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| author | Peter Collingbourne <peter@pcc.me.uk> | 2016-11-02 00:39:11 +0000 |
|---|---|---|
| committer | Peter Collingbourne <peter@pcc.me.uk> | 2016-11-02 00:39:11 +0000 |
| commit | ff2c2ec6b225c690234056a16fd1bc07e203ca0e (patch) | |
| tree | 755f334515b281fb98066e3bbf6dbdd58a01dc87 /llvm/lib/Bitcode/Reader/BitcodeReader.cpp | |
| parent | 07b83767a041cbe3dcb5b1ae6144c551e45b33b1 (diff) | |
| download | bcm5719-llvm-ff2c2ec6b225c690234056a16fd1bc07e203ca0e.tar.gz bcm5719-llvm-ff2c2ec6b225c690234056a16fd1bc07e203ca0e.zip | |
Bitcode: Check file size before reading bitcode header.
Should unbreak ocaml binding tests.
Also added an llvm-dis test that checks for the same thing.
llvm-svn: 285777
Diffstat (limited to 'llvm/lib/Bitcode/Reader/BitcodeReader.cpp')
| -rw-r--r-- | llvm/lib/Bitcode/Reader/BitcodeReader.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp index 710187af951..954d482c5a9 100644 --- a/llvm/lib/Bitcode/Reader/BitcodeReader.cpp +++ b/llvm/lib/Bitcode/Reader/BitcodeReader.cpp @@ -4144,7 +4144,8 @@ std::error_code BitcodeReader::parseModule(uint64_t ResumeBit, /// Helper to read the header common to all bitcode files. static bool hasValidBitcodeHeader(BitstreamCursor &Stream) { // Sniff for the signature. - if (Stream.Read(8) != 'B' || + if (!Stream.canSkipToPos(4) || + Stream.Read(8) != 'B' || Stream.Read(8) != 'C' || Stream.Read(4) != 0x0 || Stream.Read(4) != 0xC || |
