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From 64e5c63ef72ab97ecae6d43845634aa34da0b426 Mon Sep 17 00:00:00 2001
From: Yureka <yuka@yuka.dev>
Date: Sun, 11 Jan 2026 16:49:07 +0100
Subject: [PATCH] getopt.{c,h}: Do not use unspecified signatures
Unspecified signatures no longer work with C23, and the GNU getopt signature matches the one specified by POSIX
---
src/getopt.c | 2 +-
src/getopt.h | 7 -------
2 files changed, 1 insertion(+), 8 deletions(-)
diff --git a/src/getopt.c b/src/getopt.c
index 9bafa45..c268441 100644
--- a/src/getopt.c
+++ b/src/getopt.c
@@ -209,7 +209,7 @@ static char *posixly_correct;
whose names are inconsistent. */
#ifndef getenv
-extern char *getenv ();
+extern char *getenv (const char *);
#endif
static char *
diff --git a/src/getopt.h b/src/getopt.h
index a1b8dd6..0aea224 100644
--- a/src/getopt.h
+++ b/src/getopt.h
@@ -138,14 +138,7 @@ struct option
`getopt'. */
#if (defined __STDC__ && __STDC__) || defined __cplusplus
-# ifdef __GNU_LIBRARY__
-/* Many other libraries have conflicting prototypes for getopt, with
- differences in the consts, in stdlib.h. To avoid compilation
- errors, only prototype getopt for the GNU C library. */
extern int getopt (int __argc, char *const *__argv, const char *__shortopts);
-# else /* not __GNU_LIBRARY__ */
-extern int getopt ();
-# endif /* __GNU_LIBRARY__ */
# ifndef __need_getopt
extern int getopt_long (int __argc, char *const *__argv, const char *__shortopts,
--
2.52.0
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