Mercurial > gnulib
view lib/memchr.valgrind @ 40212:8da9577294da
unistr/*, uniconv/*: Fix undefined behaviour.
Reported by Jeffrey Walton <noloader@gmail.com>.
* lib/unistr/u-cpy.h (FUNC): Don't invoke memcpy with a zero size.
* lib/unistr/u-cpy-alloc.h (FUNC): Likewise.
* lib/uniconv/u8-conv-from-enc.c (u8_conv_from_encoding): Likewise.
* lib/uniconv/u8-conv-to-enc.c (u8_conv_to_encoding): Likewise.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 09 Mar 2019 00:01:47 +0100 |
parents | dfac57b1ec9f |
children |
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# Suppress a valgrind message about use of uninitialized memory in memchr(). # POSIX states that when the character is found, memchr must not read extra # bytes in an overestimated length (for example, where memchr is used to # implement strnlen). However, we use a safe word read to provide a speedup. { memchr-value4 Memcheck:Value4 fun:rpl_memchr } { memchr-value8 Memcheck:Value8 fun:rpl_memchr }