gdb/

	Fix crash.
	* valops.c (compare_parameters): Verify TYPE_NFIELDS before
	touching TYPE_FIELD_ARTIFICIAL.

gdb/testsuite/
	* gdb.cp/noparam.exp: New file.
	* gdb.cp/noparam.cc: New file.

5 files changed, 62 insertions, 1 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index d65f43b..a164d82 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,9 @@
+2011-01-29  Jan Kratochvil  <jan.kratochvil@redhat.com>
+
+	Fix crash.
+	* valops.c (compare_parameters): Verify TYPE_NFIELDS before
+	touching TYPE_FIELD_ARTIFICIAL.
+
 2011-01-28  Richard Earnshaw  <rearnsha@arm.com>
 
 	* MAINTAINERS: Move myself from Responsible Maintainers to Authorized
diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 1e7543e..1b63bff 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2011-01-29  Jan Kratochvil  <jan.kratochvil@redhat.com>
+
+	* gdb.cp/noparam.exp: New file.
+	* gdb.cp/noparam.cc: New file.
+
 2011-01-28  Pedro Alves  <pedro@codesourcery.com>
 
 	* gdb.trace/tfile.exp: Test that with no traceframe selected,
diff --git a/gdb/testsuite/gdb.cp/noparam.cc b/gdb/testsuite/gdb.cp/noparam.cc
new file mode 100644
index 0000000..6306650
--- /dev/null
+++ b/gdb/testsuite/gdb.cp/noparam.cc
@@ -0,0 +1,29 @@
+/* This testcase is part of GDB, the GNU debugger.
+
+   Copyright 2011 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/>.  */
+
+class C
+{
+public:
+  static void m () {}
+};
+
+int
+main ()
+{
+  C::m ();
+  return 0;
+}
diff --git a/gdb/testsuite/gdb.cp/noparam.exp b/gdb/testsuite/gdb.cp/noparam.exp
new file mode 100644
index 0000000..ce68e1b
--- /dev/null
+++ b/gdb/testsuite/gdb.cp/noparam.exp
@@ -0,0 +1,21 @@
+# Copyright 2011 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/>.
+
+if { [prepare_for_testing noparam.exp "noparam" "noparam.cc" {debug c++}] } {
+    return -1
+}
+
+# Check if GDB does not crash.
+gdb_test "p C::m (int)" "no member function matches that type instantiation"
diff --git a/gdb/valops.c b/gdb/valops.c
index 19d5238..24c2269 100644
--- a/gdb/valops.c
+++ b/gdb/valops.c
@@ -3097,7 +3097,7 @@ compare_parameters (struct type *t1, struct type *t2, int skip_artificial)
 {
   int start = 0;
 
-  if (TYPE_FIELD_ARTIFICIAL (t1, 0))
+  if (TYPE_NFIELDS (t1) > 0 && TYPE_FIELD_ARTIFICIAL (t1, 0))
     ++start;
 
   /* If skipping artificial fields, find the first real field