https://bugs.gentoo.org/944352
--- a/fault.c
+++ b/fault.c
@@ -52,7 +52,7 @@
 # endif
 #endif
 
-static	void (*psig0_func)() = SIG_ERR;	/* previous signal handler for signal 0 */
+static	void (*psig0_func)(int) = SIG_ERR;	/* previous signal handler for signal 0 */
 static	char sigsegv_stack[SIGSTKSZ];
 
 static BOOL sleeping = 0;
@@ -98,7 +98,7 @@
 };
 
 void (*(
-sigval[MAXTRAP]))() =
+sigval[MAXTRAP]))(int) =
 {
 	0,
 	0,	/* 	done, 	   hangup */
@@ -522,7 +522,7 @@
 void 
 init_sigval(void)
 {
-	extern void	(*(sigval[]))();
+	extern void	(*(sigval[]))(int);
 
 #ifdef	SIGHUP
 	if (SIGHUP < MAXTRAP)
@@ -566,7 +566,7 @@
 #endif
 #ifdef	SIGSEGV
 	if (SIGSEGV < MAXTRAP)
-		sigval[SIGSEGV] = sigsegv;
+		sigval[SIGSEGV] = (void (*)(int))sigsegv;
 #endif
 #ifdef	SIGEMT
 	if (SIGEMT < MAXTRAP)
--- heirloom-sh-050706/test.c.orig
+++ heirloom-sh-050706/test.c
@@ -268,7 +268,7 @@
 filtyp(const unsigned char *f, int field)
 {
 	struct stat statb;
-	int (*statf)() = (field == S_IFLNK) ? lstat : stat;
+	int (*statf)(const char *, struct stat *) = (field == S_IFLNK) ? lstat : stat;
 
 	if ((*statf)(f, &statb) < 0)
 		return(0);