From bd1719aca5179bd679ab642b5fbd22d4b65afa3f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Henrik=20Lindstr=C3=B6m?= <henrik@lxm.se>
Date: Fri, 26 Jul 2024 12:33:51 +0200
Subject: [PATCH] rtld: Add test case for '--' option

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
---
 elf/Makefile              |  7 +++++++
 elf/tst-rtld-dash-dash.sh | 41 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 48 insertions(+)
 create mode 100644 elf/tst-rtld-dash-dash.sh

diff --git a/elf/Makefile b/elf/Makefile
index a03c6520d8..0792b57678 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -634,6 +634,13 @@ $(objpfx)tst-rtld-does-not-exist.out: tst-rtld-does-not-exist.sh $(objpfx)ld.so
 	$(SHELL) $< $(objpfx)ld.so > $@; \
 	$(evaluate-test)
 
+ifeq ($(run-built-tests),yes)
+tests-special += $(objpfx)tst-rtld-dash-dash.out
+endif
+$(objpfx)tst-rtld-dash-dash.out: tst-rtld-dash-dash.sh $(objpfx)ld.so
+	$(SHELL) $< $(objpfx)ld.so > $@; \
+	$(evaluate-test)
+
 tests += $(tests-execstack-$(have-z-execstack))
 ifeq ($(run-built-tests),yes)
 tests-special += \
diff --git a/elf/tst-rtld-dash-dash.sh b/elf/tst-rtld-dash-dash.sh
new file mode 100644
index 0000000000..2bc1f85598
--- /dev/null
+++ b/elf/tst-rtld-dash-dash.sh
@@ -0,0 +1,41 @@
+#!/bin/sh
+# Test for the '--' option in ld.so.
+# Copyright (C) 2024 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
+# <https://www.gnu.org/licenses/>.
+
+export LC_ALL=C
+
+# --inhibit-cache to suppress "No such file or directory" message when
+# /etc/ld.so.cache does not exist.
+rtld="$1 --inhibit-cache"
+tmp_out="$(mktemp)"
+
+$rtld -- --program-does-not-exist 2>"$tmp_out"
+status=$?
+echo "$rtld exit status: $status"
+echo "output (with expected error):"
+cat "$tmp_out"
+
+if test $status -eq 127 \
+	&& grep -q "^--program-does-not-exist: error while loading shared libraries: --program-does-not-exist: cannot open shared object file$" "$tmp_out" \
+	&& test "$(wc -l < "$tmp_out")" -eq 1 ; then
+    status=0
+else
+    status=1
+fi
+rm "$tmp_out"
+exit $status