diff options
| -rw-r--r-- | lld/COFF/InputFiles.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/lld/COFF/InputFiles.cpp b/lld/COFF/InputFiles.cpp index 87efd07e68c..6bdfd4faa82 100644 --- a/lld/COFF/InputFiles.cpp +++ b/lld/COFF/InputFiles.cpp @@ -18,6 +18,7 @@ #include "llvm/Support/Debug.h" #include "llvm/Support/Endian.h" #include "llvm/Support/raw_ostream.h" +#include <mutex> using namespace llvm::object; using namespace llvm::support::endian; @@ -76,7 +77,9 @@ std::error_code ArchiveFile::parse() { } // Returns a buffer pointing to a member file containing a given symbol. +// This function is thread-safe. ErrorOr<MemoryBufferRef> ArchiveFile::getMember(const Archive::Symbol *Sym) { + static std::mutex Mu; auto ItOrErr = Sym->getMember(); if (auto EC = ItOrErr.getError()) return EC; @@ -84,7 +87,9 @@ ErrorOr<MemoryBufferRef> ArchiveFile::getMember(const Archive::Symbol *Sym) { // Return an empty buffer if we have already returned the same buffer. const char *StartAddr = It->getBuffer().data(); + Mu.lock(); auto Pair = Seen.insert(StartAddr); + Mu.unlock(); if (!Pair.second) return MemoryBufferRef(); return It->getMemoryBufferRef(); |
