Merge {COFF,ELF}/Strings.cpp to Common/Strings.cpp.

[ruiu]

Summary

This should resolve the issue that lld build fails in some hosts
that uses case-insensitive file system.

[DxCx]

Patch is working well, i was able to compile and use lld, Thanks!

lld/COFF/CMakeLists.txt

add_lld_library(lldCOFF
   DriverUtils.cpp
   ICF.cpp
   InputFiles.cpp
   LTO.cpp
   MapFile.cpp
   MarkLive.cpp
   MinGW.cpp
   PDB.cpp
-  Strings.cpp
   SymbolTable.cpp
   Symbols.cpp
   Writer.cpp
 
   LINK_COMPONENTS
   ${LLVM_TARGETS_TO_BUILD}
   BinaryFormat
   Core

lld/COFF/Strings.h

-//===- Strings.h ------------------------------------------------*- C++ -*-===//
-//
-//                             The LLVM Linker
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLD_COFF_STRINGS_H
-#define LLD_COFF_STRINGS_H
-
-#include "llvm/ADT/Optional.h"
-#include "llvm/ADT/StringRef.h"
-#include <string>
-
-namespace lld {
-namespace coff {
-llvm::Optional<std::string> demangleMSVC(llvm::StringRef S);
-}
-}
-
-#endif

lld/COFF/Strings.cpp

-//===- Strings.cpp -------------------------------------------------------===//
-//
-//                             The LLVM Linker
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "Strings.h"
-#include <mutex>
-
-#if defined(_MSC_VER)
-#include <Windows.h>
-#include <DbgHelp.h>
-#pragma comment(lib, "dbghelp.lib")
-#endif
-
-using namespace lld;
-using namespace lld::coff;
-using namespace llvm;
-
-Optional<std::string> coff::demangleMSVC(StringRef S) {
-#if defined(_MSC_VER)
-  // UnDecorateSymbolName is not thread-safe, so we need a mutex.
-  static std::mutex Mu;
-  std::lock_guard<std::mutex> Lock(Mu);
-
-  char Buf[4096];
-  if (S.startswith("?"))
-    if (size_t Len = UnDecorateSymbolName(S.str().c_str(), Buf, sizeof(Buf), 0))
-      return std::string(Buf, Len);
-#endif
-  return None;
-}

lld/COFF/Symbols.cpp

 //===- Symbols.cpp --------------------------------------------------------===//
 //
 //                             The LLVM Linker
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 #include "Symbols.h"
 #include "InputFiles.h"
-#include "Strings.h"
 #include "lld/Common/ErrorHandler.h"
 #include "lld/Common/Memory.h"
+#include "lld/Common/Strings.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/raw_ostream.h"
 
 using namespace llvm;
 using namespace llvm::object;
 
 // Returns a symbol name for an error message.
 std::string lld::toString(coff::Symbol &B) {
-  if (Optional<std::string> S = coff::demangleMSVC(B.getName()))
+  if (Optional<std::string> S = lld::demangleMSVC(B.getName()))
     return ("\"" + *S + "\" (" + B.getName() + ")").str();
   return B.getName();
 }
 
 namespace lld {
 namespace coff {
 
 StringRef Symbol::getName() {

lld/Common/Strings.cpp

 //===- Strings.cpp -------------------------------------------------------===//
 //
 //                             The LLVM Linker
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 #include "lld/Common/Strings.h"
+#include "lld/Common/ErrorHandler.h"
+#include "lld/Common/LLVM.h"
 #include "llvm/Demangle/Demangle.h"
+#include "llvm/Support/GlobPattern.h"
+#include <algorithm>
+#include <mutex>
+#include <vector>
+
+#if defined(_MSC_VER)
+#include <DbgHelp.h>
+#include <Windows.h>
+#pragma comment(lib, "dbghelp.lib")
+#endif
 
 using namespace llvm;
 using namespace lld;
 
 // Returns the demangled C++ symbol name for Name.
 Optional<std::string> lld::demangleItanium(StringRef Name) {
   // itaniumDemangle can be used to demangle strings other than symbol
   // names which do not necessarily start with "_Z". Name can be
   // either a C or C++ symbol. Don't call itaniumDemangle if the name
   // does not look like a C++ symbol name to avoid getting unexpected
   // result for a C symbol that happens to match a mangled type name.
   if (!Name.startswith("_Z"))
     return None;
 
   char *Buf = itaniumDemangle(Name.str().c_str(), nullptr, nullptr, nullptr);
   if (!Buf)
     return None;
   std::string S(Buf);
   free(Buf);
   return S;
 }
+
+Optional<std::string> lld::demangleMSVC(StringRef S) {
+#if defined(_MSC_VER)
+  // UnDecorateSymbolName is not thread-safe, so we need a mutex.
+  static std::mutex Mu;
+  std::lock_guard<std::mutex> Lock(Mu);
+
+  char Buf[4096];
+  if (S.startswith("?"))
+    if (size_t Len = UnDecorateSymbolName(S.str().c_str(), Buf, sizeof(Buf), 0))
+      return std::string(Buf, Len);
+#endif
+  return None;
+}
+
+StringMatcher::StringMatcher(ArrayRef<StringRef> Pat) {
+  for (StringRef S : Pat) {
+    Expected<GlobPattern> Pat = GlobPattern::create(S);
+    if (!Pat)
+      error(toString(Pat.takeError()));
+    else
+      Patterns.push_back(*Pat);
+  }
+}
+
+bool StringMatcher::match(StringRef S) const {
+  for (const GlobPattern &Pat : Patterns)
+    if (Pat.match(S))
+      return true;
+  return false;
+}
+
+// Converts a hex string (e.g. "deadbeef") to a vector.
+std::vector<uint8_t> lld::parseHex(StringRef S) {
+  std::vector<uint8_t> Hex;
+  while (!S.empty()) {
+    StringRef B = S.substr(0, 2);
+    S = S.substr(2);
+    uint8_t H;
+    if (!to_integer(B, H, 16)) {
+      error("not a hexadecimal value: " + B);
+      return {};
+    }
+    Hex.push_back(H);
+  }
+  return Hex;
+}
+
+// Returns true if S is valid as a C language identifier.
+bool lld::isValidCIdentifier(StringRef S) {
+  return !S.empty() && (isAlpha(S[0]) || S[0] == '_') &&
+         std::all_of(S.begin() + 1, S.end(),
+                     [](char C) { return C == '_' || isAlnum(C); });
+}

lld/ELF/AArch64ErrataFix.cpp

 // architectures or selection of different patches.
 //===----------------------------------------------------------------------===//
 
 #include "AArch64ErrataFix.h"
 #include "Config.h"
 #include "LinkerScript.h"
 #include "OutputSections.h"
 #include "Relocations.h"
-#include "Strings.h"
 #include "Symbols.h"
 #include "SyntheticSections.h"
 #include "Target.h"
 #include "lld/Common/Memory.h"
+#include "lld/Common/Strings.h"
 #include "llvm/Support/Endian.h"
 #include "llvm/Support/raw_ostream.h"
 #include <algorithm>
 
 using namespace llvm;
 using namespace llvm::ELF;
 using namespace llvm::object;
 using namespace llvm::support;

lld/ELF/CMakeLists.txt

add_lld_library(lldELF
   LTO.cpp
   LinkerScript.cpp
   MapFile.cpp
   MarkLive.cpp
   OutputSections.cpp
   Relocations.cpp
   ScriptLexer.cpp
   ScriptParser.cpp
-  Strings.cpp
   SymbolTable.cpp
   Symbols.cpp
   SyntheticSections.cpp
   Target.cpp
   Thunks.cpp
   Writer.cpp
 
   LINK_COMPONENTS

lld/ELF/Driver.cpp

 #include "Filesystem.h"
 #include "ICF.h"
 #include "InputFiles.h"
 #include "InputSection.h"
 #include "LinkerScript.h"
 #include "MarkLive.h"
 #include "OutputSections.h"
 #include "ScriptParser.h"
-#include "Strings.h"
 #include "SymbolTable.h"
 #include "Symbols.h"
 #include "SyntheticSections.h"
 #include "Target.h"
 #include "Writer.h"
 #include "lld/Common/Args.h"
 #include "lld/Common/Driver.h"
 #include "lld/Common/ErrorHandler.h"
 #include "lld/Common/Memory.h"
+#include "lld/Common/Strings.h"
 #include "lld/Common/TargetOptionsCommandFlags.h"
 #include "lld/Common/Threads.h"
 #include "lld/Common/Version.h"
 #include "llvm/ADT/SetVector.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/ADT/StringSwitch.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Compression.h"

lld/ELF/EhFrame.cpp

 // This file contains a few utility functions to read .eh_frame contents.
 //
 //===----------------------------------------------------------------------===//
 
 #include "EhFrame.h"
 #include "Config.h"
 #include "InputSection.h"
 #include "Relocations.h"
-#include "Strings.h"
 #include "lld/Common/ErrorHandler.h"
+#include "lld/Common/Strings.h"
 #include "llvm/BinaryFormat/Dwarf.h"
 #include "llvm/Object/ELF.h"
 #include "llvm/Support/Endian.h"
 
 using namespace llvm;
 using namespace llvm::ELF;
 using namespace llvm::dwarf;
 using namespace llvm::object;

lld/ELF/LinkerScript.h

 //===- LinkerScript.h -------------------------------------------*- C++ -*-===//
 //
 //                             The LLVM Linker
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLD_ELF_LINKER_SCRIPT_H
 #define LLD_ELF_LINKER_SCRIPT_H
 
 #include "Config.h"
-#include "Strings.h"
 #include "Writer.h"
 #include "lld/Common/LLVM.h"
+#include "lld/Common/Strings.h"
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/DenseSet.h"
 #include "llvm/ADT/MapVector.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include <cstddef>
 #include <cstdint>

lld/ELF/LinkerScript.cpp

 // This file contains the parser/evaluator of the linker script.
 //
 //===----------------------------------------------------------------------===//
 
 #include "LinkerScript.h"
 #include "Config.h"
 #include "InputSection.h"
 #include "OutputSections.h"
-#include "Strings.h"
 #include "SymbolTable.h"
 #include "Symbols.h"
 #include "SyntheticSections.h"
 #include "Target.h"
 #include "Writer.h"
 #include "lld/Common/Memory.h"
+#include "lld/Common/Strings.h"
 #include "lld/Common/Threads.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/BinaryFormat/ELF.h"
 #include "llvm/Support/Casting.h"
 #include "llvm/Support/Endian.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/FileSystem.h"

lld/ELF/MapFile.cpp

 //   00201005 00000000     0                 f(int)
 //
 //===----------------------------------------------------------------------===//
 
 #include "MapFile.h"
 #include "InputFiles.h"
 #include "LinkerScript.h"
 #include "OutputSections.h"
-#include "Strings.h"
 #include "SymbolTable.h"
 #include "Symbols.h"
 #include "SyntheticSections.h"
+#include "lld/Common/Strings.h"
 #include "lld/Common/Threads.h"
 #include "llvm/Support/raw_ostream.h"
 
 using namespace llvm;
 using namespace llvm::object;
 
 using namespace lld;
 using namespace lld::elf;

lld/ELF/MarkLive.cpp

 // such sections are not included into output.
 //
 //===----------------------------------------------------------------------===//
 
 #include "MarkLive.h"
 #include "InputSection.h"
 #include "LinkerScript.h"
 #include "OutputSections.h"
-#include "Strings.h"
 #include "SymbolTable.h"
 #include "Symbols.h"
 #include "Target.h"
 #include "lld/Common/Memory.h"
+#include "lld/Common/Strings.h"
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/Object/ELF.h"
 #include <functional>
 #include <vector>
 
 using namespace llvm;
 using namespace llvm::ELF;
 using namespace llvm::object;

lld/ELF/OutputSections.cpp

 //===- OutputSections.cpp -------------------------------------------------===//
 //
 //                             The LLVM Linker
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 #include "OutputSections.h"
 #include "Config.h"
 #include "LinkerScript.h"
-#include "Strings.h"
 #include "SymbolTable.h"
 #include "SyntheticSections.h"
 #include "Target.h"
 #include "lld/Common/Memory.h"
+#include "lld/Common/Strings.h"
 #include "lld/Common/Threads.h"
 #include "llvm/BinaryFormat/Dwarf.h"
 #include "llvm/Support/Compression.h"
 #include "llvm/Support/MD5.h"
 #include "llvm/Support/MathExtras.h"
 #include "llvm/Support/SHA1.h"
 
 using namespace llvm;

lld/ELF/Relocations.cpp

 // vector to let it apply later in InputSection::writeTo.
 //
 //===----------------------------------------------------------------------===//
 
 #include "Relocations.h"
 #include "Config.h"
 #include "LinkerScript.h"
 #include "OutputSections.h"
-#include "Strings.h"
 #include "SymbolTable.h"
 #include "Symbols.h"
 #include "SyntheticSections.h"
 #include "Target.h"
 #include "Thunks.h"
 #include "lld/Common/Memory.h"
+#include "lld/Common/Strings.h"
 #include "llvm/Support/Endian.h"
 #include "llvm/Support/raw_ostream.h"
 #include <algorithm>
 
 using namespace llvm;
 using namespace llvm::ELF;
 using namespace llvm::object;
 using namespace llvm::support::endian;

lld/ELF/Strings.h

-//===- Strings.h ------------------------------------------------*- C++ -*-===//
-//
-//                             The LLVM Linker
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLD_ELF_STRINGS_H
-#define LLD_ELF_STRINGS_H
-
-#include "lld/Common/LLVM.h"
-#include "llvm/ADT/ArrayRef.h"
-#include "llvm/ADT/BitVector.h"
-#include "llvm/ADT/Optional.h"
-#include "llvm/ADT/StringRef.h"
-#include "llvm/Support/GlobPattern.h"
-#include <vector>
-
-namespace lld {
-namespace elf {
-
-std::vector<uint8_t> parseHex(StringRef S);
-bool isValidCIdentifier(StringRef S);
-
-// This is a lazy version of StringRef. String size is computed lazily
-// when it is needed. It is more efficient than StringRef to instantiate
-// if you have a string whose size is unknown.
-//
-// ELF string tables contain a lot of null-terminated strings.
-// Most of them are not necessary for the linker because they are names
-// of local symbols and the linker doesn't use local symbol names for
-// name resolution. So, we use this class to represents strings read
-// from string tables.
-class StringRefZ {
-public:
-  StringRefZ() : Start(nullptr), Size(0) {}
-  StringRefZ(const char *S, size_t Size) : Start(S), Size(Size) {}
-
-  /*implicit*/ StringRefZ(const char *S) : Start(S), Size(-1) {}
-
-  /*implicit*/ StringRefZ(llvm::StringRef S)
-      : Start(S.data()), Size(S.size()) {}
-
-  operator llvm::StringRef() const {
-    if (Size == (size_t)-1)
-      Size = strlen(Start);
-    return {Start, Size};
-  }
-
-private:
-  const char *Start;
-  mutable size_t Size;
-};
-
-// This class represents multiple glob patterns.
-class StringMatcher {
-public:
-  StringMatcher() = default;
-  explicit StringMatcher(ArrayRef<StringRef> Pat);
-
-  bool match(StringRef S) const;
-
-private:
-  std::vector<llvm::GlobPattern> Patterns;
-};
-
-inline ArrayRef<uint8_t> toArrayRef(StringRef S) {
-  return {(const uint8_t *)S.data(), S.size()};
-}
-} // namespace elf
-} // namespace lld
-
-#endif

lld/ELF/Strings.cpp

-//===- Strings.cpp -------------------------------------------------------===//
-//
-//                             The LLVM Linker
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "Strings.h"
-#include "Config.h"
-#include "lld/Common/ErrorHandler.h"
-#include "llvm/ADT/Twine.h"
-#include "llvm/Demangle/Demangle.h"
-#include <algorithm>
-#include <cstring>
-
-using namespace llvm;
-using namespace lld;
-using namespace lld::elf;
-
-StringMatcher::StringMatcher(ArrayRef<StringRef> Pat) {
-  for (StringRef S : Pat) {
-    Expected<GlobPattern> Pat = GlobPattern::create(S);
-    if (!Pat)
-      error(toString(Pat.takeError()));
-    else
-      Patterns.push_back(*Pat);
-  }
-}
-
-bool StringMatcher::match(StringRef S) const {
-  for (const GlobPattern &Pat : Patterns)
-    if (Pat.match(S))
-      return true;
-  return false;
-}
-
-// Converts a hex string (e.g. "deadbeef") to a vector.
-std::vector<uint8_t> elf::parseHex(StringRef S) {
-  std::vector<uint8_t> Hex;
-  while (!S.empty()) {
-    StringRef B = S.substr(0, 2);
-    S = S.substr(2);
-    uint8_t H;
-    if (!to_integer(B, H, 16)) {
-      error("not a hexadecimal value: " + B);
-      return {};
-    }
-    Hex.push_back(H);
-  }
-  return Hex;
-}
-
-// Returns true if S is valid as a C language identifier.
-bool elf::isValidCIdentifier(StringRef S) {
-  return !S.empty() && (isAlpha(S[0]) || S[0] == '_') &&
-         std::all_of(S.begin() + 1, S.end(),
-                     [](char C) { return C == '_' || isAlnum(C); });
-}

lld/ELF/SymbolTable.h

 //===- SymbolTable.h --------------------------------------------*- C++ -*-===//
 //
 //                             The LLVM Linker
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLD_ELF_SYMBOL_TABLE_H
 #define LLD_ELF_SYMBOL_TABLE_H
 
 #include "InputFiles.h"
 #include "LTO.h"
-#include "Strings.h"
+#include "lld/Common/Strings.h"
 #include "llvm/ADT/CachedHashString.h"
 #include "llvm/ADT/DenseMap.h"
 
 namespace lld {
 namespace elf {
 class Defined;
 class SectionBase;
 

lld/ELF/Symbols.h

 // This file defines various types of SymbolBodies.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLD_ELF_SYMBOLS_H
 #define LLD_ELF_SYMBOLS_H
 
 #include "InputSection.h"
-#include "Strings.h"
 #include "lld/Common/LLVM.h"
+#include "lld/Common/Strings.h"
 #include "llvm/Object/Archive.h"
 #include "llvm/Object/ELF.h"
 
 namespace lld {
 namespace elf {
 
 class ArchiveFile;
 class BitcodeFile;

lld/ELF/SyntheticSections.cpp

 //===----------------------------------------------------------------------===//
 
 #include "SyntheticSections.h"
 #include "Bits.h"
 #include "Config.h"
 #include "InputFiles.h"
 #include "LinkerScript.h"
 #include "OutputSections.h"
-#include "Strings.h"
 #include "SymbolTable.h"
 #include "Symbols.h"
 #include "Target.h"
 #include "Writer.h"
 #include "lld/Common/ErrorHandler.h"
 #include "lld/Common/Memory.h"
+#include "lld/Common/Strings.h"
 #include "lld/Common/Threads.h"
 #include "lld/Common/Version.h"
 #include "llvm/BinaryFormat/Dwarf.h"
 #include "llvm/DebugInfo/DWARF/DWARFDebugPubTable.h"
 #include "llvm/Object/Decompressor.h"
 #include "llvm/Object/ELFObjectFile.h"
 #include "llvm/Support/Endian.h"
 #include "llvm/Support/LEB128.h"

lld/ELF/Writer.cpp

 #include "Writer.h"
 #include "AArch64ErrataFix.h"
 #include "Config.h"
 #include "Filesystem.h"
 #include "LinkerScript.h"
 #include "MapFile.h"
 #include "OutputSections.h"
 #include "Relocations.h"
-#include "Strings.h"
 #include "SymbolTable.h"
 #include "Symbols.h"
 #include "SyntheticSections.h"
 #include "Target.h"
 #include "lld/Common/Memory.h"
+#include "lld/Common/Strings.h"
 #include "lld/Common/Threads.h"
 #include "llvm/ADT/StringMap.h"
 #include "llvm/ADT/StringSwitch.h"
 #include <climits>
 
 using namespace llvm;
 using namespace llvm::ELF;
 using namespace llvm::object;

lld/include/lld/Common/Strings.h

 //===- Strings.h ------------------------------------------------*- C++ -*-===//
 //
 //                             The LLVM Linker
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLD_STRINGS_H
 #define LLD_STRINGS_H
 
+#include "llvm/ADT/ArrayRef.h"
 #include "llvm/ADT/Optional.h"
 #include "llvm/ADT/StringRef.h"
+#include "llvm/Support/GlobPattern.h"
 #include <string>
+#include <vector>
+
+namespace llvm {
+class GlobPattern;
+}
 
 namespace lld {
 // Returns a demangled C++ symbol name. If Name is not a mangled
 // name, it returns Optional::None.
 llvm::Optional<std::string> demangleItanium(llvm::StringRef Name);
+llvm::Optional<std::string> demangleMSVC(llvm::StringRef S);
+
+std::vector<uint8_t> parseHex(llvm::StringRef S);
+bool isValidCIdentifier(llvm::StringRef S);
+
+// This is a lazy version of StringRef. String size is computed lazily
+// when it is needed. It is more efficient than StringRef to instantiate
+// if you have a string whose size is unknown.
+//
+// ELF string tables contain a lot of null-terminated strings.
+// Most of them are not necessary for the linker because they are names
+// of local symbols and the linker doesn't use local symbol names for
+// name resolution. So, we use this class to represents strings read
+// from string tables.
+class StringRefZ {
+public:
+  StringRefZ() : Start(nullptr), Size(0) {}
+  StringRefZ(const char *S, size_t Size) : Start(S), Size(Size) {}
+
+  /*implicit*/ StringRefZ(const char *S) : Start(S), Size(-1) {}
+
+  /*implicit*/ StringRefZ(llvm::StringRef S)
+      : Start(S.data()), Size(S.size()) {}
+
+  operator llvm::StringRef() const {
+    if (Size == (size_t)-1)
+      Size = strlen(Start);
+    return {Start, Size};
+  }
+
+private:
+  const char *Start;
+  mutable size_t Size;
+};
+
+// This class represents multiple glob patterns.
+class StringMatcher {
+public:
+  StringMatcher() = default;
+  explicit StringMatcher(llvm::ArrayRef<llvm::StringRef> Pat);
+
+  bool match(llvm::StringRef S) const;
+
+private:
+  std::vector<llvm::GlobPattern> Patterns;
+};
+
+inline llvm::ArrayRef<uint8_t> toArrayRef(llvm::StringRef S) {
+  return {(const uint8_t *)S.data(), S.size()};
+}
 }
 
 #endif