New test, for fix of 2004-04-19.

diff --git a/tests/misc/pwd b/tests/misc/pwd
new file mode 100755 (executable)
index 0000000..74bbc22
--- /dev/null
+++ b/tests/misc/pwd
@@ -0,0 +1,61 @@
+#!/bin/sh
+
+: ${PERL=perl}
+
+$PERL -e 1 > /dev/null 2>&1 || {
+  echo 1>&2 "$0: configure didn't find a usable version of Perl," \
+    "so can't run this test"
+  exit 77
+}
+
+pwd=`pwd`
+t0=`echo "$0"|sed 's,.*/,,'`.tmp; tmp=$t0/$$
+trap 'status=$?; cd $pwd; chmod -R u+rwx $t0; rm -rf $t0 && exit $status' 0
+trap '(exit $?); exit $?' 1 2 13 15
+
+framework_failure=0
+mkdir -p $tmp || framework_failure=1
+cd $tmp || framework_failure=1
+
+if test $framework_failure = 1; then
+  echo "$0: failure in testing framework" 1>&2
+  (exit 1); exit 1
+fi
+
+ARGV_0=$0
+export ARGV_0
+
+$PERL -w -- - <<\EOF
+
+# Show that pwd works even when the length of the resulting
+# directory name is longer than PATH_MAX.
+use strict;
+use Cwd;
+
+(my $ME = $ENV{ARGV_0}) =~ s|.*/||;
+
+my $cwd = getcwd;
+chomp $cwd;
+my $z = 'z' x 31;
+my $n = 256;
+my $expected = $cwd . ("/$z" x $n);
+
+my $i = 0;
+do
+  {
+    mkdir $z, 0700
+      or die "$ME: at depth $i: $!\n";
+    chdir $z;
+  }
+until (++$i == $n);
+
+my $build_src_dir = $ENV{BUILD_SRC_DIR};
+$build_src_dir
+  or die "$ME: envvar BUILD_SRC_DIR not defined\n";
+my $pwd_binary = "$build_src_dir/pwd";
+-x $pwd_binary
+  or die "$ME: $pwd_binary is not an executable file\n";
+chomp (my $actual = `$pwd_binary`);
+$expected eq $actual
+  or die "$ME: $expected\n$actual\n";
+EOF