From dc7608da973291aafb7a58f33eb65dc3389c123d Mon Sep 17 00:00:00 2001
From: Asherah Connor <ashe@kivikakk.ee>
Date: Thu, 27 Aug 2020 11:17:03 +1000
Subject: [PATCH] ensure main return type is not i8

Avoids a compile error from start.zig:

	/home/kivikakk/zig/build/lib/zig/std/start.zig:265:28: error:
	expected type 'u8', found 'i8'
			    return result;
				   ^
	/home/kivikakk/zig/build/lib/zig/std/start.zig:265:28: note:
	unsigned 8-bit int cannot represent all possible signed 8-bit
	values
			    return result;
---
 lib/std/start.zig | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/std/start.zig b/lib/std/start.zig
index 2b1bae060e..8e443a7c77 100644
--- a/lib/std/start.zig
+++ b/lib/std/start.zig
@@ -248,7 +248,7 @@ pub fn callMain() u8 {
             return 0;
         },
         .Int => |info| {
-            if (info.bits != 8) {
+            if (info.bits != 8 or info.is_signed) {
                 @compileError(bad_main_ret);
             }
             return root.main();
@@ -264,7 +264,7 @@ pub fn callMain() u8 {
             switch (@typeInfo(@TypeOf(result))) {
                 .Void => return 0,
                 .Int => |info| {
-                    if (info.bits != 8) {
+                    if (info.bits != 8 or info.is_signed) {
                         @compileError(bad_main_ret);
                     }
                     return result;