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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 | 96ebd91d6cb0229ae940d3e2970eb145a183fb93 (patch) | |
| tree | 4153427470fa2765d92507f4f731d962d553e661 /llvm/lib/Support | |
| parent | 42908c7ac9955c80e8550ed3749f4446461ed5d8 (diff) | |
| download | bcm5719-llvm-96ebd91d6cb0229ae940d3e2970eb145a183fb93.tar.gz bcm5719-llvm-96ebd91d6cb0229ae940d3e2970eb145a183fb93.zip | |
[Support/PathV2] Fix out of bounds access in identify_magic when the file is empty.
llvm-svn: 158704
Diffstat (limited to 'llvm/lib/Support')
| -rw-r--r-- | llvm/lib/Support/PathV2.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Support/PathV2.cpp b/llvm/lib/Support/PathV2.cpp index e2a69a650db..46571c049f1 100644 --- a/llvm/lib/Support/PathV2.cpp +++ b/llvm/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 && |
