gdb/

	* stack.c (print_frame_args): New variable except.  Wrap
	read_var_value and common_val_print into TRY_CATCH.

gdb/testsuite/
	* gdb.dwarf2/dw2-param-error-main.c: New file.
	* gdb.dwarf2/dw2-param-error.S: New file.
	* gdb.dwarf2/dw2-param-error.exp: New file.

3 files changed, 178 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.dwarf2/dw2-param-error-main.c b/gdb/testsuite/gdb.dwarf2/dw2-param-error-main.c
new file mode 100644
index 0000000..ad3e42a
--- /dev/null
+++ b/gdb/testsuite/gdb.dwarf2/dw2-param-error-main.c
@@ -0,0 +1,37 @@
+/* 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/>.  */
+
+asm (".globl f_start");
+asm ("f_start:");
+
+volatile int v;
+
+void
+f (int x)
+{
+  v++;
+}
+
+asm (".globl f_end");
+asm ("f_end:");
+
+int
+main (void)
+{
+  f (1);
+  return 0;
+}
diff --git a/gdb/testsuite/gdb.dwarf2/dw2-param-error.S b/gdb/testsuite/gdb.dwarf2/dw2-param-error.S
new file mode 100644
index 0000000..c10be1e
--- /dev/null
+++ b/gdb/testsuite/gdb.dwarf2/dw2-param-error.S
@@ -0,0 +1,108 @@
+/* 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/>.  */
+
+	.text
+var:	.4byte	23
+
+	.section	.debug_info
+debug_start:
+	.long	debug_end - 1f	/* Length of Compilation Unit Info */
+1:
+	.2byte	0x3	/* DWARF version number */
+	.long	.Ldebug_abbrev0	/* Offset Into Abbrev. Section */
+	.byte	0x4	/* Pointer Size (in bytes) */
+	.uleb128 0x1	/* (DIE (0xb) DW_TAG_compile_unit) */
+	.ascii "GNU C 4.4.3\0"	/* DW_AT_producer */
+	.byte	0x1	/* DW_AT_language */
+	.ascii "1.c\0"	/* DW_AT_name */
+	.uleb128 0x4	/* (DIE (0x3c) DW_TAG_subprogram) */
+	.ascii "f\0"	/* DW_AT_name */
+	.long	f_start	/* DW_AT_low_pc */
+	.long	f_end	/* DW_AT_high_pc */
+	.byte	0x1	/* DW_AT_prototyped */
+
+	.uleb128 0x5	/* (DIE (0x42) DW_TAG_formal_parameter) */
+	.ascii	"bad\0"		/* DW_AT_name */
+	.long	type - debug_start	/* DW_AT_type */
+	.byte	2f - 1f	/* DW_AT_location */
+1:	.byte	0x06	/* DW_OP_deref */
+2:
+	.uleb128 0x5	/* (DIE (0x??) DW_TAG_formal_parameter) */
+	.ascii	"good\0"		/* DW_AT_name */
+	.long	type - debug_start	/* DW_AT_type */
+	.byte	2f - 1f	/* DW_AT_location */
+1:	.byte	0x03	/* DW_OP_addr */
+	.4byte	var
+2:
+
+	.byte	0x0	/* end of children of DIE 0x3c */
+type:
+	.uleb128	3			/* Abbrev: DW_TAG_base_type */
+	.ascii		"int\0"			/* DW_AT_name */
+	.byte		4			/* DW_AT_byte_size */
+	.byte		5			/* DW_AT_encoding */
+
+	.byte	0x0	/* end of children of DIE 0xb */
+debug_end:
+
+	.section	.debug_abbrev
+.Ldebug_abbrev0:
+	.uleb128 0x1	/* (abbrev code) */
+	.uleb128 0x11	/* (TAG: DW_TAG_compile_unit) */
+	.byte	0x1	/* DW_children_yes */
+	.uleb128 0x25	/* (DW_AT_producer) */
+	.uleb128 0x8	/* (DW_FORM_string) */
+	.uleb128 0x13	/* (DW_AT_language) */
+	.uleb128 0xb	/* (DW_FORM_data1) */
+	.uleb128 0x3	/* (DW_AT_name) */
+	.uleb128 0x8	/* (DW_FORM_string) */
+	.byte	0x0
+	.byte	0x0
+	.uleb128	3			/* Abbrev code */
+	.uleb128	0x24			/* DW_TAG_base_type */
+	.byte		0			/* has_children */
+	.uleb128	0x3			/* DW_AT_name */
+	.uleb128	0x8			/* DW_FORM_string */
+	.uleb128	0xb			/* DW_AT_byte_size */
+	.uleb128	0xb			/* DW_FORM_data1 */
+	.uleb128	0x3e			/* DW_AT_encoding */
+	.uleb128	0xb			/* DW_FORM_data1 */
+	.byte		0x0			/* Terminator */
+	.byte		0x0			/* Terminator */
+	.uleb128 0x4	/* (abbrev code) */
+	.uleb128 0x2e	/* (TAG: DW_TAG_subprogram) */
+	.byte	0x1	/* DW_children_yes */
+	.uleb128 0x3	/* (DW_AT_name) */
+	.uleb128 0x8	/* (DW_FORM_string) */
+	.uleb128 0x11	/* (DW_AT_low_pc) */
+	.uleb128 0x1	/* (DW_FORM_addr) */
+	.uleb128 0x12	/* (DW_AT_high_pc) */
+	.uleb128 0x1	/* (DW_FORM_addr) */
+	.uleb128 0x27	/* (DW_AT_prototyped) */
+	.uleb128 0xc	/* (DW_FORM_flag) */
+	.byte	0x0
+	.byte	0x0
+	.uleb128 0x5	/* (abbrev code) */
+	.uleb128 0x5	/* (TAG: DW_TAG_formal_parameter) */
+	.byte	0x0	/* DW_children_no */
+	.uleb128	0x3			/* DW_AT_name */
+	.uleb128	0x8			/* DW_FORM_string */
+	.uleb128 0x49	/* (DW_AT_type) */
+	.uleb128 0x13	/* (DW_FORM_ref4) */
+	.uleb128 0x02	/* (DW_AT_location) */
+	.uleb128 0x0a	/* (DW_FORM_block1) */
+	.byte	0x0
+	.byte	0x0
+	.byte	0x0
diff --git a/gdb/testsuite/gdb.dwarf2/dw2-param-error.exp b/gdb/testsuite/gdb.dwarf2/dw2-param-error.exp
new file mode 100644
index 0000000..791799c
--- /dev/null
+++ b/gdb/testsuite/gdb.dwarf2/dw2-param-error.exp
@@ -0,0 +1,33 @@
+# 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/>.
+load_lib dwarf.exp
+
+# This test can only be run on targets which support DWARF-2 and use gas.
+if {![dwarf2_support]} {
+    return 0  
+}
+
+set testfile dw2-param-error
+if { [prepare_for_testing ${testfile}.exp "${testfile}" "${testfile}-main.c ${testfile}.S" {nodebug}] } {
+    return -1
+}
+
+if ![runto f] {
+    return -1
+}
+
+# FAIL was printing:
+# [...] in f (bad=)
+gdb_test "frame" { f \(bad=<error reading variable: Asked for position 0 of stack, stack only has 0 elements on it\.>, good=23\)}