diff --git a/pcre-8.33-RC1-Fix-pcretest-crash-with-a-data-line-longer-than-6553.patch b/pcre-8.33-RC1-Fix-pcretest-crash-with-a-data-line-longer-than-6553.patch
new file mode 100644
index 0000000..f2d4865
--- /dev/null
+++ b/pcre-8.33-RC1-Fix-pcretest-crash-with-a-data-line-longer-than-6553.patch
@@ -0,0 +1,54 @@
+From bf2c63fda75cca4ab3006b6ccdf0f18fafe4fca5 Mon Sep 17 00:00:00 2001
+From: ph10 <ph10@2f5784b3-3f2a-0410-8824-cb99058d5e15>
+Date: Fri, 10 May 2013 16:22:40 +0000
+Subject: [PATCH] Fix pcretest crash with a data line longer than 65536 bytes.
+
+git-svn-id: svn://vcs.exim.org/pcre/code/trunk@1327 2f5784b3-3f2a-0410-8824-cb99058d5e15
+
+Petr Pisar: Port to 8.31-RC1
+ 
+diff --git a/pcretest.c b/pcretest.c
+index 6ef3252..25f3853 100644
+--- a/pcretest.c
++++ b/pcretest.c
+@@ -4411,7 +4411,8 @@ while (!done)
+ 
+ #ifndef NOUTF
+     /* Check that the data is well-formed UTF-8 if we're in UTF mode. To create
+-       invalid input to pcre_exec, you must use \x?? or \x{} sequences. */
++    invalid input to pcre_exec, you must use \x?? or \x{} sequences. */
++        
+     if (use_utf)
+       {
+       pcre_uint8 *q;
+@@ -4429,21 +4430,23 @@ while (!done)
+ 
+ #ifdef SUPPORT_VALGRIND
+     /* Mark the dbuffer as addressable but undefined again. */
++     
+     if (dbuffer != NULL)
+       {
+       VALGRIND_MAKE_MEM_UNDEFINED(dbuffer, dbuffer_size * CHAR_SIZE);
+       }
+ #endif
+ 
+-    /* Allocate a buffer to hold the data line. len+1 is an upper bound on
+-       the number of pcre_uchar units that will be needed. */
+-    if (dbuffer == NULL || (size_t)len >= dbuffer_size)
++    /* Allocate a buffer to hold the data line; len+1 is an upper bound on
++    the number of pcre_uchar units that will be needed. */
++        
++    while (dbuffer == NULL || (size_t)len >= dbuffer_size)
+       {
+       dbuffer_size *= 2;
+       dbuffer = (pcre_uint8 *)realloc(dbuffer, dbuffer_size * CHAR_SIZE);
+       if (dbuffer == NULL)
+         {
+-        fprintf(stderr, "pcretest: malloc(%d) failed\n", (int)dbuffer_size);
++        fprintf(stderr, "pcretest: realloc(%d) failed\n", (int)dbuffer_size);
+         exit(1);
+         }
+       }
+-- 
+1.8.1.4
+
diff --git a/pcre.spec b/pcre.spec
index 5d9bc6c..af7f508 100644
--- a/pcre.spec
+++ b/pcre.spec
@@ -17,6 +17,8 @@ Patch1: pcre-8.32-refused_spelling_terminated.patch
 Patch2: pcre-8.33-RC1-Fix-retrieving-PCRE_INFO_MATCHLIMIT-and-PCRE_INFO_RE.patch
 # Fix pcregrep on empty line, in upstream after 8.33-RC1
 Patch3: pcre-8.33-RC1-Fix-pcregrep-so-that-it-can-find-empty-lines.patch
+# Grow buffer in pcretest properly, in upstream after 8.33-RC1
+Patch4: pcre-8.33-RC1-Fix-pcretest-crash-with-a-data-line-longer-than-6553.patch
 BuildRequires: readline-devel
 # New libtool to get rid of rpath
 BuildRequires: autoconf, automake, libtool
@@ -60,6 +62,7 @@ Utilities demonstrating PCRE capabilities like pcregrep or pcretest.
 %patch1 -p1 -b .terminated_typos
 %patch2 -p1 -b .fullinfo
 %patch3 -p1 -b .pcregrep_empty_line
+%patch4 -p1 -b .pcretest_grow_buffer
 # Because of rpath patch
 libtoolize --copy --force && autoreconf -vif
 # One contributor's name is non-UTF-8
@@ -125,6 +128,7 @@ make check
 %changelog
 * Mon May 13 2013 Petr Pisar <ppisar@redhat.com> - 8.33-0.2.RC1
 - Fix bad handling of empty lines in pcregrep tool (bug #961789)
+- Fix possible pcretest crash with a data line longer than 65536 bytes
 
 * Thu May 02 2013 Petr Pisar <ppisar@redhat.com> - 8.33-0.1.RC1
 - 8.33-RC1 bump