diff --git a/perl-5.18.2-overflow.diff b/perl-5.18.2-overflow.diff
new file mode 100644
index 0000000..f4ab898
--- /dev/null
+++ b/perl-5.18.2-overflow.diff
@@ -0,0 +1,11 @@
+--- sv.c.bak	2014-03-24 15:11:48.007595042 +0100
++++ sv.c	2014-03-25 11:57:41.154752451 +0100
+@@ -2008,7 +2008,7 @@ S_sv_2iuv_common(pTHX_ SV *const sv)
+ 	    if (SvNVX(sv) == (NV) SvIVX(sv)
+ #ifndef NV_PRESERVES_UV
+ 		&& (((UV)1 << NV_PRESERVES_UV_BITS) >
+-		    (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvIVX(sv)))
++		    (UV)(SvIVX(sv) > 0 ? SvIVX(sv) : -SvUVX(sv)))
+ 		/* Don't flag it as "accurately an integer" if the number
+ 		   came from a (by definition imprecise) NV operation, and
+ 		   we're outside the range of NV integer precision */
diff --git a/perl.changes b/perl.changes
index f1fab00..0fbbb4b 100644
--- a/perl.changes
+++ b/perl.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Tue Mar 25 11:06:56 UTC 2014 - rguenther@suse.com
+
+- perl-5.18.2-overflow.diff: avoid undefined overflow in S_sv_2iuv_common
+
 -------------------------------------------------------------------
 Sat Jan 18 19:08:31 UTC 2014 - schwab@suse.de
 
diff --git a/perl.spec b/perl.spec
index 5919a55..004b520 100644
--- a/perl.spec
+++ b/perl.spec
@@ -41,6 +41,7 @@ Patch7:         perl-db6.diff
 Patch8:         skip_time_hires.patch
 Patch9:         perl-incfix.diff
 Patch10:        perl-threads.t-timeout.diff
+Patch11:        perl-5.18.2-overflow.diff
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 PreReq:         perl-base = %version
 #PreReq:         %fillup_prereq
@@ -176,6 +177,7 @@ cp -p %{S:3} .
 %endif
 %patch9
 %patch10 -p1
+%patch11
 
 %build
 cp -a lib savelib