diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/DebugInfo/PDB/Raw/PDBFile.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/DebugInfo/PDB/Raw/PDBFile.cpp b/llvm/lib/DebugInfo/PDB/Raw/PDBFile.cpp index be1368eb94f..0adabfe625c 100644 --- a/llvm/lib/DebugInfo/PDB/Raw/PDBFile.cpp +++ b/llvm/lib/DebugInfo/PDB/Raw/PDBFile.cpp @@ -122,6 +122,11 @@ std::error_code PDBFile::parseFileHeaders() { Context->SB = reinterpret_cast<const SuperBlock *>(BufferRef.getBufferStart()); const SuperBlock *SB = Context->SB; + + // Make sure the file is sufficiently large to hold a super block. + if (BufferRef.getBufferSize() < sizeof(SuperBlock)) + return std::make_error_code(std::errc::illegal_byte_sequence); + // Check the magic bytes. if (memcmp(SB->MagicBytes, Magic, sizeof(Magic)) != 0) return std::make_error_code(std::errc::illegal_byte_sequence); |
