Re: [Check-devel] How can I check segfault error for malloc(0)

[Branden A. <b.m...@gm...>]

Are you attempting to detect the segfault and allow the test to pass or
fail?

If you expect the test to pass if and only if it ends in a segfault, you
will need to use the tcase_add_test_raise_signal()
<https://libcheck.github.io/check/doc/doxygen/html/check_8h.html#a5bee959c746a315a6ac360d6516c2119>
call
to add the test case. For example
<https://github.com/libcheck/check/blob/master/tests/check_check_sub.c>:


START_TEST(test_segv_pass)
{
   raise (SIGSEGV);
}
END_TEST

...

TCase *tc_signal;
tc_signal = tcase_create("Signal Tests");
tcase_add_test_raise_signal (tc_signal, test_segv_pass, 11); /* pass */


If you expect the test case to fail if a segfault is encountered, nothing
special needs to be done; the test will fail if a signal is not caught.

In both cases, make sure that you are configuring the suite runner to use
fork. This should be the case by default, but it can be explicitly set
using srunner_set_fork_status()
<https://libcheck.github.io/check/doc/doxygen/html/check_8h.html#a0085fc05eba2e9048822aa93aeebc2d2>
.

- Branden




On Tue, Jun 14, 2016 at 11:37 AM, JIN, ZHEMING <ji...@em...> wrote:

> Hi
>
>
>
> How can I catch the segfault error when malloc(0) happens in C check ?
>
> On the CentOS, malloc(0) doesn’t return NULL.
>
>
>
> Thanks
>
>
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