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authorH.J. Lu <hjl.tools@gmail.com>2016-05-18 05:48:56 -0700
committerH.J. Lu <hjl.tools@gmail.com>2016-05-18 05:51:59 -0700
commit447720b03b4ac37cbc1367bf3aad56711a30a307 (patch)
tree2666c0567dfddb5d4dec23c9516635e707415b71 /benchtests
parent0014680d6a5bdeb4fe17682450105ebed19f35da (diff)
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Clear destination buffer updated by the previous run
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.
Diffstat (limited to 'benchtests')
-rw-r--r--benchtests/bench-memcpy.c4
-rw-r--r--benchtests/bench-memmove.c1
2 files changed, 5 insertions, 0 deletions
diff --git a/benchtests/bench-memcpy.c b/benchtests/bench-memcpy.c
index c5a7192..9d9e7b6 100644
--- a/benchtests/bench-memcpy.c
+++ b/benchtests/bench-memcpy.c
@@ -55,6 +55,10 @@ do_one_test (impl_t *impl, char *dst, const char *src,
size_t i, iters = INNER_LOOP_ITERS;
timing_t start, stop, cur;
+ /* Must clear the destination buffer set by the previous run. */
+ for (i = 0; i < len; i++)
+ dst[i] = 0;
+
if (CALL (impl, dst, src, len) != MEMCPY_RESULT (dst, len))
{
error (0, 0, "Wrong result in function %s %p %p", impl->name,
diff --git a/benchtests/bench-memmove.c b/benchtests/bench-memmove.c
index c38596b..3858f2a 100644
--- a/benchtests/bench-memmove.c
+++ b/benchtests/bench-memmove.c
@@ -70,6 +70,7 @@ do_one_test (impl_t *impl, char *dst, char *src, const char *orig_src,
size_t i, iters = INNER_LOOP_ITERS;
timing_t start, stop, cur;
+ /* This also clears the destination buffer set by the previous run. */
memcpy (src, orig_src, len);
#ifdef TEST_BCOPY
CALL (impl, src, dst, len);