Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 58 insertions, 0 deletions

diff --git a/REORG.TODO/stdlib/tst-empty-env.c b/REORG.TODO/stdlib/tst-empty-env.c
new file mode 100644
index 0000000000..0b0651d530
--- /dev/null
+++ b/REORG.TODO/stdlib/tst-empty-env.c
@@ -0,0 +1,58 @@
+/* Test that passing a NULL value does not hang environment traversal in
+   tunables.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+/* The test is useful only when the source is configured with
+   --enable-hardcoded-path-in-tests since otherwise the execve just picks up
+   the system dynamic linker.  */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+
+static int
+do_test (int argc, char **argv)
+{
+  if (argc == 2)
+    return 0;
+
+  char envname[] = "FOOBAR";
+  char *filename = program_invocation_name;
+  char *newargv[] = {filename, filename, NULL};
+  char *newenviron[] = {envname, NULL};
+
+   /* This was reported in Fedora:
+
+      https://bugzilla.redhat.com/show_bug.cgi?id=1414589
+
+      If one of the environment variables has no value, then the environment
+      traversal must skip and also advance to the next environment entry.  The
+      bug in question would cause this test to hang in an infinite loop.  */
+  int ret = execve (filename, newargv, newenviron);
+
+  if (ret != 0)
+    printf ("execve failed: %m");
+
+  /* We will reach here only if we fail execve.  */
+  return 1;
+}
+
+#define TIMEOUT 3
+#define TEST_FUNCTION_ARGV do_test
+#include <support/test-driver.c>