From: Steve Peters <steve@fisharerojo.org>
Date: Sat, 11 Feb 2006 06:14:02 +0000 (+0000)
Subject: Die when integer overflow condition is detected in division under
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=ece1bcefc6e1d5c666cb173e3db4fb5c6663a8b9;p=p5sagit%2Fp5-mst-13.2.git

Die when integer overflow condition is detected in division under
C<use integer>.  Hopefully fixes RT #38485.

p4raw-id: //depot/perl@27155
---

diff --git a/pp.c b/pp.c
index 3aaad3b..83e0463 100644
--- a/pp.c
+++ b/pp.c
@@ -2423,12 +2423,16 @@ PP(pp_i_multiply)
 
 PP(pp_i_divide)
 {
+    IV num;
     dVAR; dSP; dATARGET; tryAMAGICbin(div,opASSIGN);
     {
       dPOPiv;
       if (value == 0)
-	DIE(aTHX_ "Illegal division by zero");
-      value = POPi / value;
+	  DIE(aTHX_ "Illegal division by zero");
+      num = POPi;
+      if (num == IV_MIN && value == -1)
+          DIE(aTHX_ "Integer overflow in division");
+      value = num / value;
       PUSHi( value );
       RETURN;
     }