diff --git a/lldb/include/lldb/Core/Module.h b/lldb/include/lldb/Core/Module.h
--- a/lldb/include/lldb/Core/Module.h
+++ b/lldb/include/lldb/Core/Module.h
@@ -825,22 +825,35 @@
   // architecture, path and object name (if any)). This centralizes code so
   // that everyone doesn't need to format their error and log messages on their
   // own and keeps the output a bit more consistent.
-  void LogMessage(Log *log, const char *format, ...)
-      __attribute__((format(printf, 3, 4)));
+  template <typename... Args>
+  void LogMessage(Log *log, const char *format, Args &&...args) {
+    LogMessage(log, llvm::formatv(format, std::forward<Args>(args)...));
+  }
 
-  void LogMessageVerboseBacktrace(Log *log, const char *format, ...)
-      __attribute__((format(printf, 3, 4)));
+  template <typename... Args>
+  void LogMessageVerboseBacktrace(Log *log, const char *format,
+                                  Args &&...args) {
+    LogMessageVerboseBacktrace(
+        log, llvm::formatv(format, std::forward<Args>(args)...));
+  }
 
-  void ReportWarning(const char *format, ...)
-      __attribute__((format(printf, 2, 3)));
+  template <typename... Args>
+  void ReportWarning(const char *format, Args &&...args) {
+    ReportWarning(llvm::formatv(format, std::forward<Args>(args)...));
+  }
 
-  void ReportError(const char *format, ...)
-      __attribute__((format(printf, 2, 3)));
+  template <typename... Args>
+  void ReportError(const char *format, Args &&...args) {
+    ReportError(llvm::formatv(format, std::forward<Args>(args)...));
+  }
 
   // Only report an error once when the module is first detected to be modified
   // so we don't spam the console with many messages.
-  void ReportErrorIfModifyDetected(const char *format, ...)
-      __attribute__((format(printf, 2, 3)));
+  template <typename... Args>
+  void ReportErrorIfModifyDetected(const char *format, Args &&...args) {
+    ReportErrorIfModifyDetected(
+        llvm::formatv(format, std::forward<Args>(args)...));
+  }
 
   void ReportWarningOptimization(std::optional<lldb::user_id_t> debugger_id);
 
@@ -1155,6 +1168,13 @@
 
   Module(const Module &) = delete;
   const Module &operator=(const Module &) = delete;
+
+  void LogMessage(Log *log, const llvm::formatv_object_base &payload);
+  void LogMessageVerboseBacktrace(Log *log,
+                                  const llvm::formatv_object_base &payload);
+  void ReportWarning(const llvm::formatv_object_base &payload);
+  void ReportError(const llvm::formatv_object_base &payload);
+  void ReportErrorIfModifyDetected(const llvm::formatv_object_base &payload);
 };
 
 } // namespace lldb_private
diff --git a/lldb/include/lldb/Utility/Status.h b/lldb/include/lldb/Utility/Status.h
--- a/lldb/include/lldb/Utility/Status.h
+++ b/lldb/include/lldb/Utility/Status.h
@@ -64,6 +64,11 @@
   explicit Status(const char *format, ...)
       __attribute__((format(printf, 2, 3)));
 
+  template <typename... Args>
+  static Status createWithFormat(const char *format, Args &&...args) {
+    return Status(llvm::formatv(format, std::forward<Args>(args)...));
+  }
+
   ~Status();
 
   // llvm::Error support
@@ -190,6 +195,11 @@
   lldb::ErrorType m_type =
       lldb::eErrorTypeInvalid;  ///< The type of the above error code.
   mutable std::string m_string; ///< A string representation of the error code.
+private:
+  explicit Status(const llvm::formatv_object_base &payload) {
+    SetErrorToGenericError();
+    m_string = payload.str();
+  }
 };
 
 } // namespace lldb_private
diff --git a/lldb/source/Core/Module.cpp b/lldb/source/Core/Module.cpp
--- a/lldb/source/Core/Module.cpp
+++ b/lldb/source/Core/Module.cpp
@@ -1150,95 +1150,60 @@
                           &m_language_warning);
 }
 
-void Module::ReportErrorIfModifyDetected(const char *format, ...) {
+void Module::ReportErrorIfModifyDetected(
+    const llvm::formatv_object_base &payload) {
   if (!m_first_file_changed_log) {
     if (FileHasChanged()) {
       m_first_file_changed_log = true;
-      if (format) {
-        StreamString strm;
-        strm.PutCString("the object file ");
-        GetDescription(strm.AsRawOstream(), lldb::eDescriptionLevelFull);
-        strm.PutCString(" has been modified\n");
-
-        va_list args;
-        va_start(args, format);
-        strm.PrintfVarArg(format, args);
-        va_end(args);
-
-        const int format_len = strlen(format);
-        if (format_len > 0) {
-          const char last_char = format[format_len - 1];
-          if (last_char != '\n' && last_char != '\r')
-            strm.EOL();
-        }
-        strm.PutCString("The debug session should be aborted as the original "
-                        "debug information has been overwritten.");
-        Debugger::ReportError(std::string(strm.GetString()));
-      }
+      StreamString strm;
+      strm.PutCString("the object file ");
+      GetDescription(strm.AsRawOstream(), lldb::eDescriptionLevelFull);
+      strm.PutCString(" has been modified\n");
+      strm.PutCString(payload.str());
+      strm.PutCString("The debug session should be aborted as the original "
+                      "debug information has been overwritten.");
+      Debugger::ReportError(std::string(strm.GetString()));
     }
   }
 }
 
-void Module::ReportError(const char *format, ...) {
-  if (format && format[0]) {
-    StreamString strm;
-    GetDescription(strm.AsRawOstream(), lldb::eDescriptionLevelBrief);
-    strm.PutChar(' ');
-
-    va_list args;
-    va_start(args, format);
-    strm.PrintfVarArg(format, args);
-    va_end(args);
-
-    Debugger::ReportError(std::string(strm.GetString()));
-  }
-}
-
-void Module::ReportWarning(const char *format, ...) {
-  if (format && format[0]) {
-    StreamString strm;
-    GetDescription(strm.AsRawOstream(), lldb::eDescriptionLevelFull);
-    strm.PutChar(' ');
-
-    va_list args;
-    va_start(args, format);
-    strm.PrintfVarArg(format, args);
-    va_end(args);
-
-    Debugger::ReportWarning(std::string(strm.GetString()));
-  }
-}
-
-void Module::LogMessage(Log *log, const char *format, ...) {
-  if (log != nullptr) {
-    StreamString log_message;
-    GetDescription(log_message.AsRawOstream(), lldb::eDescriptionLevelFull);
-    log_message.PutCString(": ");
-    va_list args;
-    va_start(args, format);
-    log_message.PrintfVarArg(format, args);
-    va_end(args);
-    log->PutCString(log_message.GetData());
-  }
-}
-
-void Module::LogMessageVerboseBacktrace(Log *log, const char *format, ...) {
-  if (log != nullptr) {
-    StreamString log_message;
-    GetDescription(log_message.AsRawOstream(), lldb::eDescriptionLevelFull);
-    log_message.PutCString(": ");
-    va_list args;
-    va_start(args, format);
-    log_message.PrintfVarArg(format, args);
-    va_end(args);
-    if (log->GetVerbose()) {
-      std::string back_trace;
-      llvm::raw_string_ostream stream(back_trace);
-      llvm::sys::PrintStackTrace(stream);
-      log_message.PutCString(back_trace);
-    }
-    log->PutCString(log_message.GetData());
+void Module::ReportError(const llvm::formatv_object_base &payload) {
+  StreamString strm;
+  GetDescription(strm.AsRawOstream(), lldb::eDescriptionLevelBrief);
+  strm.PutChar(' ');
+  strm.PutCString(payload.str());
+  Debugger::ReportError(strm.GetString().str());
+}
+
+void Module::ReportWarning(const llvm::formatv_object_base &payload) {
+  StreamString strm;
+  GetDescription(strm.AsRawOstream(), lldb::eDescriptionLevelFull);
+  strm.PutChar(' ');
+  strm.PutCString(payload.str());
+  Debugger::ReportWarning(std::string(strm.GetString()));
+}
+
+void Module::LogMessage(Log *log, const llvm::formatv_object_base &payload) {
+  StreamString log_message;
+  GetDescription(log_message.AsRawOstream(), lldb::eDescriptionLevelFull);
+  log_message.PutCString(": ");
+  log_message.PutCString(payload.str());
+  log->PutCString(log_message.GetData());
+}
+
+void Module::LogMessageVerboseBacktrace(
+    Log *log, const llvm::formatv_object_base &payload) {
+  StreamString log_message;
+  GetDescription(log_message.AsRawOstream(), lldb::eDescriptionLevelFull);
+  log_message.PutCString(": ");
+  log_message.PutCString(payload.str());
+  if (log->GetVerbose()) {
+    std::string back_trace;
+    llvm::raw_string_ostream stream(back_trace);
+    llvm::sys::PrintStackTrace(stream);
+    log_message.PutCString(back_trace);
   }
+  log->PutCString(log_message.GetData());
 }
 
 void Module::Dump(Stream *s) {
@@ -1294,7 +1259,7 @@
           // those values that overwrite unspecified unknown values.
           m_arch.MergeFrom(m_objfile_sp->GetArchitecture());
         } else {
-          ReportError("failed to load objfile for %s",
+          ReportError("failed to load objfile for {0}",
                       GetFileSpec().GetPath().c_str());
         }
       }
diff --git a/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp b/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
--- a/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
+++ b/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp
@@ -1952,7 +1952,7 @@
   auto err = lldb_private::lzma::uncompress(data.GetData(), uncompressedData);
   if (err) {
     GetModule()->ReportWarning(
-        "An error occurred while decompression the section %s: %s",
+        "An error occurred while decompression the section {0}: {1}",
         section->GetName().AsCString(), llvm::toString(std::move(err)).c_str());
     return nullptr;
   }
@@ -2615,7 +2615,7 @@
 
   for (unsigned i = 0; i < num_relocations; ++i) {
     if (!rel.Parse(rel_data, &offset)) {
-      GetModule()->ReportError(".rel%s[%d] failed to parse relocation",
+      GetModule()->ReportError(".rel{0}[{1:d}] failed to parse relocation",
                                rel_section->GetName().AsCString(), i);
       break;
     }
@@ -2643,7 +2643,7 @@
           }
           *dst = value;
         } else {
-          GetModule()->ReportError(".rel%s[%u] unknown symbol id: %d",
+          GetModule()->ReportError(".rel{0}[{1}] unknown symbol id: {2:d}",
                                    rel_section->GetName().AsCString(), i,
                                    reloc_symbol(rel));
         }
@@ -2651,7 +2651,7 @@
       case R_386_PC32:
       default:
         GetModule()->ReportError("unsupported 32-bit relocation:"
-                                 " .rel%s[%u], type %u",
+                                 " .rel{0}[{1}], type {2}",
                                  rel_section->GetName().AsCString(), i,
                                  reloc_type(rel));
       }
@@ -3396,7 +3396,7 @@
       GetByteOrder() == eByteOrderLittle, GetAddressByteSize() == 8);
   if (!Decompressor) {
     GetModule()->ReportWarning(
-        "Unable to initialize decompressor for section '%s': %s",
+        "Unable to initialize decompressor for section '{0}': {1}",
         section->GetName().GetCString(),
         llvm::toString(Decompressor.takeError()).c_str());
     section_data.Clear();
@@ -3407,10 +3407,9 @@
       std::make_shared<DataBufferHeap>(Decompressor->getDecompressedSize(), 0);
   if (auto error = Decompressor->decompress(
           {buffer_sp->GetBytes(), size_t(buffer_sp->GetByteSize())})) {
-    GetModule()->ReportWarning(
-        "Decompression of section '%s' failed: %s",
-        section->GetName().GetCString(),
-        llvm::toString(std::move(error)).c_str());
+    GetModule()->ReportWarning("Decompression of section '{0}' failed: {1}",
+                               section->GetName().GetCString(),
+                               llvm::toString(std::move(error)).c_str());
     section_data.Clear();
     return 0;
   }
diff --git a/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp b/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp
--- a/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp
+++ b/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp
@@ -1399,9 +1399,8 @@
     const char *lc_segment_name =
         seg_cmd.cmd == LC_SEGMENT_64 ? "LC_SEGMENT_64" : "LC_SEGMENT";
     GetModule()->ReportWarning(
-        "load command %u %s has a fileoff (0x%" PRIx64
-        ") that extends beyond the end of the file (0x%" PRIx64
-        "), ignoring this section",
+        "load command {0} {1} has a fileoff ({2:x16}) that extends beyond "
+        "the end of the file ({3:x16}), ignoring this section",
         cmd_idx, lc_segment_name, seg_cmd.fileoff, m_length);
 
     seg_cmd.fileoff = 0;
@@ -1418,9 +1417,9 @@
     const char *lc_segment_name =
         seg_cmd.cmd == LC_SEGMENT_64 ? "LC_SEGMENT_64" : "LC_SEGMENT";
     GetModule()->ReportWarning(
-        "load command %u %s has a fileoff + filesize (0x%" PRIx64
-        ") that extends beyond the end of the file (0x%" PRIx64
-        "), the segment will be truncated to match",
+        "load command {0} {1} has a fileoff + filesize ({2:x16}) that "
+        "extends beyond the end of the file ({4:x16}), the segment will be "
+        "truncated to match",
         cmd_idx, lc_segment_name, seg_cmd.fileoff + seg_cmd.filesize, m_length);
 
     // Truncate the length
@@ -2189,8 +2188,8 @@
   version_str[6] = '\0';
   if (strcmp(version_str, "dyld_v") == 0) {
     offset = offsetof(struct lldb_copy_dyld_cache_header_v1, uuid);
-    dsc_uuid = UUID(dsc_header_data.GetData(&offset, sizeof(uuid_t)), 
-                    sizeof(uuid_t));
+    dsc_uuid =
+        UUID(dsc_header_data.GetData(&offset, sizeof(uuid_t)), sizeof(uuid_t));
   }
   Log *log = GetLog(LLDBLog::Symbols);
   if (log && dsc_uuid.IsValid()) {
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFASTParserClang.cpp
@@ -258,8 +258,8 @@
     if (ast_importer.RequireCompleteType(qual_type))
       return;
     die.GetDWARF()->GetObjectFile()->GetModule()->ReportError(
-        "Unable to complete the Decl context for DIE '%s' at offset "
-        "0x%8.8x.\nPlease file a bug report.",
+        "Unable to complete the Decl context for DIE {0} at offset "
+        "{1:x16}.\nPlease file a bug report.",
         type_name_cstr ? type_name_cstr : "", die.GetOffset());
   }
 
@@ -429,7 +429,8 @@
     dwarf->GetObjectFile()->GetModule()->LogMessage(
         log,
         "DWARFASTParserClang::ParseTypeFromDWARF "
-        "(die = 0x%8.8x, decl_ctx = %p (die 0x%8.8x)) %s name = '%s')",
+        "(die = {0:x16}, decl_ctx = {1:p} (die "
+        "{2:16x})) (3:s) name = '{4}')",
         die.GetOffset(), static_cast<void *>(context), context_die.GetOffset(),
         die.GetTagAsCString(), die.GetName());
   }
@@ -506,7 +507,8 @@
   }
   default:
     dwarf->GetObjectFile()->GetModule()->ReportError(
-        "{0x%8.8x}: unhandled type tag 0x%4.4x (%s), please file a bug and "
+        "[{0:x16}]: unhandled type tag {1:x4} ({2}), "
+        "please file a bug and "
         "attach the file at the start of this error message",
         die.GetOffset(), tag, DW_TAG_value_to_name(tag));
     break;
@@ -675,7 +677,7 @@
           if (log)
             dwarf->GetObjectFile()->GetModule()->LogMessage(
                 log,
-                "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' "
+                "SymbolFileDWARF::ParseType (die = {0:16x}) {1} '{2}' "
                 "is Objective-C 'id' built-in type.",
                 die.GetOffset(), die.GetTagAsCString(), die.GetName());
           clang_type = m_ast.GetBasicType(eBasicTypeObjCID);
@@ -686,7 +688,7 @@
           if (log)
             dwarf->GetObjectFile()->GetModule()->LogMessage(
                 log,
-                "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' "
+                "SymbolFileDWARF::ParseType (die = {0:x16}) {1} '{2}' "
                 "is Objective-C 'Class' built-in type.",
                 die.GetOffset(), die.GetTagAsCString(), die.GetName());
           clang_type = m_ast.GetBasicType(eBasicTypeObjCClass);
@@ -697,7 +699,7 @@
           if (log)
             dwarf->GetObjectFile()->GetModule()->LogMessage(
                 log,
-                "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s '%s' "
+                "SymbolFileDWARF::ParseType (die = {0:x16}) {1} '{2}' "
                 "is Objective-C 'selector' built-in type.",
                 die.GetOffset(), die.GetTagAsCString(), die.GetName());
           clang_type = m_ast.GetBasicType(eBasicTypeObjCSel);
@@ -718,8 +720,8 @@
             if (log)
               dwarf->GetObjectFile()->GetModule()->LogMessage(
                   log,
-                  "SymbolFileDWARF::ParseType (die = 0x%8.8x) %s "
-                  "'%s' is 'objc_object*', which we overrode to "
+                  "SymbolFileDWARF::ParseType (die = {0:x16}) {1} "
+                  "'{2}' is 'objc_object*', which we overrode to "
                   "'id'.",
                   die.GetOffset(), die.GetTagAsCString(), die.GetName());
             clang_type = m_ast.GetBasicType(eBasicTypeObjCID);
@@ -800,8 +802,8 @@
       if (log) {
         dwarf->GetObjectFile()->GetModule()->LogMessage(
             log,
-            "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a "
-            "forward declaration, complete type is 0x%8.8" PRIx64,
+            "SymbolFileDWARF({0:p}) - {1:x16}}: {2} type \"{3}\" is a "
+            "forward declaration, complete type is {4:x8}",
             static_cast<void *>(this), die.GetOffset(),
             DW_TAG_value_to_name(tag), attrs.name.GetCString(),
             type_sp->GetID());
@@ -870,7 +872,7 @@
     TypeSystemClang::CompleteTagDeclarationDefinition(clang_type);
   } else {
     dwarf->GetObjectFile()->GetModule()->ReportError(
-        "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its "
+        "DWARF DIE at {0:x16} named \"{1}\" was not able to start its "
         "definition.\nPlease file a bug and attach the file at the "
         "start of this error message",
         die.GetOffset(), attrs.name.GetCString());
@@ -1033,7 +1035,7 @@
             m_ast.SetMetadataAsUserID(objc_method_decl, die.GetID());
           } else {
             dwarf->GetObjectFile()->GetModule()->ReportError(
-                "{0x%8.8x}: invalid Objective-C method 0x%4.4x (%s), "
+                "[{0:x16}]: invalid Objective-C method {1:x4} ({2}), "
                 "please file a bug and attach the file at the start of "
                 "this error message",
                 die.GetOffset(), tag, DW_TAG_value_to_name(tag));
@@ -1086,7 +1088,7 @@
               LinkDeclContextToDIE(spec_clang_decl_ctx, die);
             } else {
               dwarf->GetObjectFile()->GetModule()->ReportWarning(
-                  "0x%8.8" PRIx64 ": DW_AT_specification(0x%8.8x"
+                  "{0:x8}: DW_AT_specification({1:x16}"
                   ") has no decl\n",
                   die.GetID(), spec_die.GetOffset());
             }
@@ -1105,7 +1107,7 @@
               LinkDeclContextToDIE(abs_clang_decl_ctx, die);
             } else {
               dwarf->GetObjectFile()->GetModule()->ReportWarning(
-                  "0x%8.8" PRIx64 ": DW_AT_abstract_origin(0x%8.8x"
+                  "{0:x8}: DW_AT_abstract_origin({1:x16}"
                   ") has no decl\n",
                   die.GetID(), abs_die.GetOffset());
             }
@@ -1457,9 +1459,9 @@
 
   Type *base_class_type = die.ResolveTypeUID(encoding_form.Reference());
   if (base_class_type == nullptr) {
-    module_sp->ReportError("0x%8.8x: DW_TAG_inheritance failed to "
-                           "resolve the base class at 0x%8.8x"
-                           " from enclosing type 0x%8.8x. \nPlease file "
+    module_sp->ReportError("{0:x16}: DW_TAG_inheritance failed to "
+                           "resolve the base class at {1:x16}"
+                           " from enclosing type {2:x16}. \nPlease file "
                            "a bug and attach the file at the start of "
                            "this error message",
                            die.GetOffset(),
@@ -1689,8 +1691,9 @@
         if (log) {
           dwarf->GetObjectFile()->GetModule()->LogMessage(
               log,
-              "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is an "
-              "incomplete objc type, complete type is 0x%8.8" PRIx64,
+              "SymbolFileDWARF({0:p}) - {1:x16}: {2} type "
+              "\"{3}\" is an "
+              "incomplete objc type, complete type is {4:x8}",
               static_cast<void *>(this), die.GetOffset(),
               DW_TAG_value_to_name(tag), attrs.name.GetCString(),
               type_sp->GetID());
@@ -1714,7 +1717,7 @@
     if (log) {
       dwarf->GetObjectFile()->GetModule()->LogMessage(
           log,
-          "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a "
+          "SymbolFileDWARF({0:p}) - {1:x16}: {2} type \"{3}\" is a "
           "forward declaration, trying to find complete type",
           static_cast<void *>(this), die.GetOffset(), DW_TAG_value_to_name(tag),
           attrs.name.GetCString());
@@ -1743,8 +1746,8 @@
       if (log) {
         dwarf->GetObjectFile()->GetModule()->LogMessage(
             log,
-            "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" is a "
-            "forward declaration, complete type is 0x%8.8" PRIx64,
+            "SymbolFileDWARF({0:p}) - {1:x16}: {2} type \"{3}\" is a "
+            "forward declaration, complete type is {4:x8}",
             static_cast<void *>(this), die.GetOffset(),
             DW_TAG_value_to_name(tag), attrs.name.GetCString(),
             type_sp->GetID());
@@ -1795,7 +1798,7 @@
         if (log) {
           dwarf->GetObjectFile()->GetModule()->LogMessage(
               log,
-              "SymbolFileDWARF(%p) - 0x%8.8x: %s type \"%s\" "
+              "SymbolFileDWARF({0:p}) - {1:x16}: {2} type \"{3}\" "
               "clang::ClassTemplateDecl failed to return a decl.",
               static_cast<void *>(this), die.GetOffset(),
               DW_TAG_value_to_name(tag), attrs.name.GetCString());
@@ -1855,7 +1858,9 @@
         TypeSystemClang::CompleteTagDeclarationDefinition(clang_type);
       } else {
         dwarf->GetObjectFile()->GetModule()->ReportError(
-            "DWARF DIE at 0x%8.8x named \"%s\" was not able to start its "
+
+            "DWARF DIE at {0:x16} named \"{1}\" was not able to start "
+            "its "
             "definition.\nPlease file a bug and attach the file at the "
             "start of this error message",
             die.GetOffset(), attrs.name.GetCString());
@@ -2660,18 +2665,18 @@
   const PropertyAttributes propAttrs(die);
 
   if (!propAttrs.prop_name) {
-    module_sp->ReportError(
-        "0x%8.8" PRIx64 ": DW_TAG_APPLE_property has no name.", die.GetID());
+    module_sp->ReportError("{0:x8}: DW_TAG_APPLE_property has no name.",
+                           die.GetID());
     return;
   }
 
   Type *member_type = die.ResolveTypeUID(attrs.encoding_form.Reference());
   if (!member_type) {
-    module_sp->ReportError("0x%8.8" PRIx64
-                           ": DW_TAG_APPLE_property '%s' refers to type 0x%8.8x"
-                           " which was unable to be parsed",
-                           die.GetID(), propAttrs.prop_name,
-                           attrs.encoding_form.Reference().GetOffset());
+    module_sp->ReportError(
+        "{0:x8}: DW_TAG_APPLE_property '{1}' refers to type {2:x16}"
+        " which was unable to be parsed",
+        die.GetID(), propAttrs.prop_name,
+        attrs.encoding_form.Reference().GetOffset());
     return;
   }
 
@@ -2807,14 +2812,14 @@
   if (!member_type) {
     if (attrs.name)
       module_sp->ReportError(
-          "0x%8.8" PRIx64 ": DW_TAG_member '%s' refers to type 0x%8.8x"
+          "{0:x8}: DW_TAG_member '{1}' refers to type {2:x16}"
           " which was unable to be parsed",
           die.GetID(), attrs.name, attrs.encoding_form.Reference().GetOffset());
     else
-      module_sp->ReportError(
-          "0x%8.8" PRIx64 ": DW_TAG_member refers to type 0x%8.8x"
-          " which was unable to be parsed",
-          die.GetID(), attrs.encoding_form.Reference().GetOffset());
+      module_sp->ReportError("{0:x8}: DW_TAG_member refers to type {1:x16}"
+                             " which was unable to be parsed",
+                             die.GetID(),
+                             attrs.encoding_form.Reference().GetOffset());
     return;
   }
 
@@ -2864,10 +2869,10 @@
               this_field_info.bit_offset)))) {
       ObjectFile *objfile = die.GetDWARF()->GetObjectFile();
       objfile->GetModule()->ReportWarning(
-          "0x%8.8" PRIx64 ": %s bitfield named \"%s\" has invalid "
-          "bit offset (0x%8.8" PRIx64
-          ") member will be ignored. Please file a bug against the "
-          "compiler and include the preprocessed output for %s\n",
+          "{0:x16}: {1} bitfield named \"{2}\" has invalid "
+          "bit offset ({3:x8}) member will be ignored. Please file a bug "
+          "against the "
+          "compiler and include the preprocessed output for {4}\n",
           die.GetID(), DW_TAG_value_to_name(tag), attrs.name,
           this_field_info.bit_offset, GetUnitName(parent_die).c_str());
       return;
@@ -2983,11 +2988,10 @@
             (member_array_size != 0 ||
              attrs.member_byte_offset > parent_byte_size)) {
           module_sp->ReportError(
-              "0x%8.8" PRIx64 ": DW_TAG_member '%s' refers to type 0x%8.8x"
-              " which extends beyond the bounds of 0x%8.8" PRIx64,
+              "{0:x8}: DW_TAG_member '{1}' refers to type {2:x16}"
+              " which extends beyond the bounds of {3:x8}",
               die.GetID(), attrs.name,
-              attrs.encoding_form.Reference().GetOffset(),
-              parent_die.GetID());
+              attrs.encoding_form.Reference().GetOffset(), parent_die.GetID());
         }
 
         member_clang_type =
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFCompileUnit.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFCompileUnit.cpp
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFCompileUnit.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFCompileUnit.cpp
@@ -18,11 +18,13 @@
 using namespace lldb_private;
 
 void DWARFCompileUnit::Dump(Stream *s) const {
-  s->Printf("0x%8.8x: Compile Unit: length = 0x%8.8x, version = 0x%4.4x, "
-            "abbr_offset = 0x%8.8x, addr_size = 0x%2.2x (next CU at "
-            "{0x%8.8x})\n",
-            GetOffset(), GetLength(), GetVersion(), GetAbbrevOffset(),
-            GetAddressByteSize(), GetNextUnitOffset());
+  s->Format(
+
+      "{0:x16}: Compile Unit: length = {1:x8}, version = {2:x}, "
+      "abbr_offset = {3:x8}, addr_size = {4:x2} (next CU at "
+      "[{5:x16}])\n",
+      GetOffset(), GetLength(), GetVersion(), (uint32_t)GetAbbrevOffset(),
+      GetAddressByteSize(), GetNextUnitOffset());
 }
 
 void DWARFCompileUnit::BuildAddressRangeTable(
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfoEntry.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfoEntry.cpp
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfoEntry.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugInfoEntry.cpp
@@ -61,7 +61,8 @@
   const auto *abbrevDecl = GetAbbreviationDeclarationPtr(cu);
   if (abbrevDecl == nullptr) {
     cu->GetSymbolFileDWARF().GetObjectFile()->GetModule()->ReportError(
-        "{0x%8.8x}: invalid abbreviation code %u, please file a bug and "
+        "[{0:x16}]: invalid abbreviation code {1}, "
+        "please file a bug and "
         "attach the file at the start of this error message",
         m_offset, (unsigned)abbr_idx);
     // WE can't parse anymore if the DWARF is borked...
@@ -191,7 +192,8 @@
 
         default:
           cu->GetSymbolFileDWARF().GetObjectFile()->GetModule()->ReportError(
-              "{0x%8.8x}: Unsupported DW_FORM_0x%x, please file a bug and "
+              "[{0:x16}]: Unsupported DW_FORM_{1:x}, please file a bug "
+              "and "
               "attach the file at the start of this error message",
               m_offset, (unsigned)form);
           *offset_ptr = m_offset;
@@ -215,9 +217,10 @@
           : unit.FindRnglistFromOffset(value.Unsigned());
   if (expected_ranges)
     return std::move(*expected_ranges);
+
   unit.GetSymbolFileDWARF().GetObjectFile()->GetModule()->ReportError(
-      "{0x%8.8x}: DIE has DW_AT_ranges(%s 0x%" PRIx64 ") attribute, but "
-      "range extraction failed (%s), please file a bug "
+      "[{0:x16}]: DIE has DW_AT_ranges({1} {2:x16}) attribute, but "
+      "range extraction failed ({3}), please file a bug "
       "and attach the file at the start of this error message",
       die.GetOffset(),
       llvm::dwarf::FormEncodingString(value.Form()).str().c_str(),
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFFormValue.cpp
@@ -513,8 +513,7 @@
     value += m_unit->GetOffset();
     if (!m_unit->ContainsDIEOffset(value)) {
       m_unit->GetSymbolFileDWARF().GetObjectFile()->GetModule()->ReportError(
-          "DW_FORM_ref* DIE reference 0x%" PRIx64 " is outside of its CU",
-          value);
+          "DW_FORM_ref* DIE reference {0:x16} is outside of its CU", value);
       return {};
     }
     return const_cast<DWARFUnit *>(m_unit)->GetDIE(value);
@@ -525,8 +524,7 @@
             DIERef::Section::DebugInfo, value);
     if (!ref_cu) {
       m_unit->GetSymbolFileDWARF().GetObjectFile()->GetModule()->ReportError(
-          "DW_FORM_ref_addr DIE reference 0x%" PRIx64 " has no matching CU",
-          value);
+          "DW_FORM_ref_addr DIE reference {0:x16} has no matching CU", value);
       return {};
     }
     return ref_cu->GetDIE(value);
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFIndex.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFIndex.cpp
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFIndex.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFIndex.cpp
@@ -102,6 +102,6 @@
 void DWARFIndex::ReportInvalidDIERef(DIERef ref, llvm::StringRef name) const {
   m_module.ReportErrorIfModifyDetected(
       "the DWARF debug information has been modified (accelerator table had "
-      "bad die 0x%8.8x for '%s')\n",
+      "bad die {0:x16} for '{1}')\n",
       ref.die_offset(), name.str().c_str());
 }
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFTypeUnit.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFTypeUnit.cpp
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFTypeUnit.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFTypeUnit.cpp
@@ -15,9 +15,10 @@
 using namespace lldb_private;
 
 void DWARFTypeUnit::Dump(Stream *s) const {
-  s->Printf("0x%8.8x: Type Unit: length = 0x%8.8x, version = 0x%4.4x, "
-            "abbr_offset = 0x%8.8x, addr_size = 0x%2.2x (next CU at "
-            "{0x%8.8x})\n",
-            GetOffset(), GetLength(), GetVersion(), GetAbbrevOffset(),
-            GetAddressByteSize(), GetNextUnitOffset());
+  s->Format("{0:x16}: Type Unit: length = {1:x8}, version = {2:x4}, "
+            "abbr_offset = {3:x8}, addr_size = {4:x2} (next CU at "
+            "[{5:x16}])\n",
+            GetOffset(), (uint32_t)GetLength(), GetVersion(),
+            (uint32_t)GetAbbrevOffset(), GetAddressByteSize(),
+            GetNextUnitOffset());
 }
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp b/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp
--- a/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/DWARFUnit.cpp
@@ -88,11 +88,11 @@
   DWARFUnit *dwo_cu = dwo_symbol_file->GetDWOCompileUnitForHash(*m_dwo_id);
 
   if (!dwo_cu) {
-    SetDwoError(
-        Status("unable to load .dwo file from \"%s\" due to ID (0x%16.16" PRIx64
-               ") mismatch for skeleton DIE at 0x%8.8" PRIx32,
-               dwo_symbol_file->GetObjectFile()->GetFileSpec().GetPath().c_str(),
-               *m_dwo_id, m_first_die.GetOffset()));
+    SetDwoError(Status::createWithFormat(
+        "unable to load .dwo file from \"{0}\" due to ID ({1:x16}) mismatch "
+        "for skeleton DIE at {2:x8}",
+        dwo_symbol_file->GetObjectFile()->GetFileSpec().GetPath().c_str(),
+        *m_dwo_id, m_first_die.GetOffset()));
     return; // Can't fetch the compile unit from the dwo file.
   }
   dwo_cu->SetUserData(this);
@@ -100,9 +100,10 @@
   DWARFBaseDIE dwo_cu_die = dwo_cu->GetUnitDIEOnly();
   if (!dwo_cu_die.IsValid()) {
     // Can't fetch the compile unit DIE from the dwo file.
-    SetDwoError(
-        Status("unable to extract compile unit DIE from .dwo file for skeleton "
-               "DIE at 0x%8.8" PRIx32, m_first_die.GetOffset()));
+    SetDwoError(Status::createWithFormat(
+        "unable to extract compile unit DIE from .dwo file for skeleton "
+        "DIE at {0:x16}",
+        m_first_die.GetOffset()));
     return;
   }
 
@@ -213,7 +214,11 @@
   llvm::sys::ScopedWriter first_die_lock(m_first_die_mutex);
 
   ElapsedTime elapsed(m_dwarf.GetDebugInfoParseTimeRef());
-  LLDB_SCOPED_TIMERF("%8.8x: DWARFUnit::ExtractDIEsIfNeeded()", GetOffset());
+  LLDB_SCOPED_TIMERF(
+      "%s",
+      llvm::formatv("{0:x16}: DWARFUnit::ExtractDIEsIfNeeded()", GetOffset())
+          .str()
+          .c_str());
 
   // Set the offset to that of the first DIE and calculate the start of the
   // next compilation unit header.
@@ -480,7 +485,7 @@
     if (!contribution) {
       GetSymbolFileDWARF().GetObjectFile()->GetModule()->ReportError(
           "Failed to find location list contribution for CU with DWO Id "
-          "0x%" PRIx64,
+          "{0:x16}",
           *GetDWOId());
       return;
     }
@@ -498,8 +503,8 @@
           m_dwarf.GetDWARFContext().getOrLoadLocListsData().GetAsLLVM(),
           &offset)) {
     GetSymbolFileDWARF().GetObjectFile()->GetModule()->ReportError(
-        "Failed to extract location list table at offset 0x%" PRIx64
-        " (location list base: 0x%" PRIx64 "): %s",
+        "Failed to extract location list table at offset {0:x16} (location "
+        "list base: {1:x16}): {2}",
         offset, loclists_base, toString(std::move(E)).c_str());
   }
 }
@@ -538,8 +543,7 @@
       return DWARFDataExtractor(data, contribution->Offset,
                                 contribution->Length);
     GetSymbolFileDWARF().GetObjectFile()->GetModule()->ReportError(
-        "Failed to find range list contribution for CU with signature "
-        "0x%" PRIx64,
+        "Failed to find range list contribution for CU with signature {0:x16}",
         entry->getSignature());
 
     return DWARFDataExtractor();
@@ -563,7 +567,7 @@
       m_rnglist_table = std::move(table_or_error.get());
     else
       GetSymbolFileDWARF().GetObjectFile()->GetModule()->ReportError(
-          "Failed to extract range list table at offset 0x%" PRIx64 ": %s",
+          "Failed to extract range list table at offset {0:x16}: {1}",
           m_ranges_base, toString(table_or_error.takeError()).c_str());
   }
   return m_rnglist_table;
@@ -575,10 +579,13 @@
     return llvm::createStringError(std::errc::invalid_argument,
                                    "missing or invalid range list table");
   if (!m_ranges_base)
-    return llvm::createStringError(std::errc::invalid_argument,
-                                   "DW_FORM_rnglistx cannot be used without "
-                                   "DW_AT_rnglists_base for CU at 0x%8.8x",
-                                   GetOffset());
+    return llvm::createStringError(
+        std::errc::invalid_argument,
+        llvm::formatv("DW_FORM_rnglistx cannot be used without "
+                      "DW_AT_rnglists_base for CU at {0:x16}",
+                      GetOffset())
+            .str()
+            .c_str());
   if (std::optional<uint64_t> off = GetRnglistTable()->getOffsetEntry(
           GetRnglistData().GetAsLLVM(), Index))
     return *off + m_ranges_base;
@@ -637,8 +644,8 @@
 
   if (!ContainsDIEOffset(die_offset)) {
     GetSymbolFileDWARF().GetObjectFile()->GetModule()->ReportError(
-        "GetDIE for DIE 0x%" PRIx32 " is outside of its CU 0x%" PRIx32,
-        die_offset, GetOffset());
+        "GetDIE for DIE {0:x16} is outside of its CU {0:x16}", die_offset,
+        GetOffset());
     return DWARFDIE(); // Not found
   }
 
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/ManualDWARFIndex.cpp b/lldb/source/Plugins/SymbolFile/DWARF/ManualDWARFIndex.cpp
--- a/lldb/source/Plugins/SymbolFile/DWARF/ManualDWARFIndex.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/ManualDWARFIndex.cpp
@@ -143,7 +143,7 @@
 
   if (log) {
     m_module.LogMessage(
-        log, "ManualDWARFIndex::IndexUnit for unit at .debug_info[0x%8.8x]",
+        log, "ManualDWARFIndex::IndexUnit for unit at .debug_info[{0:x16}]",
         unit.GetOffset());
   }
 
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
--- a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARF.cpp
@@ -556,7 +556,7 @@
           for (auto form : invalid_forms)
             error.Printf(" %#x", form);
           m_objfile_sp->GetModule()->ReportWarning(
-              "%s", error.GetString().str().c_str());
+              "{0}", error.GetString().str().c_str());
           return 0;
         }
       }
@@ -1314,9 +1314,9 @@
                                          range.GetByteSize()));
           else {
             GetObjectFile()->GetModule()->ReportError(
-                "0x%8.8" PRIx64 ": adding range [0x%" PRIx64 "-0x%" PRIx64
-                ") which has a base that is less than the function's low PC "
-                "0x%" PRIx64 ". Please file a bug and attach the file at the "
+                "{0x:+8}: adding range [{1:x16}-{2:x16}) which has a base "
+                "that is less than the function's low PC {3:x16}. Please file "
+                "a bug and attach the file at the "
                 "start of this error message",
                 block->GetID(), range_base, range.GetRangeEnd(),
                 subprogram_low_pc);
@@ -1519,7 +1519,7 @@
     Log *log = GetLog(DWARFLog::DebugInfo);
     if (log)
       GetObjectFile()->GetModule()->LogMessage(
-          log, "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s'",
+          log, "SymbolFileDWARF::ResolveTypeUID (die = {0:x16}) {1} '{2}'",
           die.GetOffset(), die.GetTagAsCString(), die.GetName());
 
     // We might be coming in in the middle of a type tree (a class within a
@@ -1536,8 +1536,9 @@
           if (log)
             GetObjectFile()->GetModule()->LogMessage(
                 log,
-                "SymbolFileDWARF::ResolveTypeUID (die = 0x%8.8x) %s '%s' "
-                "resolve parent forward type for 0x%8.8x",
+                "SymbolFileDWARF::ResolveTypeUID (die = {0:x16}) "
+                "{1} '{2}' "
+                "resolve parent forward type for {3:x16})",
                 die.GetOffset(), die.GetTagAsCString(), die.GetName(),
                 decl_ctx_die.GetOffset());
         } break;
@@ -1607,7 +1608,7 @@
     Log *log = GetLog(DWARFLog::DebugInfo | DWARFLog::TypeCompletion);
     if (log)
       GetObjectFile()->GetModule()->LogMessageVerboseBacktrace(
-          log, "0x%8.8" PRIx64 ": %s '%s' resolving forward declaration...",
+          log, "{0:x8}: {1} '{2}' resolving forward declaration...",
           dwarf_die.GetID(), dwarf_die.GetTagAsCString(),
           type->GetName().AsCString());
     assert(compiler_type);
@@ -1628,7 +1629,7 @@
         return type;
 
       GetObjectFile()->GetModule()->ReportError(
-          "Parsing a die that is being parsed die: 0x%8.8x: %s %s",
+          "Parsing a die that is being parsed die: {0:x16}: {1} {2}",
           die.GetOffset(), die.GetTagAsCString(), die.GetName());
 
     } else
@@ -1743,8 +1744,8 @@
 
   const char *dwo_name = GetDWOName(*dwarf_cu, cu_die);
   if (!dwo_name) {
-    unit.SetDwoError(Status("missing DWO name in skeleton DIE 0x%8.8" PRIx32,
-                            cu_die.GetOffset()));
+    unit.SetDwoError(Status::createWithFormat(
+        "missing DWO name in skeleton DIE {0:x16}", cu_die.GetOffset()));
     return nullptr;
   }
 
@@ -1758,10 +1759,11 @@
     comp_dir = cu_die.GetAttributeValueAsString(dwarf_cu, DW_AT_comp_dir,
                                                 nullptr);
     if (!comp_dir) {
-      unit.SetDwoError(
-          Status("unable to locate relative .dwo debug file \"%s\" for "
-                 "skeleton DIE 0x%8.8" PRIx32 " without valid DW_AT_comp_dir "
-                 "attribute", dwo_name, cu_die.GetOffset()));
+      unit.SetDwoError(Status::createWithFormat(
+          "unable to locate relative .dwo debug file \"{0}\" for "
+          "skeleton DIE {1:x16} without valid DW_AT_comp_dir "
+          "attribute",
+          dwo_name, cu_die.GetOffset()));
       return nullptr;
     }
 
@@ -1778,10 +1780,10 @@
   }
 
   if (!FileSystem::Instance().Exists(dwo_file)) {
-    unit.SetDwoError(
-        Status("unable to locate .dwo debug file \"%s\" for skeleton DIE "
-               "0x%8.8" PRIx32, dwo_file.GetPath().c_str(),
-               cu_die.GetOffset()));
+    unit.SetDwoError(Status::createWithFormat(
+        "unable to locate .dwo debug file \"{0}\" for skeleton DIE "
+        "{1:x16}",
+        dwo_file.GetPath().c_str(), cu_die.GetOffset()));
 
     if (m_dwo_warning_issued.test_and_set(std::memory_order_relaxed) == false) {
       GetObjectFile()->GetModule()->ReportWarning(
@@ -1799,9 +1801,10 @@
       FileSystem::Instance().GetByteSize(dwo_file), dwo_file_data_sp,
       dwo_file_data_offset);
   if (dwo_obj_file == nullptr) {
-    unit.SetDwoError(
-          Status("unable to load object file for .dwo debug file \"%s\" for "
-                 "unit DIE 0x%8.8" PRIx32, dwo_name, cu_die.GetOffset()));
+    unit.SetDwoError(Status::createWithFormat(
+        "unable to load object file for .dwo debug file \"{0}\" for "
+        "unit DIE {1:x16}",
+        dwo_name, cu_die.GetOffset()));
     return nullptr;
   }
 
@@ -1877,8 +1880,8 @@
                                                nullptr, nullptr, nullptr);
     if (!module_sp) {
       GetObjectFile()->GetModule()->ReportWarning(
-          "0x%8.8x: unable to locate module needed for external types: "
-          "%s\nerror: %s\nDebugging will be degraded due to missing "
+          "{0:x16}: unable to locate module needed for external types: "
+          "{1}\nerror: {2}\nDebugging will be degraded due to missing "
           "types. Rebuilding the project will regenerate the needed "
           "module files.",
           die.GetOffset(), dwo_module_spec.GetFileSpec().GetPath().c_str(),
@@ -1902,7 +1905,8 @@
 
     if (dwo_id != dwo_dwo_id) {
       GetObjectFile()->GetModule()->ReportWarning(
-          "0x%8.8x: Module %s is out-of-date (hash mismatch). Type information "
+          "{0:x16}: Module {1} is out-of-date (hash mismatch). Type "
+          "information "
           "from this module may be incomplete or inconsistent with the rest of "
           "the program. Rebuilding the project will regenerate the needed "
           "module files.",
@@ -2082,7 +2086,7 @@
           }
         } else {
           GetObjectFile()->GetModule()->ReportWarning(
-              "0x%8.8x: compile unit %u failed to create a valid "
+              "{0:x16}: compile unit {1} failed to create a valid "
               "lldb_private::CompileUnit class.",
               cu_offset, cu_idx);
         }
@@ -2176,8 +2180,8 @@
   if (log)
     GetObjectFile()->GetModule()->LogMessage(
         log,
-        "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", "
-        "parent_decl_ctx=%p, max_matches=%u, variables)",
+        "SymbolFileDWARF::FindGlobalVariables (name=\"{0}\", "
+        "parent_decl_ctx={1:p}, max_matches={2}, variables)",
         name.GetCString(), static_cast<const void *>(&parent_decl_ctx),
         max_matches);
 
@@ -2242,8 +2246,8 @@
   if (log && num_matches > 0) {
     GetObjectFile()->GetModule()->LogMessage(
         log,
-        "SymbolFileDWARF::FindGlobalVariables (name=\"%s\", "
-        "parent_decl_ctx=%p, max_matches=%u, variables) => %u",
+        "SymbolFileDWARF::FindGlobalVariables (name=\"{0}\", "
+        "parent_decl_ctx={1:p}, max_matches={2}, variables) => {3}",
         name.GetCString(), static_cast<const void *>(&parent_decl_ctx),
         max_matches, num_matches);
   }
@@ -2258,8 +2262,8 @@
   if (log) {
     GetObjectFile()->GetModule()->LogMessage(
         log,
-        "SymbolFileDWARF::FindGlobalVariables (regex=\"%s\", "
-        "max_matches=%u, variables)",
+        "SymbolFileDWARF::FindGlobalVariables (regex=\"{0}\", "
+        "max_matches={1}, variables)",
         regex.GetText().str().c_str(), max_matches);
   }
 
@@ -2369,7 +2373,7 @@
   if (log) {
     GetObjectFile()->GetModule()->LogMessage(
         log,
-        "SymbolFileDWARF::FindFunctions (name=\"%s\", name_type_mask=0x%x, "
+        "SymbolFileDWARF::FindFunctions (name=\"{0}\", name_type_mask={1:x}, "
         "sc_list)",
         name.GetCString(), name_type_mask);
   }
@@ -2418,8 +2422,8 @@
   if (log && num_matches > 0) {
     GetObjectFile()->GetModule()->LogMessage(
         log,
-        "SymbolFileDWARF::FindFunctions (name=\"%s\", "
-        "name_type_mask=0x%x, include_inlines=%d, sc_list) => %u",
+        "SymbolFileDWARF::FindFunctions (name=\"{0}\", "
+        "name_type_mask={1:x}, include_inlines={2:d}, sc_list) => {3}",
         name.GetCString(), name_type_mask, include_inlines, num_matches);
   }
 }
@@ -2435,7 +2439,7 @@
 
   if (log) {
     GetObjectFile()->GetModule()->LogMessage(
-        log, "SymbolFileDWARF::FindFunctions (regex=\"%s\", sc_list)",
+        log, "SymbolFileDWARF::FindFunctions (regex=\"{0}\", sc_list)",
         regex.GetText().str().c_str());
   }
 
@@ -2485,15 +2489,15 @@
     if (parent_decl_ctx)
       GetObjectFile()->GetModule()->LogMessage(
           log,
-          "SymbolFileDWARF::FindTypes (sc, name=\"%s\", parent_decl_ctx = "
-          "%p (\"%s\"), max_matches=%u, type_list)",
+          "SymbolFileDWARF::FindTypes (sc, name=\"{0}\", parent_decl_ctx = "
+          "{1:p} (\"{2}\"), max_matches={3}, type_list)",
           name.GetCString(), static_cast<const void *>(&parent_decl_ctx),
           parent_decl_ctx.GetName().AsCString("<NULL>"), max_matches);
     else
       GetObjectFile()->GetModule()->LogMessage(
           log,
-          "SymbolFileDWARF::FindTypes (sc, name=\"%s\", parent_decl_ctx = "
-          "NULL, max_matches=%u, type_list)",
+          "SymbolFileDWARF::FindTypes (sc, name=\"{0}\", parent_decl_ctx = "
+          "NULL, max_matches={1}, type_list)",
           name.GetCString(), max_matches);
   }
 
@@ -2582,16 +2586,16 @@
     if (parent_decl_ctx) {
       GetObjectFile()->GetModule()->LogMessage(
           log,
-          "SymbolFileDWARF::FindTypes (sc, name=\"%s\", parent_decl_ctx "
-          "= %p (\"%s\"), max_matches=%u, type_list) => %u",
+          "SymbolFileDWARF::FindTypes (sc, name=\"{0}\", parent_decl_ctx "
+          "= {1:p} (\"{2}\"), max_matches={3}, type_list) => {4}",
           name.GetCString(), static_cast<const void *>(&parent_decl_ctx),
           parent_decl_ctx.GetName().AsCString("<NULL>"), max_matches,
           types.GetSize());
     } else {
       GetObjectFile()->GetModule()->LogMessage(
           log,
-          "SymbolFileDWARF::FindTypes (sc, name=\"%s\", parent_decl_ctx "
-          "= NULL, max_matches=%u, type_list) => %u",
+          "SymbolFileDWARF::FindTypes (sc, name=\"{0}\", parent_decl_ctx "
+          "= NULL, max_matches={1}, type_list) => {2}",
           name.GetCString(), max_matches, types.GetSize());
     }
   }
@@ -2649,7 +2653,7 @@
 
   if (log) {
     GetObjectFile()->GetModule()->LogMessage(
-        log, "SymbolFileDWARF::FindNamespace (sc, name=\"%s\")",
+        log, "SymbolFileDWARF::FindNamespace (sc, name=\"{0}\")",
         name.GetCString());
   }
 
@@ -2673,8 +2677,8 @@
   if (log && namespace_decl_ctx) {
     GetObjectFile()->GetModule()->LogMessage(
         log,
-        "SymbolFileDWARF::FindNamespace (sc, name=\"%s\") => "
-        "CompilerDeclContext(%p/%p) \"%s\"",
+        "SymbolFileDWARF::FindNamespace (sc, name=\"{0}\") => "
+        "CompilerDeclContext({1:p}/{2:p}) \"{3}\"",
         name.GetCString(),
         static_cast<const void *>(namespace_decl_ctx.GetTypeSystem()),
         static_cast<const void *>(namespace_decl_ctx.GetOpaqueDeclContext()),
@@ -2969,7 +2973,7 @@
       GetObjectFile()->GetModule()->LogMessage(
           log,
           "SymbolFileDWARF::FindDefinitionTypeForDWARFDeclContext(tag=%"
-          "s, name='%s')",
+          "s, name='{0}')",
           DW_TAG_value_to_name(tag), die.GetName());
     }
 
@@ -3041,8 +3045,8 @@
           GetObjectFile()->GetModule()->LogMessage(
               log,
               "SymbolFileDWARF::"
-              "FindDefinitionTypeForDWARFDeclContext(tag=%s, "
-              "name='%s') ignoring die=0x%8.8x (%s)",
+              "FindDefinitionTypeForDWARFDeclContext(tag={0}, "
+              "name='{1}') ignoring die={2:x16} ({3})",
               DW_TAG_value_to_name(tag), die.GetName(), type_die.GetOffset(),
               type_die.GetName());
         }
@@ -3055,8 +3059,8 @@
         GetObjectFile()->GetModule()->LogMessage(
             log,
             "SymbolFileDWARF::"
-            "FindDefinitionTypeForDWARFDeclContext(tag=%s, "
-            "name='%s') trying die=0x%8.8x (%s)",
+            "FindDefinitionTypeForDWARFDeclContext(tag={0}, "
+            "name='{1}') trying die={2:x16} ({3})",
             DW_TAG_value_to_name(tag), die.GetName(), type_die.GetOffset(),
             type_dwarf_decl_ctx.GetQualifiedName());
       }
@@ -3472,7 +3476,7 @@
         StreamString strm;
         location->DumpLocation(&strm, eDescriptionLevelFull, nullptr);
         GetObjectFile()->GetModule()->ReportError(
-            "0x%8.8x: %s has an invalid location: %s", die.GetOffset(),
+            "{0:x16}: {1} has an invalid location: {2}", die.GetOffset(),
             die.GetTagAsCString(), strm.GetData());
       }
       if (location_DW_OP_addr != LLDB_INVALID_ADDRESS)
@@ -3693,8 +3697,8 @@
       variable_list_sp = sc.comp_unit->GetVariableList(false);
     } else {
       GetObjectFile()->GetModule()->ReportError(
-          "parent 0x%8.8" PRIx64 " %s with no valid compile unit in "
-          "symbol context for 0x%8.8" PRIx64 " %s.\n",
+          "parent {0:x8} {1} with no valid compile unit in "
+          "symbol context for {2:x8} {3}.\n",
           sc_parent_die.GetID(), sc_parent_die.GetTagAsCString(), die.GetID(),
           die.GetTagAsCString());
       return;
@@ -3703,8 +3707,8 @@
 
   default:
     GetObjectFile()->GetModule()->ReportError(
-        "didn't find appropriate parent DIE for variable list for "
-        "0x%8.8" PRIx64 " %s.\n",
+        "didn't find appropriate parent DIE for variable list for {0:x8} "
+        "{1}.\n",
         die.GetID(), die.GetTagAsCString());
     return;
   }
diff --git a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.cpp b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.cpp
--- a/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.cpp
+++ b/lldb/source/Plugins/SymbolFile/DWARF/SymbolFileDWARFDebugMap.cpp
@@ -352,7 +352,8 @@
           // "i"
           if (sibling_idx == UINT32_MAX) {
             m_objfile_sp->GetModule()->ReportError(
-                "N_SO in symbol with UID %u has invalid sibling in debug map, "
+                "N_SO in symbol with UID {0} has invalid sibling in debug "
+                "map, "
                 "please file a bug and attach the binary listed in this error",
                 so_symbol->GetID());
           } else {
@@ -368,22 +369,25 @@
         } else {
           if (oso_symbol == nullptr)
             m_objfile_sp->GetModule()->ReportError(
-                "N_OSO symbol[%u] can't be found, please file a bug and attach "
+                "N_OSO symbol[{0}] can't be found, please file a bug and "
+                "attach "
                 "the binary listed in this error",
                 oso_idx);
           else if (so_symbol == nullptr)
             m_objfile_sp->GetModule()->ReportError(
-                "N_SO not found for N_OSO symbol[%u], please file a bug and "
+                "N_SO not found for N_OSO symbol[{0}], please file a bug and "
                 "attach the binary listed in this error",
                 oso_idx);
           else if (so_symbol->GetType() != eSymbolTypeSourceFile)
             m_objfile_sp->GetModule()->ReportError(
-                "N_SO has incorrect symbol type (%u) for N_OSO symbol[%u], "
+                "N_SO has incorrect symbol type ({0}) for N_OSO "
+                "symbol[{1}], "
                 "please file a bug and attach the binary listed in this error",
                 so_symbol->GetType(), oso_idx);
           else if (oso_symbol->GetType() != eSymbolTypeSourceFile)
             m_objfile_sp->GetModule()->ReportError(
-                "N_OSO has incorrect symbol type (%u) for N_OSO symbol[%u], "
+                "N_OSO has incorrect symbol type ({0}) for N_OSO "
+                "symbol[{1}], "
                 "please file a bug and attach the binary listed in this error",
                 oso_symbol->GetType(), oso_idx);
         }
@@ -430,8 +434,8 @@
               "will not be loaded", oso_file.GetPath().c_str(),
               (uint32_t)llvm::sys::toTimeT(oso_mod_time),
               (uint32_t)llvm::sys::toTimeT(comp_unit_info->oso_mod_time));
-          obj_file->GetModule()->ReportError("%s",
-              comp_unit_info->oso_load_error.AsCString());
+          obj_file->GetModule()->ReportError(
+              "{0}", comp_unit_info->oso_load_error.AsCString());
           return nullptr;
         }
 
diff --git a/lldb/source/Plugins/SymbolFile/NativePDB/SymbolFileNativePDB.cpp b/lldb/source/Plugins/SymbolFile/NativePDB/SymbolFileNativePDB.cpp
--- a/lldb/source/Plugins/SymbolFile/NativePDB/SymbolFileNativePDB.cpp
+++ b/lldb/source/Plugins/SymbolFile/NativePDB/SymbolFileNativePDB.cpp
@@ -424,8 +424,9 @@
       child_block->AddRange(Block::Range(block_base - func_base, block.CodeSize));
     else {
       GetObjectFile()->GetModule()->ReportError(
-          "S_BLOCK32 at modi: %d offset: %d: adding range [0x%" PRIx64
-          "-0x%" PRIx64 ") which has a base that is less than the function's "
+          "S_BLOCK32 at modi: {0:d} offset: {1:d}: adding range "
+          "[{2:x16}-{3:x16}) which has a base that is less than the "
+          "function's "
           "low PC 0x%" PRIx64 ". Please file a bug and attach the file at the "
           "start of this error message",
           block_id.modi, block_id.offset, block_base,
diff --git a/lldb/source/Plugins/SymbolFile/PDB/PDBASTParser.cpp b/lldb/source/Plugins/SymbolFile/PDB/PDBASTParser.cpp
--- a/lldb/source/Plugins/SymbolFile/PDB/PDBASTParser.cpp
+++ b/lldb/source/Plugins/SymbolFile/PDB/PDBASTParser.cpp
@@ -1261,7 +1261,7 @@
     auto member_comp_type = member_type->GetLayoutCompilerType();
     if (!member_comp_type.GetCompleteType()) {
       symbol_file.GetObjectFile()->GetModule()->ReportError(
-          ":: Class '%s' has a member '%s' of type '%s' "
+          ":: Class '{0}' has a member '{1}' of type '{2}' "
           "which does not have a complete definition.",
           record_type.GetTypeName().GetCString(), member_name.c_str(),
           member_comp_type.GetTypeName().GetCString());
@@ -1371,7 +1371,7 @@
     auto base_comp_type = base_type->GetFullCompilerType();
     if (!base_comp_type.GetCompleteType()) {
       symbol_file.GetObjectFile()->GetModule()->ReportError(
-          ":: Class '%s' has a base class '%s' "
+          ":: Class '{0}' has a base class '{1}' "
           "which does not have a complete definition.",
           record_type.GetTypeName().GetCString(),
           base_comp_type.GetTypeName().GetCString());
@@ -1430,7 +1430,7 @@
   CompilerType method_comp_type = method_type->GetFullCompilerType();
   if (!method_comp_type.GetCompleteType()) {
     symbol_file.GetObjectFile()->GetModule()->ReportError(
-        ":: Class '%s' has a method '%s' whose type cannot be completed.",
+        ":: Class '{0}' has a method '{1}' whose type cannot be completed.",
         record_type.GetTypeName().GetCString(),
         method_comp_type.GetTypeName().GetCString());
     if (TypeSystemClang::StartTagDeclarationDefinition(method_comp_type))
diff --git a/lldb/source/Symbol/CompileUnit.cpp b/lldb/source/Symbol/CompileUnit.cpp
--- a/lldb/source/Symbol/CompileUnit.cpp
+++ b/lldb/source/Symbol/CompileUnit.cpp
@@ -361,9 +361,10 @@
           // address resolving is completely failing and more deserving of an
           // error message the user can see.
           resolved_sc.module_sp->ReportError(
-              "unable to resolve a line table file address 0x%" PRIx64 " back "
+              "unable to resolve a line table file address {0:x16} back "
               "to a compile unit, please file a bug and attach the address "
-              "and file.", line_entry.range.GetBaseAddress().GetFileAddress());
+              "and file.",
+              line_entry.range.GetBaseAddress().GetFileAddress());
         }
         sc_list.Append(sc);
       }
diff --git a/lldb/source/Symbol/DWARFCallFrameInfo.cpp b/lldb/source/Symbol/DWARFCallFrameInfo.cpp
--- a/lldb/source/Symbol/DWARFCallFrameInfo.cpp
+++ b/lldb/source/Symbol/DWARFCallFrameInfo.cpp
@@ -773,12 +773,12 @@
           // useful for compilers that move epilogue code into the body of a
           // function.)
           if (stack.empty()) {
-            LLDB_LOGF(log,
-                      "DWARFCallFrameInfo::%s(dwarf_offset: %" PRIx32
-                      ", startaddr: %" PRIx64
-                      " encountered DW_CFA_restore_state but state stack "
-                      "is empty. Corrupt unwind info?",
-                      __FUNCTION__, dwarf_offset, startaddr.GetFileAddress());
+            LLDB_LOG(log,
+                     "DWARFCallFrameInfo::{0}(dwarf_offset: "
+                     "{1:x16}, startaddr: [{2:x16}] encountered "
+                     "DW_CFA_restore_state but state stack "
+                     "is empty. Corrupt unwind info?",
+                     __FUNCTION__, dwarf_offset, startaddr.GetFileAddress());
             break;
           }
           lldb::addr_t offset = row->GetOffset();
diff --git a/lldb/source/Target/SectionLoadList.cpp b/lldb/source/Target/SectionLoadList.cpp
--- a/lldb/source/Target/SectionLoadList.cpp
+++ b/lldb/source/Target/SectionLoadList.cpp
@@ -106,8 +106,8 @@
           ModuleSP curr_module_sp(ats_pos->second->GetModule());
           if (curr_module_sp) {
             module_sp->ReportWarning(
-                "address 0x%16.16" PRIx64
-                " maps to more than one section: %s.%s and %s.%s",
+                "address {0:x16} maps to more than one section: {1}.{2} and "
+                "{3}.{4}",
                 load_addr, module_sp->GetFileSpec().GetFilename().GetCString(),
                 section->GetName().GetCString(),
                 curr_module_sp->GetFileSpec().GetFilename().GetCString(),
diff --git a/lldb/test/Shell/SymbolFile/DWARF/DW_AT_range-DW_FORM_sec_offset.s b/lldb/test/Shell/SymbolFile/DWARF/DW_AT_range-DW_FORM_sec_offset.s
--- a/lldb/test/Shell/SymbolFile/DWARF/DW_AT_range-DW_FORM_sec_offset.s
+++ b/lldb/test/Shell/SymbolFile/DWARF/DW_AT_range-DW_FORM_sec_offset.s
@@ -22,7 +22,7 @@
 # RUN: cat %t.error | FileCheck --check-prefix=ERROR %s
 
 # RNGLISTX-LABEL: image lookup -v -s lookup_rnglists
-# ERROR: error: {{.*}} {0x0000003f}: DIE has DW_AT_ranges(DW_FORM_rnglistx 0x0) attribute, but range extraction failed (DW_FORM_rnglistx cannot be used without DW_AT_rnglists_base for CU at 0x00000000), please file a bug and attach the file at the start of this error message
+# ERROR: error: {{.*}} [0x000000000000003f]: DIE has DW_AT_ranges(DW_FORM_rnglistx 0x0000000000000000) attribute, but range extraction failed (DW_FORM_rnglistx cannot be used without DW_AT_rnglists_base for CU at 0x0000000000000000), please file a bug and attach the file at the start of this error message
 
 # RUN: llvm-mc -triple=x86_64-pc-linux -filetype=obj \
 # RUN:   --defsym RNGLISTX=0 --defsym RNGLISTBASE=0 %s > %t-rnglistbase
@@ -31,7 +31,7 @@
 # RUN: cat %t.error | FileCheck --check-prefix=ERRORBASE %s
 
 # RNGLISTBASE-LABEL: image lookup -v -s lookup_rnglists
-# ERRORBASE: error: {{.*}}-rnglistbase {0x00000043}: DIE has DW_AT_ranges(DW_FORM_rnglistx 0x0) attribute, but range extraction failed (invalid range list table index 0; OffsetEntryCount is 0, DW_AT_rnglists_base is 24), please file a bug and attach the file at the start of this error message
+# ERRORBASE: error: {{.*}}-rnglistbase [0x0000000000000043]: DIE has DW_AT_ranges(DW_FORM_rnglistx 0x0000000000000000) attribute, but range extraction failed (invalid range list table index 0; OffsetEntryCount is 0, DW_AT_rnglists_base is 24), please file a bug and attach the file at the start of this error message
 
         .text
 rnglists:
diff --git a/lldb/test/Shell/SymbolFile/DWARF/x86/debug_ranges-missing-section.s b/lldb/test/Shell/SymbolFile/DWARF/x86/debug_ranges-missing-section.s
--- a/lldb/test/Shell/SymbolFile/DWARF/x86/debug_ranges-missing-section.s
+++ b/lldb/test/Shell/SymbolFile/DWARF/x86/debug_ranges-missing-section.s
@@ -2,7 +2,7 @@
 # RUN: %lldb %t -o "image lookup -v -s lookup_ranges" -o exit 2>%t.error | FileCheck %s
 # RUN: cat %t.error | FileCheck %s --check-prefix ERROR
 
-# ERROR: DIE has DW_AT_ranges(DW_FORM_sec_offset 0x47) attribute, but range extraction failed (No debug_ranges section),
+# ERROR: DIE has DW_AT_ranges(DW_FORM_sec_offset 0x0000000000000047) attribute, but range extraction failed (No debug_ranges section),
 # CHECK:  Function: id = {0x0000001c}, name = "ranges", range = [0x0000000000000000-0x0000000000000004)
 # CHECK:    Blocks: id = {0x0000001c}, range = [0x00000000-0x00000004)