commit 5eb796a369c64f18d55a6ae9b1fa9b35eea237fb

Author: Harmen Stoppels <harmenstoppels@gmail.com>

Date:   Thu Oct 13 16:08:46 2022 +0200

    Fix snprintf configure test for clang 15

    Clang 15 -Wimplicit-int defaults to an error in C99 mode and above.

    A handful of tests have "main(..." and not "int main(..." which caused

    the tests to produce incorrect results.

diff --git a/configure.ac b/configure.ac

index de60a1b1..165c49de 100644

--- a/configure.ac

+++ b/configure.ac

@@ -713,7 +713,7 @@ case "$host" in

 	AC_RUN_IFELSE([AC_LANG_SOURCE([[

 #include <mach-o/dyld.h>

 #include <stdlib.h>

-main() { if (NSVersionOfRunTimeLibrary("System") >= (60 << 16))

+int main() { if (NSVersionOfRunTimeLibrary("System") >= (60 << 16))

 		exit(0);

 	else

 		exit(1);

@@ -4259,7 +4259,7 @@ dnl test snprintf (broken on SCO w/gcc)

 #include <stdlib.h>

 #include <string.h>

 #ifdef HAVE_SNPRINTF

-main()

+int main()

 {

 	char buf[50];

 	char expected_out[50];

@@ -4276,7 +4276,7 @@ main()

 	exit(0);

 }

 #else

-main() { exit(0); }

+int main() { exit(0); }

 #endif

 		]])], [ true ], [ AC_DEFINE([BROKEN_SNPRINTF]) ],

 		AC_MSG_WARN([cross compiling: Assuming working snprintf()])