gcc PR lto/42757

	* plugin.cc (Pluginobj::get_symbol_resolution_info): Check for
	prevailing definitions of common symbols.
	* testsuite/plugin_test_6.sh: New test case.
	* testsuite/plugin_common_test_1.c: New test case.
	* testsuite/plugin_common_test_2.c: New test case.
	* testsuite/Makefile.am (plugin_test_6): New test case.
	* testsuite/Makefile.in: Regenerate.

1 files changed, 58 insertions, 0 deletions

diff --git a/gold/testsuite/plugin_test_6.sh b/gold/testsuite/plugin_test_6.sh
new file mode 100755
index 00000000000..9b368e784a2
--- /dev/null
+++ b/gold/testsuite/plugin_test_6.sh
@@ -0,0 +1,58 @@
+#!/bin/sh
+
+# plugin_test_6.sh -- a test case for the plugin API.
+
+# Copyright 2010 Free Software Foundation, Inc.
+# Written by Cary Coutant <ccoutant@google.com>.
+
+# This file is part of gold.
+
+# 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, write to the Free Software
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+# MA 02110-1301, USA.
+
+# This file goes with plugin_test_6.c, a simple plug-in library that
+# exercises the basic interfaces and prints out version numbers and
+# options passed to the plugin.
+
+check()
+{
+    if ! grep -q "$2" "$1"
+    then
+	echo "Did not find expected output in $1:"
+	echo "   $2"
+	echo ""
+	echo "Actual output below:"
+	cat "$1"
+	exit 1
+    fi
+}
+
+check plugin_test_6.err "API version:"
+check plugin_test_6.err "gold version:"
+check plugin_test_6.err "plugin_common_test_1.syms: claim file hook called"
+check plugin_test_6.err "plugin_common_test_2.syms: claim file hook called"
+check plugin_test_6.err "plugin_common_test_1.syms: c1: PREVAILING_DEF_IRONLY"
+check plugin_test_6.err "plugin_common_test_1.syms: c2: PREVAILING_DEF_IRONLY"
+check plugin_test_6.err "plugin_common_test_1.syms: c3: RESOLVED_IR"
+check plugin_test_6.err "plugin_common_test_1.syms: c4: RESOLVED_IR"
+check plugin_test_6.err "plugin_common_test_1.syms: c5: PREVAILING_DEF_IRONLY"
+check plugin_test_6.err "plugin_common_test_2.syms: c1: RESOLVED_IR"
+check plugin_test_6.err "plugin_common_test_2.syms: c2: RESOLVED_IR"
+check plugin_test_6.err "plugin_common_test_2.syms: c3: PREVAILING_DEF_IRONLY"
+check plugin_test_6.err "plugin_common_test_2.syms: c4: PREVAILING_DEF_IRONLY"
+check plugin_test_6.err "plugin_common_test_2.syms: c5: RESOLVED_IR"
+check plugin_test_6.err "cleanup hook called"
+
+exit 0