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tests/test-mmap.c: Check mmap() return value before using it

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Correct the position of a "stop if MAP_FAILED" check in the mmap()
tests, so that if mmap() does fail we print a failure message
rather than segfaulting inside memcpy().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
This commit is contained in:
Peter Maydell 2011-04-14 14:11:56 +01:00 committed by Edgar E. Iglesias
parent 4d9ad7f793
commit 420b6c317d
1 changed files with 1 additions and 1 deletions
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2
tests/test-mmap.c
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@ -164,6 +164,7 @@ void check_aligned_anonymous_unfixed_colliding_mmaps(void)
nlen = pagesize * 8;
p3 = mmap(NULL, nlen, PROT_READ,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
fail_unless (p3 != MAP_FAILED);
/* Check if the mmaped areas collide. */
if (p3 < p2
@ -174,7 +175,6 @@ void check_aligned_anonymous_unfixed_colliding_mmaps(void)
/* Make sure we get pages aligned with the pagesize. The
target expects this. */
fail_unless (p3 != MAP_FAILED);
p = (uintptr_t) p3;
fail_unless ((p & pagemask) == 0);
munmap (p2, pagesize);