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authorZachary Turner <zturner@google.com>2016-06-08 00:25:08 +0000
committerZachary Turner <zturner@google.com>2016-06-08 00:25:08 +0000
commitd2b2bfed9465847baa82a314d4da161b368395bb (patch)
treea394e7cbf39161112109b311381b2afc0e14de4c /llvm/lib/DebugInfo/PDB/Raw/TpiStream.cpp
parenta483eae2ff21d238ba3a872ef72ec7943acaefa2 (diff)
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[pdb] Try to fix use after free.
llvm-svn: 272078
Diffstat (limited to 'llvm/lib/DebugInfo/PDB/Raw/TpiStream.cpp')
-rw-r--r--llvm/lib/DebugInfo/PDB/Raw/TpiStream.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/DebugInfo/PDB/Raw/TpiStream.cpp b/llvm/lib/DebugInfo/PDB/Raw/TpiStream.cpp
index 386f8ac..f34a513 100644
--- a/llvm/lib/DebugInfo/PDB/Raw/TpiStream.cpp
+++ b/llvm/lib/DebugInfo/PDB/Raw/TpiStream.cpp
@@ -104,6 +104,10 @@ Error TpiStream::reload() {
return EC;
// Hash indices, hash values, etc come from the hash stream.
+ if (Header->HashStreamIndex >= Pdb.getNumStreams())
+ return make_error<RawError>(raw_error_code::corrupt_file,
+ "Invalid TPI hash stream index.");
+
HashStream.reset(new MappedBlockStream(
llvm::make_unique<IndexedStreamData>(Header->HashStreamIndex, Pdb), Pdb));
codeview::StreamReader HSR(*HashStream);