On Sun, Oct 22, 2023 at 12:47 AM Florian Weimer <fwei...@redhat.com> wrote: > > Current glibc headers only declare fputs_unlocked for _GNU_SOURCE. > Defining the macro avoids an implicit function declaration.
This does not help targets that don't use glibc though. Note for builtins testsuite there is a lib-fputs.c file which will define a fputs_unlock which is how it will link even if the libc does not define a fputs_unlock. Thanks, Andrew Pinski > > gcc/testsuite/ > > * gcc.c-torture/execute/builtins/fputs.c (_GNU_SOURCE): > Define. > > --- > gcc/testsuite/gcc.c-torture/execute/builtins/fputs.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/gcc/testsuite/gcc.c-torture/execute/builtins/fputs.c > b/gcc/testsuite/gcc.c-torture/execute/builtins/fputs.c > index 93fa9736449..13e30724355 100644 > --- a/gcc/testsuite/gcc.c-torture/execute/builtins/fputs.c > +++ b/gcc/testsuite/gcc.c-torture/execute/builtins/fputs.c > @@ -5,6 +5,7 @@ > > Written by Kaveh R. Ghazi, 10/30/2000. */ > > +#define _GNU_SOURCE /* For fputs_unlocked. */ > #include <stdio.h> > extern void abort(void); > >
