diff --git a/pcre-8.41-fix_stack_estimator.patch b/pcre-8.41-fix_stack_estimator.patch
deleted file mode 100644
index 085d027..0000000
--- a/pcre-8.41-fix_stack_estimator.patch
+++ /dev/null
@@ -1,24 +0,0 @@
-Fix recursion stack estimator
-
-Due to inlining match() by recent GCC, the stack estimator reported 4-bytes
-stack consumption.
-
-Author: Sergei Golubchik <vuvova@gmail.com>
-<https://bugs.exim.org/show_bug.cgi?id=2173>
-
-diff --git a/pcre/pcre_exec.c b/pcre/pcre_exec.c
---- a/pcre_exec.c
-+++ b/pcre_exec.c
-@@ -509,6 +509,12 @@
-                  (e.g. stopped by repeated call or recursion limit)
- */
- 
-+#ifdef __GNUC__
-+static int
-+match(REGISTER PCRE_PUCHAR eptr, REGISTER const pcre_uchar *ecode,
-+  PCRE_PUCHAR mstart, int offset_top, match_data *md, eptrblock *eptrb,
-+  unsigned int rdepth) __attribute__((noinline,noclone));
-+#endif
- static int
- match(REGISTER PCRE_PUCHAR eptr, REGISTER const pcre_uchar *ecode,
-   PCRE_PUCHAR mstart, int offset_top, match_data *md, eptrblock *eptrb,
diff --git a/pcre.spec b/pcre.spec
index 29022bc..349b592 100644
--- a/pcre.spec
+++ b/pcre.spec
@@ -1,6 +1,6 @@
 Name:		pcre
 Version:	8.43
-Release:        4
+Release:        5 
 Summary:	Perl Compatible Regular Expressions
 ## Source package only:
 # INSTALL:                  FSFAP
@@ -26,7 +26,6 @@ Summary:	Perl Compatible Regular Expressions
 License:	BSD
 URL:		http://www.pcre.org/
 Source0:	https://ftp.pcre.org/pub/pcre/%{name}-%{version}.tar.bz2
-Patch0:     	pcre-8.41-fix_stack_estimator.patch
 BuildRequires:	readline-devel autoconf automake coreutils	
 BuildRequires:	gcc git gcc-c++ glibc-common libtool make
 BuildRequires:	bash diffutils grep
@@ -109,6 +108,12 @@ make check VERBOSE=yes
 %{_mandir}/man3/*
 
 %changelog
+* Sat Jan 11 2020 openEuler Buildteam <buildteam@openeuler.org> - 8.43-5
+- Type: enhancement
+- ID: NA
+- SUG: NA
+- DESC: remove unnecessary files
+
 * Mon Nov 11 2019 shenyangyang <shenyangyang4@huawei.com> - 8.43-4
 - Type: enhancement
 - ID: NA