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88 lines
2.6 KiB
C
88 lines
2.6 KiB
C
/* Test for the long double redirections in error* functions
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when they are returned as function pointer BZ #29033.
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Copyright (C) 2023-2025 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 <err.h>
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#include <errno.h>
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#include <error.h>
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#include <stdarg.h>
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#include <string.h>
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#include <stdlib.h>
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#include <dlfcn.h>
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#include <sys/cdefs.h>
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#include <support/capture_subprocess.h>
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#include <support/check.h>
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#include <support/xdlfcn.h>
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#if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
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# define LDBL_NAME(alias) "__" #alias "ieee128"
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#elif defined __LONG_DOUBLE_MATH_OPTIONAL && defined __NO_LONG_DOUBLE_MATH
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# define LDBL_NAME(alias) "__nldbl_" #alias
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#else
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# define LDBL_NAME(alias) #alias
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#endif
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typedef void (*error_func_t) (int, int, const char*, ...);
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typedef void (*error_at_line_func_t) (int, int, const char*,
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unsigned int, const char*, ...);
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error_func_t
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__attribute__ ((noinline))
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get_error_func (void) {
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return &error;
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}
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error_at_line_func_t
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__attribute__ ((noinline))
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get_error_at_line_func (void) {
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return &error_at_line;
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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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/* Prepare the symbol names as per long double standards */
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char *error_sym = NULL;
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char *error_sym_at_line = NULL;
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error_sym = (char *) LDBL_NAME(error);
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error_sym_at_line = (char *) LDBL_NAME(error_at_line);
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TEST_VERIFY (error_sym != NULL && error_sym_at_line != NULL);
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/* Map the function pointers to appropriate redirected error symbols */
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error_func_t fp;
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fp = get_error_func ();
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if (fp != xdlsym (RTLD_DEFAULT, error_sym))
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{
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printf ("FAIL: fp=%p error_sym=%p\n", fp, error_sym);
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return 1;
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}
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error_at_line_func_t fpat;
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fpat = get_error_at_line_func ();
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if (fpat != xdlsym (RTLD_DEFAULT, error_sym_at_line))
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{
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printf ("FAIL: fpat=%p error_sym_at_line=%p\n",
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fpat, error_sym_at_line);
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return 1;
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}
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return 0;
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}
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#include <support/test-driver.c>
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