From 480b5d6440bbbd0b89dabdb2dc957333056aa2a7 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Tue, 22 Nov 2022 15:23:50 +0100
Subject: [PATCH] m4/fp_leading_underscore.m4: Avoid implicit exit function
 declaration

And switch to a new-style function definition.

Fixes build issues with compilers that do not accept implicit function
declarations.
---
 m4/fp_leading_underscore.m4 | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/m4/fp_leading_underscore.m4 b/m4/fp_leading_underscore.m4
index fde57c7625d..939cee3b69f 100644
--- a/m4/fp_leading_underscore.m4
+++ b/m4/fp_leading_underscore.m4
@@ -32,17 +32,15 @@ struct nlist xYzzY1[] = {{"xYzzY1", 0},{0}};
 struct nlist xYzzY2[] = {{"_xYzzY2", 0},{0}};
 #endif
 
-int main(argc, argv)
-int argc;
-char **argv;
+int main(int argc, char **argv)
 {
 #if defined(HAVE_NLIST_H)
     if(nlist(argv[0], xYzzY1) == 0 && xYzzY1[0].n_value != 0)
-        exit(1);
+        return 1;
     if(nlist(argv[0], xYzzY2) == 0 && xYzzY2[0].n_value != 0)
-        exit(0);
+        return 0;
 #endif
-    exit(1);
+    return 1;
 }]])],[fptools_cv_leading_underscore=yes],[fptools_cv_leading_underscore=no],[fptools_cv_leading_underscore=no])
 ;;
 esac]);
-- 
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