e6e2424390
GCC mainline has recently added warn_unused_result attributes to some malloc-like built-in functions, where glibc previously had them in its headers only for __USE_FORTIFY_LEVEL > 0. This results in those attributes being newly in effect for building the glibc testsuite, so resulting in new warnings that break the build where tests deliberately call such functions and ignore the result. Thus patch duly adds calls to DIAG_* macros around those calls to disable the warning. Tested with build-many-glibcs.py for aarch64-linux-gnu. * malloc/tst-calloc.c: Include <libc-diag.h>. (null_test): Ignore -Wunused-result around calls to calloc. * malloc/tst-mallocfork.c: Include <libc-diag.h>. (do_test): Ignore -Wunused-result around call to malloc.
58 lines
1.2 KiB
C
58 lines
1.2 KiB
C
/* Derived from the test case in
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https://sourceware.org/bugzilla/show_bug.cgi?id=838. */
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#include <assert.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <libc-diag.h>
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static void
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sig_handler (int signum)
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{
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pid_t child = fork ();
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if (child == 0)
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exit (0);
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TEMP_FAILURE_RETRY (waitpid (child, NULL, 0));
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}
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static int
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do_test (void)
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{
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pid_t parent = getpid ();
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struct sigaction action = { .sa_handler = sig_handler };
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sigemptyset (&action.sa_mask);
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DIAG_PUSH_NEEDS_COMMENT;
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DIAG_IGNORE_NEEDS_COMMENT (10, "-Wunused-result");
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/* The result of malloc is deliberately ignored, so do not warn
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about that. */
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malloc (sizeof (int));
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DIAG_POP_NEEDS_COMMENT;
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if (sigaction (SIGALRM, &action, NULL) != 0)
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{
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puts ("sigaction failed");
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return 1;
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}
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/* Create a child that sends the signal to be caught. */
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pid_t child = fork ();
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if (child == 0)
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{
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if (kill (parent, SIGALRM) == -1)
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perror ("kill");
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exit (0);
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}
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TEMP_FAILURE_RETRY (waitpid (child, NULL, 0));
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return 0;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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