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/* Test for the long double redirections in error* functions
when they are returned as function pointer BZ #29033.
Copyright (C) 2023-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <err.h>
#include <errno.h>
#include <error.h>
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include <dlfcn.h>
#include <sys/cdefs.h>
#include <support/capture_subprocess.h>
#include <support/check.h>
#include <support/xdlfcn.h>
#if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1
# define LDBL_NAME(alias) "__" #alias "ieee128"
#elif defined __LONG_DOUBLE_MATH_OPTIONAL && defined __NO_LONG_DOUBLE_MATH
# define LDBL_NAME(alias) "__nldbl_" #alias
#else
# define LDBL_NAME(alias) #alias
#endif
typedef void (*error_func_t) (int, int, const char*, ...);
typedef void (*error_at_line_func_t) (int, int, const char*,
unsigned int, const char*, ...);
error_func_t
__attribute__ ((noinline))
get_error_func (void) {
return &error;
}
error_at_line_func_t
__attribute__ ((noinline))
get_error_at_line_func (void) {
return &error_at_line;
}
static int
do_test (void)
{
/* Prepare the symbol names as per long double standards */
char *error_sym = NULL;
char *error_sym_at_line = NULL;
error_sym = (char *) LDBL_NAME(error);
error_sym_at_line = (char *) LDBL_NAME(error_at_line);
TEST_VERIFY (error_sym != NULL && error_sym_at_line != NULL);
/* Map the function pointers to appropriate redirected error symbols */
error_func_t fp;
fp = get_error_func ();
if (fp != xdlsym (RTLD_DEFAULT, error_sym))
{
printf ("FAIL: fp=%p error_sym=%p\n", fp, error_sym);
return 1;
}
error_at_line_func_t fpat;
fpat = get_error_at_line_func ();
if (fpat != xdlsym (RTLD_DEFAULT, error_sym_at_line))
{
printf ("FAIL: fpat=%p error_sym_at_line=%p\n",
fpat, error_sym_at_line);
return 1;
}
return 0;
}
#include <support/test-driver.c>
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