From 3735bf6af56ea9e15997dd7e07887666b066472a Mon Sep 17 00:00:00 2001
From: Jason Edmeades <jason@edmeades.me.uk>
Date: Sun, 6 Jan 2013 20:23:53 +0000
Subject: [PATCH] cmd: Avoid division by zero in set /a with %.

---
 programs/cmd/builtins.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/programs/cmd/builtins.c b/programs/cmd/builtins.c
index 45907690c91..0937dcdb58e 100644
--- a/programs/cmd/builtins.c
+++ b/programs/cmd/builtins.c
@@ -3661,6 +3661,7 @@ static int WCMD_reduce(OPSTACK **opstack, VARSTACK **varstack) {
             WCMD_pushnumber(NULL, var2&var1, varstack);
             break;
   case '%': var2 = WCMD_popnumber(varstack);
+            if (var1 == 0) return WCMD_DIVIDEBYZERO;
             WCMD_pushnumber(NULL, var2%var1, varstack);
             break;
   case '^': var2 = WCMD_popnumber(varstack);