1 files changed, 33 insertions, 0 deletions
diff --git a/src/grep/tests/pcre-infloop b/src/grep/tests/pcre-infloop
new file mode 100755
index 0000000..a4c7cac
--- /dev/null
+++ b/src/grep/tests/pcre-infloop
@@ -0,0 +1,33 @@
+#!/bin/sh
+# With some versions of libpcre, apparently including 8.35,
+# the following would trigger an infinite loop in its match function.
+
+# Copyright 2014-2021 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_timeout_
+require_en_utf8_locale_
+require_compiled_in_MB_support
+LC_ALL=en_US.UTF-8 require_pcre_
+
+printf 'a\201b\r' > in || framework_failure_
+
+fail=0
+
+returns_ 1 env LC_ALL=en_US.UTF-8 timeout 10 grep -P 'a.?..b' in \
+  || fail_ "libpcre's match function appears to infloop"
+
+Exit $fail