diff options
| -rw-r--r-- | clang/lib/Lex/ScratchBuffer.cpp | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/clang/lib/Lex/ScratchBuffer.cpp b/clang/lib/Lex/ScratchBuffer.cpp index 42cfca73d3d..cd8a27e76c2 100644 --- a/clang/lib/Lex/ScratchBuffer.cpp +++ b/clang/lib/Lex/ScratchBuffer.cpp @@ -64,12 +64,13 @@ void ScratchBuffer::AllocScratchBuffer(unsigned RequestLen) { if (RequestLen < ScratchBufSize) RequestLen = ScratchBufSize; + // Get scratch buffer. Zero-initialize it so it can be dumped into a PCH file + // deterministically. std::unique_ptr<llvm::MemoryBuffer> OwnBuf = - llvm::MemoryBuffer::getNewUninitMemBuffer(RequestLen, "<scratch space>"); + llvm::MemoryBuffer::getNewMemBuffer(RequestLen, "<scratch space>"); llvm::MemoryBuffer &Buf = *OwnBuf; FileID FID = SourceMgr.createFileID(std::move(OwnBuf)); BufferStartLoc = SourceMgr.getLocForStartOfFile(FID); CurBuffer = const_cast<char*>(Buf.getBufferStart()); - BytesUsed = 1; - CurBuffer[0] = '0'; // Start out with a \0 for cleanliness. + BytesUsed = 0; } |
