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| author | Michael J. Spencer <bigcheesegs@gmail.com> | 2012-06-19 05:29:57 +0000 |
|---|---|---|
| committer | Michael J. Spencer <bigcheesegs@gmail.com> | 2012-06-19 05:29:57 +0000 |
| commit | b51c8e9bb5769ed17261392ff4222ad3a6668285 (patch) | |
| tree | 088d38e2613f28277606050f05325c31a0faf5fb /lib/Support/PathV2.cpp | |
| parent | bde801b2a7e20f3de62cacc3ef643cf0ed6e2c27 (diff) | |
| download | llvm-b51c8e9bb5769ed17261392ff4222ad3a6668285.tar.gz llvm-b51c8e9bb5769ed17261392ff4222ad3a6668285.tar.bz2 llvm-b51c8e9bb5769ed17261392ff4222ad3a6668285.tar.xz | |
[Support/PathV2] Fix out of bounds access in identify_magic when the file is empty.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@158704 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Support/PathV2.cpp')
| -rw-r--r-- | lib/Support/PathV2.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Support/PathV2.cpp b/lib/Support/PathV2.cpp index e2a69a650d..46571c049f 100644 --- a/lib/Support/PathV2.cpp +++ b/lib/Support/PathV2.cpp @@ -744,6 +744,8 @@ error_code has_magic(const Twine &path, const Twine &magic, bool &result) { /// @brief Identify the magic in magic. file_magic identify_magic(StringRef magic) { + if (magic.size() < 4) + return file_magic::unknown; switch ((unsigned char)magic[0]) { case 0xDE: // 0x0B17C0DE = BC wraper if (magic[1] == (char)0xC0 && magic[2] == (char)0x17 && |