diff options
Diffstat (limited to 'llvm/lib/Support/Compression.cpp')
| -rw-r--r-- | llvm/lib/Support/Compression.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/llvm/lib/Support/Compression.cpp b/llvm/lib/Support/Compression.cpp index 00f88a3..eda67c5 100644 --- a/llvm/lib/Support/Compression.cpp +++ b/llvm/lib/Support/Compression.cpp @@ -57,7 +57,8 @@ void zlib::compress(StringRef InputBuffer, // Tell MemorySanitizer that zlib output buffer is fully initialized. // This avoids a false report when running LLVM with uninstrumented ZLib. __msan_unpoison(CompressedBuffer.data(), CompressedSize); - CompressedBuffer.truncate(CompressedSize); + if (CompressedSize < CompressedBuffer.size()) + CompressedBuffer.truncate(CompressedSize); } Error zlib::uncompress(StringRef InputBuffer, char *UncompressedBuffer, @@ -79,7 +80,8 @@ Error zlib::uncompress(StringRef InputBuffer, UncompressedBuffer.resize_for_overwrite(UncompressedSize); Error E = zlib::uncompress(InputBuffer, UncompressedBuffer.data(), UncompressedSize); - UncompressedBuffer.truncate(UncompressedSize); + if (UncompressedSize < UncompressedBuffer.size()) + UncompressedBuffer.truncate(UncompressedSize); return E; } |