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Clear destination buffer updated by the previous run

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Clear the destination buffer updated by the previous run in bench-memcpy.c
and test-memcpy.c to catch the error when the following implementations do
not copy anything.

	[BZ #19907]
	* benchtests/bench-memcpy.c (do_one_test): Clear the destination
	buffer updated by the previous run.
	* string/test-memcpy.c (do_one_test): Likewise.
	* benchtests/bench-memmove.c (do_one_test): Add a comment.
	* string/test-memmove.c (do_one_test): Likewise.
This commit is contained in:
H.J. Lu
2016-05-18 05:48:56 -07:00
parent 0014680d6a
commit 447720b03b
5 changed files with 21 additions and 0 deletions
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string/test-memmove.c
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@ -68,6 +68,7 @@ static void
do_one_test (impl_t *impl, char *dst, char *src, const char *orig_src,
size_t len)
{
/* This also clears the destination buffer set by the previous run. */
memcpy (src, orig_src, len);
#ifdef TEST_BCOPY
CALL (impl, src, dst, len);