From 51b74dd2a850e4fee7fb8937f440a35b6856b38e Mon Sep 17 00:00:00 2001
From: Ivan Maidanski <ivmai@mail.ru>
Date: Mon, 30 Jan 2017 06:51:12 +0300
Subject: [PATCH] Fix 'zero-size array is extension' Clang warning in os_dep
 (Linux/x86)

* os_dep.c [I386 && LINUX && SAVE_CALL_CHAIN] (struct frame): Do not
declare fr_arg[NARGS] field if NARGS is zero.
---
 os_dep.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/os_dep.c b/os_dep.c
index 987158a..0fb5ccc 100644
--- a/os_dep.c
+++ b/os_dep.c
@@ -4384,7 +4384,9 @@ GC_API int GC_CALL GC_get_pages_executable(void)
     struct frame {
         struct frame *fr_savfp;
         long    fr_savpc;
-        long    fr_arg[NARGS];  /* All the arguments go here.   */
+#       if NARGS > 0
+          long  fr_arg[NARGS];  /* All the arguments go here.   */
+#       endif
     };
 #endif
 
-- 
2.7.4