1 files changed, 52 insertions, 0 deletions
diff --git a/tests/misc/sort-stale-thread-mem.sh b/tests/misc/sort-stale-thread-mem.sh
new file mode 100755
index 00000000..78fa2cda
--- /dev/null
+++ b/tests/misc/sort-stale-thread-mem.sh
@@ -0,0 +1,52 @@
+#!/bin/sh
+# Trigger a bug that would cause 'sort' to reference stale thread stack memory.
+
+# Copyright (C) 2010-2013 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 <http://www.gnu.org/licenses/>.
+
+# written by Jim Meyering and Paul Eggert
+
+. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
+print_ver_ sort
+
+very_expensive_
+require_valgrind_
+
+grep '^#define HAVE_PTHREAD_T 1' "$CONFIG_HEADER" > /dev/null ||
+  skip_ 'requires pthreads'
+
+# gensort output seems to trigger the failure more often,
+# so prefer gensort if it is available.
+(gensort -a 10000 in) 2>/dev/null ||
+  seq -f %-98f 10000 | shuf > in ||
+  framework_failure_
+
+# On Fedora-17-beta (valgrind-3.7.0-2.fc17.x86_64), this evokes two
+# "Conditional jump or move depends on uninitialised value(s)" errors,
+# each originating from _dl_start.
+valgrind --quiet --error-exitcode=3 sort --version > /dev/null ||
+  framework_failure_ 'valgrind fails for trivial sort invocation'
+
+# With the bug, 'sort' would fail under valgrind about half the time,
+# on some circa-2010 multicore Linux platforms.  Run the test 100 times
+# so that the probability of missing the bug should be about 1 in
+# 2**100 on these hosts.
+for i in $(seq 100); do
+  valgrind --quiet --error-exitcode=3 \
+      sort -S 100K --parallel=2 in > /dev/null ||
+    { fail=$?; echo iteration $i failed; Exit $fail; }
+done
+
+Exit $fail