mirror of git://sourceware.org/git/glibc.git
57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
/* Test that glob does not overflow the stack with many slashes.
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Copyright (C) 2025-2026 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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<https://www.gnu.org/licenses/>. */
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#include <glob.h>
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#include <string.h>
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#include <support/test-driver.h>
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#include <support/support.h>
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#include <support/check.h>
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#include <sys/resource.h>
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/* Allocation size. */
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#define SIZE 4096
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/* This test would cause a stack overflow on glibc 2.42 and earlier. */
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#define MAX_STACK_SIZE (8 * 1024 * 1024)
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static int
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do_test (void)
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{
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struct rlimit stack_limit = { MAX_STACK_SIZE, MAX_STACK_SIZE };
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TEST_VERIFY_EXIT (setrlimit (RLIMIT_STACK, &stack_limit) == 0);
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glob_t g;
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char *pattern = xmalloc (SIZE);
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/* Test based on BZ #30635. "/////////". */
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memset (pattern, '/', SIZE - 1);
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pattern[SIZE - 1] = '\0';
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TEST_VERIFY (glob (pattern, 0, NULL, &g) == 0);
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globfree (&g);
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/* Test based on BZ #33537. "/*/////sh". */
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pattern[1] = '*';
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pattern[SIZE - 3] = 's';
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pattern[SIZE - 2] = 'h';
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TEST_VERIFY (glob (pattern, 0, NULL, &g) == 0);
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globfree (&g);
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return 0;
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}
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#include <support/test-driver.c>
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