Add a test for the printf fix of 2007-10-21.

* tests/misc/printf-surprise: New file.  Test for 2007-10-21's fix.
* tests/misc/Makefile.am (TESTS): Add printf-surprise.

diff --git a/ChangeLog b/ChangeLog
index 7a23e14c3ba387aa0e8b0e258f85aa425069f9af..8c025853e091e3510441367d645e2102337fcf27 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2007-10-26  Jim Meyering  <meyering@redhat.com>
+
+       Add a test for the printf fix of 2007-10-21.
+       * tests/misc/printf-surprise: New file.  Test for 2007-10-21's fix.
+       * tests/misc/Makefile.am (TESTS): Add printf-surprise.
+
 2007-10-24  Micah Cowan  <micah@cowan.name>
 
        Remove vestiges of cvs-gnulib-checkout process.  Now we use git.

diff --git a/tests/misc/Makefile.am b/tests/misc/Makefile.am
index 5f256cfa23d20164b0c1a802dbbe644f6dec71c6..2be132f30fe0eb00e822d353c2833f4d4ca82caf 100644 (file)
--- a/tests/misc/Makefile.am
+++ b/tests/misc/Makefile.am
@@ -83,6 +83,7 @@ TESTS = \
   pathchk1 \
   printf \
   printf-hex \
+  printf-surprise \
   pwd-long \
   readlink-fp-loop \
   runcon-no-reorder \
@@ -116,5 +117,4 @@ TESTS = \
   tty-eof \
   unexpand
 
-
 include $(top_srcdir)/tests/check.mk

diff --git a/tests/misc/printf-surprise b/tests/misc/printf-surprise
new file mode 100755 (executable)
index 0000000..03bc73a
--- /dev/null
+++ b/tests/misc/printf-surprise
@@ -0,0 +1,43 @@
+#!/bin/sh
+# Detect printf(3) failure even when it doesn't set stream error indicator
+
+# Copyright (C) 2007 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/>.
+
+prog="$abs_top_builddir/src/printf"
+
+if test "$VERBOSE" = yes; then
+  set -x
+  "$prog" --version
+fi
+
+. $srcdir/../test-lib.sh
+
+fail=0
+
+# The literal width below is 2^31-1.
+# I expect this usage of the printf program to fail.
+# However, it depends on the C library printf function.
+# It could conceivably output "1." and 2GB worth of '0's.
+# You can provoke misbehavior with a much smaller width if you limit
+# virtual memory via, e.g., ulimit -v 10000, but using ulimit would
+# be tricky, since it's not portable.
+"$prog" %.2147483647f 1 > /dev/null 2> err && fail=1
+echo "$prog: cannot perform formatted output: Cannot allocate memory" \
+  > exp || framework_failure
+
+compare err exp || fail=1
+
+(exit $fail); exit $fail