Index: lldb/include/lldb/Symbol/ObjectFile.h
===================================================================
--- lldb/include/lldb/Symbol/ObjectFile.h
+++ lldb/include/lldb/Symbol/ObjectFile.h
@@ -201,7 +201,7 @@
   ///     \b false otherwise and \a archive_file and \a archive_object
   ///     are guaranteed to be remain unchanged.
   static bool SplitArchivePathWithObject(
-      const char *path_with_object, lldb_private::FileSpec &archive_file,
+      llvm::StringRef path_with_object, lldb_private::FileSpec &archive_file,
       lldb_private::ConstString &archive_object, bool must_exist);
 
   // LLVM RTTI support
Index: lldb/source/Symbol/ObjectFile.cpp
===================================================================
--- lldb/source/Symbol/ObjectFile.cpp
+++ lldb/source/Symbol/ObjectFile.cpp
@@ -19,7 +19,6 @@
 #include "lldb/Utility/DataBuffer.h"
 #include "lldb/Utility/DataBufferHeap.h"
 #include "lldb/Utility/Log.h"
-#include "lldb/Utility/RegularExpression.h"
 #include "lldb/Utility/Timer.h"
 #include "lldb/lldb-private.h"
 
@@ -83,9 +82,8 @@
 
       if (!data_sp || data_sp->GetByteSize() == 0) {
         // Check for archive file with format "/path/to/archive.a(object.o)"
-        char path_with_object[PATH_MAX * 2];
-        module_sp->GetFileSpec().GetPath(path_with_object,
-                                         sizeof(path_with_object));
+        llvm::SmallString<PATH_MAX * 2> path_with_object;
+        module_sp->GetFileSpec().GetPath(path_with_object);
 
         ConstString archive_object;
         const bool must_exist = true;
@@ -571,21 +569,22 @@
   }
 }
 
-bool ObjectFile::SplitArchivePathWithObject(const char *path_with_object,
+bool ObjectFile::SplitArchivePathWithObject(llvm::StringRef path_with_object,
                                             FileSpec &archive_file,
                                             ConstString &archive_object,
                                             bool must_exist) {
-  llvm::SmallVector<llvm::StringRef, 3> matches;
-  RegularExpression g_object_regex(llvm::StringRef("(.*)\\(([^\\)]+)\\)$"));
-  if (g_object_regex.Execute(llvm::StringRef::withNullAsEmpty(path_with_object),
-                             &matches)) {
-    std::string path = matches[1].str();
-    std::string obj = matches[2].str();
-    archive_file.SetFile(path, FileSpec::Style::native);
-    archive_object.SetCString(obj.c_str());
-    return !(must_exist && !FileSystem::Instance().Exists(archive_file));
-  }
-  return false;
+  size_t len = path_with_object.size();
+  if (len < 2 || path_with_object[len-1] != ')')
+    return false;
+  llvm::StringRef archive = path_with_object.substr(0, path_with_object.rfind('('));
+  if (archive.empty())
+    return false;
+  llvm::StringRef object = path_with_object.substr(archive.size() + 1).drop_back();
+  archive_file.SetFile(archive, FileSpec::Style::native);
+  if (must_exist && !FileSystem::Instance().Exists(archive_file))
+    return false;
+  archive_object.SetString(object);
+  return true;
 }
 
 void ObjectFile::ClearSymtab() {