https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108675
Bug ID: 108675
Summary: FAIL: gcc.c-torture/execute/builtins/*printf.c when
stdio.h includes definitions
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: testsuite
Assignee: unassigned at gcc dot gnu.org
Reporter: nightstrike at gmail dot com
Target Milestone: ---
Failing tests:
gcc.c-torture/execute/builtins/printf.c
gcc.c-torture/execute/builtins/fprintf.c
gcc.c-torture/execute/builtins/sprintf.c
On mingw-w64, the gcc.c-torture/execute/builtins/*printf.c tests fail. We
include definitions of various functions in stdio.h instead of just
declarations, leading to redefinition errors. For example,
https://sourceforge.net/p/mingw-w64/mingw-w64/ci/master/tree/mingw-w64-headers/crt/stdio.h:
__mingw_ovr
__attribute__((__format__ (gnu_printf, 2, 3))) __MINGW_ATTRIB_NONNULL(2)
int fprintf (FILE *__stream, const char *__format, ...)
{
int __retval;
__builtin_va_list __local_argv; __builtin_va_start( __local_argv, __format );
__retval = __mingw_vfprintf( __stream, __format, __local_argv );
__builtin_va_end( __local_argv );
return __retval;
}
This causes the test to fail to compile at all optimization levels:
gcc.c-torture/execute/builtins/lib/fprintf.c:8:1: error: redefinition of
'fprintf'
mingw13/x86_64-w64-mingw32/include/stdio.h:357:5: note: previous definition of
'fprintf' with type 'int(FILE *, const char *, ...)' {aka 'int(struct _iobuf *,
const char *, ...)'}
The tests were originally added in r38065, r38788, and r48335. They were later
moved in r84044 and tweaked a bit.
Is there a better way to verify that the builtin was used instead of mingw
version?
