| From 7ccfea413216bddd988823acf4e93421ea0f7f9f Mon Sep 17 00:00:00 2001 |
| From: Khem Raj <raj.khem@gmail.com> |
| Date: Tue, 16 Aug 2022 18:35:45 -0700 |
| Subject: [PATCH] specify void prototype for functions with no parameters |
| |
| Compilers defaulting to C99 flag such functions as warning which fails |
| to compile when using -Werror |
| |
| Fixes |
| error: a function declaration without a prototype is deprecated in all versions of C [-Werror,-Wstrict-prototypes] |
| |
| Upstream-Status: Submitted [https://lists.gnu.org/archive/html/autoconf-patches/2022-08/msg00003.html] |
| Signed-off-by: Khem Raj <raj.khem@gmail.com> |
| --- |
| lib/autoconf/c.m4 | 4 ++-- |
| 1 file changed, 2 insertions(+), 2 deletions(-) |
| |
| --- a/lib/autoconf/c.m4 |
| +++ b/lib/autoconf/c.m4 |
| @@ -127,7 +127,7 @@ m4_if([$2], [main], , |
| [/* Override any GCC internal prototype to avoid an error. |
| Use char because int might match the return type of a GCC |
| builtin and then its argument prototype would still apply. */ |
| -char $2 ();])], [return $2 ();])]) |
| +char $2 (void);])], [return $2 ();])]) |
| |
| |
| # AC_LANG_FUNC_LINK_TRY(C)(FUNCTION) |
| @@ -151,7 +151,7 @@ m4_define([AC_LANG_FUNC_LINK_TRY(C)], |
| #define $1 innocuous_$1 |
| |
| /* System header to define __stub macros and hopefully few prototypes, |
| - which can conflict with char $1 (); below. */ |
| + which can conflict with char $1 (void); below. */ |
| |
| #include <limits.h> |
| #undef $1 |
| @@ -162,7 +162,7 @@ m4_define([AC_LANG_FUNC_LINK_TRY(C)], |
| #ifdef __cplusplus |
| extern "C" |
| #endif |
| -char $1 (); |
| +char $1 (void); |
| /* The GNU C library defines this for functions which it implements |
| to always fail with ENOSYS. Some functions are actually named |
| something starting with __ and the normal name is an alias. */ |
| @@ -252,7 +252,7 @@ dnl other built-in extern "C" functions, |
| dnl when it actually happens. |
| [AC_LANG_PROGRAM([[$1 |
| namespace conftest { |
| - extern "C" int $2 (); |
| + extern "C" int $2 (void); |
| }]], |
| [[return conftest::$2 ();]])]) |
| |
| @@ -2457,7 +2457,7 @@ using std::strcmp; |
| |
| namespace { |
| |
| -void test_exception_syntax() |
| +void test_exception_syntax(void) |
| { |
| try { |
| throw "test"; |