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authorSamuel Holland <samuel@sholland.org>2016-03-20 11:13:21 -0700
committerRob Landley <rob@landley.net>2016-03-25 14:24:25 -0500
commite223cca4f66bf2e201b21869304dc63befbbf9be (patch)
treedc1581cf98284210de9cb9b2cf998211fe4fc9f6 /lib/dirtree.c
parenta8233286378a0254ade5ca2088a7bcc6a686b428 (diff)
downloadtoybox-e223cca4f66bf2e201b21869304dc63befbbf9be.tar.gz
basename: fix segfault on null input; add tests
When passed an empty string, glibc's basename() returns a pointer to the string "." in read-only memory. If an empty suffix is given, it fits the condition of being shorter than the path, so we try to overwrite the null byte and crash. Fix this by just ignoring empty suffixes; they don't do anything anyway.
Diffstat (limited to 'lib/dirtree.c')
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