From 3b9c3fd1860ceaa5684d5837455084707a7848c9 Mon Sep 17 00:00:00 2001
From: Michael Matz <matz@suse.de>
Date: Sat, 3 Nov 2018 22:17:20 +0100
Subject: [PATCH] Fix noreturn in main()

ISO C requires 'main' falling through the end without explicit
returns to implicitely return 0 (if declared as returning int).
---
 tccgen.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/tccgen.c b/tccgen.c
index 7fa7e932..dece3745 100644
--- a/tccgen.c
+++ b/tccgen.c
@@ -7118,6 +7118,15 @@ static void gen_function(Sym *sym)
     local_scope = 0;
     rsym = 0;
     block(NULL, NULL, 0);
+    if (!(nocode_wanted & 0x20000000)
+	&& ((func_vt.t & VT_BTYPE) == VT_INT)
+	&& !strcmp (funcname, "main"))
+      {
+	nocode_wanted = 0;
+	vpushi(0);
+	gen_assign_cast(&func_vt);
+	gfunc_return(&func_vt);
+      }
     nocode_wanted = 0;
     gsym(rsym);
     gfunc_epilog();