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5f3b183d19
* stdlib/Makefile (tst-atexit, tst-at_quick_exit): New tests. (tst-cxa_atexit, tst-on_exit): Likewise. * stdlib/Makefile (tests): Add tst-atexit, tst-at_quick_exit, tst-cxa_atexit, and tst-on_exit. * stdlib/tst-atexit-common.c: New file. * stdlib/tst-atexit.c: New file. * stdlib/tst-at_quick_exit.c: New file. * stdlib/tst-cxa_atexit.c: New file. * stdlib/tst-on_exit.c: New file.
96 lines
2.3 KiB
C
96 lines
2.3 KiB
C
/* Helper file for tst-{atexit,at_quick_exit,cxa_atexit,on_exit}.
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Copyright (C) 2017 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#define MAX_ATEXIT 20 /* Large enough for current set of invocations. */
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static char crumbs[MAX_ATEXIT];
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static int next_slot = 0;
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static void
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fn0 (void)
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{
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crumbs[next_slot++] = '0';
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}
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static void
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fn1 (void)
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{
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crumbs[next_slot++] = '1';
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}
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static void
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fn2 (void)
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{
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crumbs[next_slot++] = '2';
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ATEXIT (fn1);
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}
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static void
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fn3 (void)
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{
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crumbs[next_slot++] = '3';
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ATEXIT (fn2);
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ATEXIT (fn0);
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}
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static void
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fn_final (void)
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{
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/* Arbitrary sequence matching current registrations. */
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const char expected[] = "3021121130211";
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if (strcmp (crumbs, expected) == 0)
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_exit (0);
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printf ("crumbs: %s\n", crumbs);
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printf ("expected: %s\n", expected);
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_exit (1);
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}
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/* This is currently just a basic test to verify that exit handlers execute
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in LIFO order, even when the handlers register additional new handlers.
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TODO: Additional tests that we should do:
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1. POSIX says we need to support at least ATEXIT_MAX
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2. Verify that fork'd child inherit the registrations of the parent.
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3. ... */
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static int
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do_test (void)
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{
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/* Register this first so it can verify expected order of the rest. */
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ATEXIT (fn_final);
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ATEXIT (fn1);
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ATEXIT (fn3);
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ATEXIT (fn1);
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ATEXIT (fn2);
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ATEXIT (fn1);
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ATEXIT (fn3);
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EXIT (2); /* If we see this exit code, fn_final must have not worked. */
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}
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#define TEST_FUNCTION do_test
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#include <support/test-driver.c>
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