From: Ian Lance Taylor <ian@gcc.gnu.org>
Date: Fri, 11 Oct 2013 00:46:57 +0000 (+0000)
Subject: runtime: Report len out of range for large len when making slice.
X-Git-Tag: releases/gcc-4.9.0~3605
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=301616f7ffc12a419c7fd12f79d058847f49ecd0;p=thirdparty%2Fgcc.git

runtime: Report len out of range for large len when making slice.

From-SVN: r203401
---

diff --git a/libgo/runtime/go-make-slice.c b/libgo/runtime/go-make-slice.c
index 591ab37e0c69..f08cb012dc83 100644
--- a/libgo/runtime/go-make-slice.c
+++ b/libgo/runtime/go-make-slice.c
@@ -34,7 +34,10 @@ __go_make_slice2 (const struct __go_type_descriptor *td, uintptr_t len,
   std = (const struct __go_slice_type *) td;
 
   ilen = (intgo) len;
-  if (ilen < 0 || (uintptr_t) ilen != len)
+  if (ilen < 0
+      || (uintptr_t) ilen != len
+      || (std->__element_type->__size > 0
+	  && len > MaxMem / std->__element_type->__size))
     runtime_panicstring ("makeslice: len out of range");
 
   icap = (intgo) cap;