diff --git a/fixes-shift-count-out-of-range.patch b/fixes-shift-count-out-of-range.patch
new file mode 100644
index 0000000000000000000000000000000000000000..7fc4f3b18b43852ca4b5cf222b9b79afdd5b1bf8
--- /dev/null
+++ b/fixes-shift-count-out-of-range.patch
@@ -0,0 +1,93 @@
+From 121144ebabe81006cf0d036356cf5f801cc942aa Mon Sep 17 00:00:00 2001
+From: wu-leilei <wu18740459704@163.com>
+Date: Sun, 25 Jul 2021 17:36:19 +0800
+Subject: [PATCH] fixes-shift-count-out-of-range
+
+---
+ buildsystems/autotools/gtkdocize.in | 55 ++++++++++++++++++++++-------
+ 1 file changed, 43 insertions(+), 12 deletions(-)
+
+diff --git a/buildsystems/autotools/gtkdocize.in b/buildsystems/autotools/gtkdocize.in
+index 83127bf..47d223e 100755
+--- a/buildsystems/autotools/gtkdocize.in
++++ b/buildsystems/autotools/gtkdocize.in
+@@ -25,9 +25,17 @@ args="$*"
+ while test $# -gt 0; do
+   case "$1" in
+   --srcdir)
+-    shift
+-    srcdir="$1"
+-    shift ;;
++    if test $# -gt 1; then
++        shift
++        srcdir="$1"
++        shift
++    elif test $# -eq 1; then
++        srcdir="$1"
++        shift
++    else
++        :
++    fi
++    ;;
+   --srcdir=*)
+     srcdir=`expr "X$1" : '[^=]*=\(.*\)'`
+     shift ;;
+@@ -83,23 +91,46 @@ while test $# -gt 0; do
+     copy=yes
+     shift ;;
+   --docdir)
+-    shift
+-    docdir="$1"
+-    shift ;;
++    if test $# -gt 1; then
++        shift
++        docdir="$1"
++        shift
++    elif test $# -eq 1; then
++        docdir="$1"
++        shift
++    else
++        :
++    fi
++    ;;
+   --docdir=*)
+     docdir=`expr "X$1" : '[^=]*=\(.*\)'`
+     shift ;;
+   --flavour)
+-    shift
+-    flavour="$1"
+-    shift ;;
++    if test $# -gt 1; then
++        shift
++        flavour="$1"
++        shift
++    elif test $# -eq 1; then
++        flavour="$1"
++        shift
++    else
++        :
++    fi
++    ;;
+   --flavour=*)
+     flavour=`expr "X$1" : '[^=]*=\(.*\)'`
+     shift ;;
+   --srcdir)
+-    shift
+-    # srcdir was set earlier.
+-    shift ;;
++    if test $# -gt 1; then
++        shift
++        # srcdir was set earlier
++        shift
++    elif test $# -eq 1; then
++        shift
++    else
++        :
++    fi
++    ;;
+   --srcdir=*)
+     # srcdir was set earlier.
+     shift ;;
+-- 
+2.23.0
+
diff --git a/gtk-doc.spec b/gtk-doc.spec
index 7a81cc5d3f9cc2d607c3c6a2f3ce85bc1602671a..a542ce060a367cf6265a84b46d9ae03700c1376c 100644
--- a/gtk-doc.spec
+++ b/gtk-doc.spec
@@ -3,13 +3,14 @@
 
 Name:           gtk-doc
 Version:        1.33.2
-Release:        2
+Release:        3
 Summary:        Generate API documentation from comments that can be added to C code
 License:        GPLv2+ and GFDL
 URL:            https://www.gtk.org/gtk-doc/
 Source0:        https://download.gnome.org/sources/gtk-doc/1.33/%{name}-%{version}.tar.xz
 Patch0:         fix-fixxref-not-found-file.patch
 Patch1:         fix-mkdb-not-found-file.patch
+Patch2:         fixes-shift-count-out-of-range.patch
 
 BuildRequires:  python3-devel docbook-utils libxslt gettext
 BuildRequires:  itstool yelp-tools docbook-style-xsl gcc gdb
@@ -54,6 +55,9 @@ export PYTHON=%{__python3}
 %{_datadir}/help/*/%{name}-manual/
 
 %changelog
+* Mon Jul 26 2021 wulei <wulei80@huawei.com> - 1.33.2-3
+- fixes shift count out of range
+
 * Sun Jul 25 2021 liyanan <liyanan32@huawei.com> - 1.33.2-2
 - fix not found file