1 | /* Test for the long double redirections in error* functions |
2 | when they are returned as function pointer BZ #29033. |
3 | Copyright (C) 2023-2024 Free Software Foundation, Inc. |
4 | This file is part of the GNU C Library. |
5 | |
6 | The GNU C Library is free software; you can redistribute it and/or |
7 | modify it under the terms of the GNU Lesser General Public |
8 | License as published by the Free Software Foundation; either |
9 | version 2.1 of the License, or (at your option) any later version. |
10 | |
11 | The GNU C Library is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
14 | Lesser General Public License for more details. |
15 | |
16 | You should have received a copy of the GNU Lesser General Public |
17 | License along with the GNU C Library; if not, see |
18 | <https://www.gnu.org/licenses/>. */ |
19 | |
20 | #include <err.h> |
21 | #include <errno.h> |
22 | #include <error.h> |
23 | #include <stdarg.h> |
24 | #include <string.h> |
25 | #include <stdlib.h> |
26 | #include <dlfcn.h> |
27 | #include <sys/cdefs.h> |
28 | |
29 | #include <support/capture_subprocess.h> |
30 | #include <support/check.h> |
31 | #include <support/xdlfcn.h> |
32 | |
33 | #if __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI == 1 |
34 | # define LDBL_NAME(alias) "__" #alias "ieee128" |
35 | #elif defined __LONG_DOUBLE_MATH_OPTIONAL && defined __NO_LONG_DOUBLE_MATH |
36 | # define LDBL_NAME(alias) "__nldbl_" #alias |
37 | #else |
38 | # define LDBL_NAME(alias) #alias |
39 | #endif |
40 | |
41 | typedef void (*error_func_t) (int, int, const char*, ...); |
42 | typedef void (*error_at_line_func_t) (int, int, const char*, |
43 | unsigned int, const char*, ...); |
44 | |
45 | error_func_t |
46 | __attribute__ ((noinline)) |
47 | get_error_func (void) { |
48 | return &error; |
49 | } |
50 | |
51 | error_at_line_func_t |
52 | __attribute__ ((noinline)) |
53 | get_error_at_line_func (void) { |
54 | return &error_at_line; |
55 | } |
56 | |
57 | static int |
58 | do_test (void) |
59 | { |
60 | /* Prepare the symbol names as per long double standards */ |
61 | char *error_sym = NULL; |
62 | char *error_sym_at_line = NULL; |
63 | error_sym = (char *) LDBL_NAME(error); |
64 | error_sym_at_line = (char *) LDBL_NAME(error_at_line); |
65 | TEST_VERIFY (error_sym != NULL && error_sym_at_line != NULL); |
66 | /* Map the function pointers to appropriate redirected error symbols */ |
67 | error_func_t fp; |
68 | fp = get_error_func (); |
69 | if (fp != xdlsym (RTLD_DEFAULT, symbol: error_sym)) |
70 | { |
71 | printf (format: "FAIL: fp=%p error_sym=%p\n" , fp, error_sym); |
72 | return 1; |
73 | } |
74 | |
75 | error_at_line_func_t fpat; |
76 | fpat = get_error_at_line_func (); |
77 | if (fpat != xdlsym (RTLD_DEFAULT, symbol: error_sym_at_line)) |
78 | { |
79 | printf (format: "FAIL: fpat=%p error_sym_at_line=%p\n" , |
80 | fpat, error_sym_at_line); |
81 | return 1; |
82 | } |
83 | |
84 | return 0; |
85 | } |
86 | |
87 | #include <support/test-driver.c> |
88 | |