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path: root/src/string/memmem.c
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2014-06-19fix incorrect comparison loop condition in memmemRich Felker1-2/+2
the logic for this loop was copied from null-terminated-string logic in strstr without properly adapting it to work with explicit lengths. presumably this error could result in false negatives (wrongly comparing past the end of the needle/haystack), false positives (stopping comparison early when the needle contains null bytes), and crashes (from runaway reads past the end of mapped memory).
2014-04-18fix false negatives with periodic needles in strstr, wcsstr, and memmemRich Felker1-1/+1
in cases where the memorized match range from the right factor exceeded the length of the left factor, it was wrongly treated as a mismatch rather than a match. issue reported by Yves Bastide.
2014-04-09fix search past the end of haystack in memmemTimo Teräs1-0/+1
to optimize the search, memchr is used to find the first occurrence of the first character of the needle in the haystack before switching to a search for the full needle. however, the number of characters skipped by this first step were not subtracted from the haystack length, causing memmem to search past the end of the haystack.
2013-12-12include cleanups: remove unused headers and add feature test macrosSzabolcs Nagy1-1/+0
2012-10-15add memmem function (gnu extension)Rich Felker1-0/+148
based on strstr. passes gnulib tests and a few quick checks of my own.