Hi Marc,
> Please add
>
> #ifdef DEBUG
> # include <stdio.h>
> #endif
>
> at the beginning of c-stack.c.
>
> When the DEBUG flag is enabled, c-stack.c uses sprintf and without the
> suggested addition gcc complains about an implicit declaration of the
> function sprintf.
Yup. Thanks for the suggestion. Done.
2020-05-09 Bruno Haible <br...@clisp.org>
c-stack: Fix warning when DEBUG is enabled.
Patch suggested by Marc Nieper-Wißkirchen <marc.nieper+...@gmail.com> in
<https://lists.gnu.org/archive/html/bug-gnulib/2020-05/msg00081.html>.
* lib/c-stack.c: Include <stdio.h>.
diff --git a/lib/c-stack.c b/lib/c-stack.c
index 4050d08..e486591 100644
--- a/lib/c-stack.c
+++ b/lib/c-stack.c
@@ -65,6 +65,10 @@ typedef struct sigaltstack stack_t;
#include <unistd.h>
+#if DEBUG
+# include <stdio.h>
+#endif
+
#if HAVE_LIBSIGSEGV
# include <sigsegv.h>
#endif
