Fix-FTBFS-using-GCC-15.patch


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From: Leandro Cunha <leandrocunha016@gmail.com>
Date: Wed, 2 Jul 2025 00:17:30 -0300
Subject: Fix FTBFS using GCC 15

Fix FTBFS with GCC 15: align dlocaltime() declaration and remove redundant localtime()

- Add #include <time.h> to tws.h to define time_t
- Update dlocaltime() prototype in tws.h to match implementation (const time_t *)
- Remove conflicting declaration of localtime() in tws.c

This fixes build errors with GCC 15 due to conflicting types and unknown time_t.
---
 tws.c | 2 --
 tws.h | 4 ++--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/tws.c b/tws.c
index 4e601d5..cdf44c5 100644
--- a/tws.c
+++ b/tws.c
@@ -37,8 +37,6 @@ extern long timezone;
 #include <sys/timeb.h>
 #endif /*SYS5*/
 
-struct tm* localtime();
-
 struct tws *dtwstime()
 {
    time_t clock = 0;
diff --git a/tws.h b/tws.h
index 2d69b2f..7f2a388 100644
--- a/tws.h
+++ b/tws.h
@@ -2,7 +2,7 @@
 
 
 /* Definition of the tws data structure. */
-
+#include <time.h>
 #ifndef _TWS_H_
 #define _TWS_H_ _TWS_H_
 
@@ -33,7 +33,7 @@ struct tws
 
 /* Declarations of routines. */
 
-struct tws *dlocaltime( );
+struct tws *dlocaltime( const time_t * );
         /* dlocaltime( &clock ) turns a time(3) clock value into a tws */
 
 struct tws *dtwstime( );