2010-05-11 Pierre Muller <muller@ics.u-strasbg.fr>

PR exp/11530.
	* gdbtypes.c (lookup_struct_elt_type): Also lookup
	names of unnamed structures or unions.

testsuite ChangeLog entry:

2010-05-11  Pierre Muller  <muller@ics.u-strasbg.fr>

	PR exp/11530.
	* testsuite/gdb.base/gdb11530.c: New file.
	* testsuite/gdb.base/gdb11530.exp: New file.

gdb/ChangeLog

@@ -1,3 +1,9 @@
+2010-05-11  Pierre Muller  <muller@ics.u-strasbg.fr>
+
+	PR exp/11530.
+	* gdbtypes.c (lookup_struct_elt_type): Also lookup
+	names of unnamed structures or unions.
+
 2010-05-11  Pierre Muller  <muller@ics.u-strasbg.fr>
 
 	* procfs.c (proc_watchpoint_address): New function.

gdb/gdbtypes.c

@@ -1244,6 +1244,13 @@ lookup_struct_elt_type (struct type *type, char *name, int noerr)
 	{
 	  return TYPE_FIELD_TYPE (type, i);
 	}
+     else if (!t_field_name || *t_field_name == '\0')
+	{
+	  struct type *subtype = lookup_struct_elt_type (
+				   TYPE_FIELD_TYPE (type, i), name, 1);
+	  if (subtype != NULL)
+	    return subtype;
+	}
     }
 
   /* OK, it's not in this class.  Recursively check the baseclasses.  */

gdb/testsuite/ChangeLog

@@ -1,3 +1,9 @@
+2010-05-11  Pierre Muller  <muller@ics.u-strasbg.fr>
+
+	PR exp/11530.
+	* gdb.base/gdb11530.c: New file.
+	* gdb.base/gdb11530.exp: New file.
+
 2010-05-08  Jan Kratochvil  <jan.kratochvil@redhat.com>
 
 	* gdb.dwarf2/dw2-modula2-self-type.exp: New.

gdb/testsuite/gdb.base/gdb11530.c

@@ -0,0 +1,35 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2010 Free Software Foundation, Inc.
+
+   Contributed by Pierre Muller.
+
+   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/>.
+
+   Test for problem related to unnamed unions.  */
+
+struct a
+  {
+    union
+      {
+        int i;
+      };
+  } a;
+
+int
+main (void)
+{
+  return sizeof (a.i);
+}
+

gdb/testsuite/gdb.base/gdb11530.exp

@@ -0,0 +1,55 @@
+# This testcase is part of GDB, the GNU debugger.
+
+# Copyright 2010 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/>.
+
+# Test GDB bug report 11530.
+# This is a problem related unnamed unions.
+
+if $tracelevel then {
+	strace $tracelevel
+}
+
+set prms_id 0
+set bug_id 0
+
+set testfile "gdb11530"
+set binfile ${testfile}${EXEEXT}
+
+# Unnamed union is a GNU extension, thus we restrict the test
+# to gcc compiler.
+
+if [get_compiler_info ${binfile}] {
+    return -1;
+}
+
+if { ![test_compiler_info gcc*] } {
+    return 0;
+}
+
+if { [prepare_for_testing $testfile.exp $testfile $testfile.c {debug}] } {
+    return -1;
+}
+
+
+if { ![runto main] } then {
+    fail "run to main"
+    return
+}
+
+gdb_test "print a.i" " = 0"
+gdb_test "print sizeof (a.i)" " = \[0-9\]+"
+gdb_test "print sizeof (a.i) == sizeof (int)" " = 1"
+