PR c++/18141, c++/18417.

gdb/ChangeLog:

	* cp-support.c (cp_lookup_rtti_type): Handle the case of NAME being
	a typedef.

gdb/testsuite/ChangeLog:

	* gdb.cp/iostream.cc: New file.
	* gdb.cp/iostream.exp: New file.

2 files changed, 71 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.cp/iostream.cc b/gdb/testsuite/gdb.cp/iostream.cc
new file mode 100644
index 0000000..7769e2a
--- /dev/null
+++ b/gdb/testsuite/gdb.cp/iostream.cc
@@ -0,0 +1,27 @@
+/* Code to go along with tests in rtti.exp.
+   
+   Copyright 2015 Free Software Foundation, Inc.
+
+   This file is part of GDB.
+
+   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/>.  */
+
+#include <iostream>
+
+int
+main ()
+{
+  std::cerr << "cerr\n";
+  return 0;
+}
diff --git a/gdb/testsuite/gdb.cp/iostream.exp b/gdb/testsuite/gdb.cp/iostream.exp
new file mode 100644
index 0000000..3b864a8
--- /dev/null
+++ b/gdb/testsuite/gdb.cp/iostream.exp
@@ -0,0 +1,44 @@
+# Copyright 2015 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/>.
+
+# This file is part of the gdb testsuite.
+# It tests various aspects of iostream that have caused problems for gdb.
+
+if { [skip_cplus_tests] } { continue }
+
+standard_testfile .cc
+
+if {[prepare_for_testing $testfile.exp $testfile $srcfile {debug c++}]} {
+    return -1
+}
+
+if ![runto_main] {
+    perror "couldn't run to breakpoint"
+    continue
+}
+
+# PR 18417
+# std::iostream is problematic because the minimal symbol for its vtable is
+# "_ZTVSo" which demangles as "vtable for std::ostream" and std::iostream
+# a typedef.
+set test "p std::cerr"
+gdb_test_multiple $test $test {
+    -re "warning: RTTI symbol for class '.*' has bad type.*$gdb_prompt $" {
+	fail $test
+    }
+    -re ".*$gdb_prompt $" {
+	pass $test
+    }
+}