python2:fix excessive memory usage when using regular expressions

bugfix-excessive-memory-usage-when-using-regular-expressions.patch

@@ -0,0 +1,25 @@
+diff --git a/Lib/sre_compile.py b/Lib/sre_compile.py
+index b6689fa..0063845 100644
+--- a/Lib/sre_compile.py
++++ b/Lib/sre_compile.py
+@@ -271,7 +271,7 @@ def _optimize_charset(charset, fixup, fixes, isunicode):
+                     else:
+                         charmap[av] = 1
+                 elif op is RANGE:
+-                    r = range(av[0], av[1]+1)
++                    r = xrange(av[0], av[1]+1)
+                     if fixup:
+                         r = map(fixup, r)
+                     if fixup and fixes:
+@@ -374,7 +374,7 @@ def _optimize_charset(charset, fixup, fixes, isunicode):
+     mapping = bytearray(256)
+     block = 0
+     data = bytearray()
+-    for i in range(0, 65536, 256):
++    for i in xrange(0, 65536, 256):
+         chunk = charmap[i: i + 256]
+         if chunk in comps:
+             mapping[i // 256] = comps[chunk]
+-- 
+1.8.3.1
+

python2.spec

@@ -15,7 +15,7 @@
 %undefine _debuginfo_subpackages
 Name:      python2
 Version:   2.7.16
-Release:   13
+Release:   14
 Summary:   Python is an interpreted, interactive object-oriented programming language suitable
 License:   Python
 URL:       https://www.python.org/
@@ -99,6 +99,7 @@ Patch6055: CVE-2018-20852.patch
 Patch6056: CVE-2019-16935.patch
 Patch6057: CVE-2019-17514.patch
 Patch6058: CVE-2017-18207.patch
+Patch6059: bugfix-excessive-memory-usage-when-using-regular-expressions.patch
 
 BuildRequires: libdb-devel libffi-devel valgrind-devel ncurses-devel expat-devel readline-devel
 BuildRequires: openssl-devel libtirpc-devel tcl-devel tk-devel glibc-devel libnsl2-devel
@@ -633,6 +634,12 @@ sed -e "s|LIBRARY_PATH|%{_libdir}/%{py_INSTSONAME_debug}|" %{SOURCE1} \
 %{dynload_dir}/_testcapimodule_d.so
 
 %changelog
+* Sat Feb 29 2020 hanxinke<hanxinke@huawei.com> - 2.7.16-14
+- Type:bugfix
+- ID:NA
+- SUG:NA
+- DESC:fix excessive memory usage when using regular expressions
+
 * Sat Feb 22 2020 openEuler Buildteam <buildteam@openeuler.org> - 2.7.16-13
 - Type:bugfix
 - Id:NA