commit 99c48fe9974b8d70ca33674658a3da722b0d6466
author Bram Moolenaar <Bram@vim.org> Sun Jun 05 22:05:19 2022 +0100
committer Bram Moolenaar <Bram@vim.org> Sun Jun 05 22:05:19 2022 +0100
tree dffbad61a62ddf128e2c258fc24bd96c5ccaf4bb
parent de1d7343794a950bd624043901ce7b3caca3c49b

patch 8.2.5061: C89 requires signal handlers to return void

Problem:    C89 requires signal handlers to return void.
Solution:   Drop RETSIGTYPE and hard-code a void return value.

src/osdef1.h.in

diff --git a/src/osdef1.h.in b/src/osdef1.h.in
index 4fb3409..e8204b0 100644
--- a/src/osdef1.h.in
+++ b/src/osdef1.h.in
@@ -105,9 +105,9 @@
 extern int	toupper(int);
 extern int	tolower(int);
 
-extern RETSIGTYPE (*signal(int, RETSIGTYPE (*func) SIGPROTOARG)) SIGPROTOARG;
+extern void (*signal(int, void (*func) SIGPROTOARG)) SIGPROTOARG;
 #ifdef HAVE_SIGSET
-extern RETSIGTYPE (*sigset(int, RETSIGTYPE (*func) SIGPROTOARG)) SIGPROTOARG;
+extern void (*sigset(int, void (*func) SIGPROTOARG)) SIGPROTOARG;
 #endif
 
 #if defined(HAVE_SETJMP_H)