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stdio: Fix test-printf-ldbl-compat.c build with ubsan 

On powercp64le with --enable-ubsan the build fails with:

In file included from ../include/bits/stdio2.h:1,
                 from ../libio/stdio.h:967,
                 from ../include/stdio.h:14,
                 from ../sysdeps/ieee754/ldbl-128ibm-compat/test-printf-ldbl-compat.c:21,
                 from ../sysdeps/ieee754/ldbl-128ibm-compat/test-printf-ieee128.c:1:
In function ‘vfprintf’,
    inlined from ‘do_test_call_varg’ at ../sysdeps/ieee754/ldbl-128ibm-compat/test-printf-ldbl-compat.c:56:3:
../libio/bits/stdio2.h:166:10: error: null format string [-Werror=format-overflow=]
  166 |   return __vfprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt, __ap);
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function ‘vsnprintf’,
    inlined from ‘do_test_call_varg’ at ../sysdeps/ieee754/ldbl-128ibm-compat/test-printf-ldbl-compat.c:68:3:
../libio/bits/stdio2.h💯10: error: null format string [-Werror=format-truncation=]
  100 |   return __builtin___vsnprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  101 |                                     __glibc_objsize (__s), __fmt, __ap);
      |                                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function ‘fprintf’,
    inlined from ‘do_test_call_rarg.constprop’ at ../sysdeps/ieee754/ldbl-128ibm-compat/test-printf-ldbl-compat.c:104:3:
../libio/bits/stdio2.h:111:10: error: null format string [-Werror=format-overflow=]
  111 |   return __fprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt,
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  112 |                         __va_arg_pack ());
      |                         ~~~~~~~~~~~~~~~~~
In function ‘printf’,
    inlined from ‘do_test_call_rarg.constprop’ at ../sysdeps/ieee754/ldbl-128ibm-compat/test-printf-ldbl-compat.c:108:3:
../libio/bits/stdio2.h:118:10: error: null format string [-Werror=format-overflow=]
  118 |   return __printf_chk (__USE_FORTIFY_LEVEL - 1, __fmt, __va_arg_pack ());
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In function ‘snprintf’,
    inlined from ‘do_test_call_rarg.constprop’ at ../sysdeps/ieee754/ldbl-128ibm-compat/test-printf-ldbl-compat.c:112:3:
../libio/bits/stdio2.h:68:10: error: null format string [-Werror=format-truncation=]
   68 |   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   69 |                                    __glibc_objsize (__s), __fmt,
      |                                    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   70 |                                    __va_arg_pack ());
      |                                    ~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
This commit is contained in:
Adhemerval Zanella 2025-04-24 17:15:39 -03:00
parent 319de14379
commit 967c9fd3eb
1 changed files with 2 additions and 0 deletions
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2
sysdeps/ieee754/ldbl-128ibm-compat/test-printf-ldbl-compat.c
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@ -25,6 +25,7 @@
#include <support/check.h> #include <support/check.h>
static void static void
__attribute_disable_usbsan__
do_test_call_varg (FILE *stream, const char *format, ...) do_test_call_varg (FILE *stream, const char *format, ...)
{ {
char *buffer = NULL; char *buffer = NULL;
@ -79,6 +80,7 @@ do_test_call_varg (FILE *stream, const char *format, ...)
} }
static void static void
__attribute_disable_usbsan__
do_test_call_rarg (FILE *stream, const char *format, long double ld, double d) do_test_call_rarg (FILE *stream, const char *format, long double ld, double d)
{ {
char *buffer = NULL; char *buffer = NULL;