[patch] testsuite: New test gdb.dwarf2/dw2-aranges.exp

[patch] testsuite: New test gdb.dwarf2/dw2-aranges.exp

[Jan Kratochvil]

Hi,

this patch was written for a former bug in [archer-tromey-delayed-symfile].
This branch is probably going to be dropped but I thought that patch could go
for FSF GDB.  OTOH FSF GDB had never this bug.

Tested on {x86_64,x86_64-m32}-fedora13-linux-gnu.

OK to check-in?


Thanks,
Jan


gdb/testsuite/
2010-07-23  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* gdb.dwarf2/dw2-aranges.exp: New files.
	* gdb.dwarf2/dw2-aranges.S: New files.

--- /dev/null
+++ b/gdb/testsuite/gdb.dwarf2/dw2-aranges.S
@@ -0,0 +1,140 @@
+/* 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 .debug_aranges containing zero address_size.  */
+
+/* Dummy function to provide debug information for.  */
+
+	.text
+.Lbegin_text1:
+	.globl main
+	.type main, %function
+main:
+.Lbegin_main:
+	.int 0
+.Lend_main:
+	.size main, .-main
+.Lend_text1:
+
+/* Debug information */
+
+	.section .debug_info
+.Lcu1_begin:
+	/* CU header */
+	.4byte	.Lcu1_end - .Lcu1_start		/* Length of Compilation Unit */
+.Lcu1_start:
+	.2byte	2				/* DWARF Version */
+	.4byte	.Labbrev1_begin			/* Offset into abbrev section */
+	.byte	4				/* Pointer size */
+
+	/* CU die */
+	.uleb128 1				/* Abbrev: DW_TAG_compile_unit */
+	.4byte	.Lend_text1			/* DW_AT_high_pc */
+	.4byte	.Lbegin_text1			/* DW_AT_low_pc */
+	.ascii	"file1.txt\0"			/* DW_AT_name */
+	.ascii	"GNU C 3.3.3\0"			/* DW_AT_producer */
+	.byte	1				/* DW_AT_language (C) */
+
+	/* main */
+	.uleb128	2			/* Abbrev: DW_TAG_subprogram */
+	.byte		1			/* DW_AT_external */
+	.byte		1			/* DW_AT_decl_file */
+	.byte		2			/* DW_AT_decl_line */
+	.ascii		"main\0"		/* DW_AT_name */
+	.4byte		.Ltype_int-.Lcu1_begin	/* DW_AT_type */
+	.4byte		.Lbegin_main	/* DW_AT_low_pc */
+	.4byte		.Lend_main		/* DW_AT_high_pc */
+	.byte		1			/* DW_AT_frame_base: length */
+	.byte		0x55			/* DW_AT_frame_base: DW_OP_reg5 */
+
+.Ltype_int:
+	.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		0			/* End of children of CU */
+
+.Lcu1_end:
+
+/* Abbrev table */
+	.section .debug_abbrev
+.Labbrev1_begin:
+	.uleb128	1			/* Abbrev code */
+	.uleb128	0x11			/* DW_TAG_compile_unit */
+	.byte		1			/* has_children */
+	.uleb128	0x12			/* DW_AT_high_pc */
+	.uleb128	0x1			/* DW_FORM_addr */
+	.uleb128	0x11			/* DW_AT_low_pc */
+	.uleb128	0x1			/* DW_FORM_addr */
+	.uleb128	0x3			/* DW_AT_name */
+	.uleb128	0x8			/* DW_FORM_string */
+	.uleb128	0x25			/* DW_AT_producer */
+	.uleb128	0x8			/* DW_FORM_string */
+	.uleb128	0x13			/* DW_AT_language */
+	.uleb128	0xb			/* DW_FORM_data1 */
+	.byte		0x0			/* Terminator */
+	.byte		0x0			/* Terminator */
+
+	.uleb128	2			/* Abbrev code */
+	.uleb128	0x2e			/* DW_TAG_subprogram */
+	.byte		0			/* has_children */
+	.uleb128	0x3f			/* DW_AT_external */
+	.uleb128	0xc			/* DW_FORM_flag */
+	.uleb128	0x3a			/* DW_AT_decl_file */
+	.uleb128	0xb			/* DW_FORM_data1 */
+	.uleb128	0x3b			/* DW_AT_decl_line */
+	.uleb128	0xb			/* DW_FORM_data1 */
+	.uleb128	0x3			/* DW_AT_name */
+	.uleb128	0x8			/* DW_FORM_string */
+	.uleb128	0x49			/* DW_AT_type */
+	.uleb128	0x13			/* DW_FORM_ref4 */
+	.uleb128	0x11			/* DW_AT_low_pc */
+	.uleb128	0x1			/* DW_FORM_addr */
+	.uleb128	0x12			/* DW_AT_high_pc */
+	.uleb128	0x1			/* DW_FORM_addr */
+	.uleb128	0x40			/* DW_AT_frame_base */
+	.uleb128	0xa			/* DW_FORM_block1 */
+	.byte		0x0			/* Terminator */
+	.byte		0x0			/* Terminator */
+
+	.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 */
+
+	.byte		0x0			/* Terminator */
+	.byte		0x0			/* Terminator */
+
+/* aranges table */
+	.section .debug_aranges
+	.long	.Laranges_end - 1f
+1:
+	.2byte	2				/* aranges Version */
+	.4byte	.Lcu1_begin - .debug_info	/* Offset into .debug_info section */
+	/* The GDB crasher is this zero value.  */
+	.byte		0			/* aranges address_size */
+	.byte		0			/* aranges segment_size */
+
+.Laranges_end:
--- /dev/null
+++ b/gdb/testsuite/gdb.dwarf2/dw2-aranges.exp
@@ -0,0 +1,40 @@
+# 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 .debug_aranges containing zero address_size.
+
+# This test can only be run on targets which support DWARF-2 and use gas.
+# For now pick a sampling of likely targets.
+if {![istarget *-*-linux*]
+    && ![istarget *-*-gnu*]
+    && ![istarget *-*-elf*]
+    && ![istarget *-*-openbsd*]
+    && ![istarget arm-*-eabi*]
+    && ![istarget powerpc-*-eabi*]} {
+    return 0  
+}
+
+set testfile "dw2-aranges"
+set srcfile ${testfile}.S
+set binfile ${objdir}/${subdir}/${testfile}
+
+if  { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable {nodebug}] != "" } {
+    return -1
+}
+
+clean_restart $testfile
+
+# Failed gdb_load would abort the testcase execution earlier.
+pass "file loaded"

Re: [patch] testsuite: New test gdb.dwarf2/dw2-aranges.exp

[Tom Tromey]

>>>>> "Jan" == Jan Kratochvil <jan.kratochvil@redhat.com> writes:

Jan> this patch was written for a former bug in
Jan> [archer-tromey-delayed-symfile].  This branch is probably going to
Jan> be dropped but I thought that patch could go for FSF GDB.  OTOH FSF
Jan> GDB had never this bug.

Jan> OK to check-in?

I don't think we need this, because CVS gdb doesn't read .debug_aranges,
and I don't think we're going to add that.

If we do end up needing that feature in the future, I think we can
easily extract the necessary code from the branch.  So, I would
recommend committing this there.

Tom

Re: [patch] testsuite: New test gdb.dwarf2/dw2-aranges.exp

[Jan Kratochvil]

On Sat, 24 Jul 2010 00:04:41 +0200, Tom Tromey wrote:
> I don't think we need this, because CVS gdb doesn't read .debug_aranges,
> and I don't think we're going to add that.

I agree, I should have figured it out.


> If we do end up needing that feature in the future, I think we can
> easily extract the necessary code from the branch.  So, I would
> recommend committing this there.

It is already on that branch; please ignore this mail thread.


Jan