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* dwarf2read.c (init_cutu_and_read_dies): Renamed from

Browse Source 
init_and_read_dies_worker.  All callers updated.
	(init_cu_and_read_dies, init_tu_and_read_dies): Delete.  All calls
	replaced with init_cutu_and_read_dies.
	(load_partial_comp_unit): Pass 1 for use_existing_cu.
	(find_partial_die): Remove FIXME.  Don't free current CU.

	testsuite/
	* gdb.dwarf2/pr13961.S: New file.
	* gdb.dwarf2/pr13961.exp: New file.
This commit is contained in:
Doug Evans 2012-05-01 03:00:36 +00:00
parent ec3f619d0a
commit fd8205284b
5 changed files with 431 additions and 69 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
gdb/ChangeLog
View File

@ -1,3 +1,12 @@
2012-04-30 Doug Evans <dje@google.com>
* dwarf2read.c (init_cutu_and_read_dies): Renamed from
init_and_read_dies_worker. All callers updated.
(init_cu_and_read_dies, init_tu_and_read_dies): Delete. All calls
replaced with init_cutu_and_read_dies.
(load_partial_comp_unit): Pass 1 for use_existing_cu.
(find_partial_die): Remove FIXME. Don't free current CU.
2012-04-30 Sterling Augustine <saugustine@google.com>
* contrib: New directory.

94
gdb/dwarf2read.c
View File

@ -597,7 +597,7 @@ struct die_reader_specs
gdb_byte *buffer;
};
/* Type of function passed to init_cu_and_read_dies, et.al. */
/* Type of function passed to init_cutu_and_read_dies, et.al. */
typedef void (die_reader_func_ftype) (const struct die_reader_specs *reader,
gdb_byte *info_ptr,
struct die_info *comp_unit_die,
@ -1401,8 +1401,8 @@ static gdb_byte *read_and_check_comp_unit_head
struct dwarf2_section_info *section, gdb_byte *info_ptr,
int is_debug_types_section);
static void init_tu_and_read_dies
(struct dwarf2_per_cu_data *this_cu, int keep,
static void init_cutu_and_read_dies
(struct dwarf2_per_cu_data *this_cu, int use_existing_cu, int keep,
die_reader_func_ftype *die_reader_func, void *data);
static void init_cutu_and_read_dies_simple
@ -2474,7 +2474,7 @@ dw2_get_file_names (struct objfile *objfile,
However, that's not the case for TUs where DW_AT_stmt_list lives in the
DWO file. */
if (this_cu->is_debug_types)
init_tu_and_read_dies (this_cu, 0, dw2_get_file_names_reader, NULL);
init_cutu_and_read_dies (this_cu, 0, 0, dw2_get_file_names_reader, NULL);
else
init_cutu_and_read_dies_simple (this_cu, dw2_get_file_names_reader, NULL);
@ -3628,8 +3628,7 @@ dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu)
}
}
/* Subroutine of init_{cu,tu}_and_read_dies.
Do all the work necessary to initialize THIS_CU->cu and read in its DIE(s).
/* Initialize a CU (or TU) and read its DIEs.
If the CU defers to a DWO file, read the DWO file as well.
If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it.
@ -3639,18 +3638,13 @@ dwarf2_find_base_address (struct die_info *die, struct dwarf2_cu *cu)
read_in_chain. Otherwise the dwarf2_cu data is freed at the end.
WARNING: If THIS_CU is a "dummy CU" (used as filler by the incremental
linker) then DIE_READER_FUNC will not get called.
FIXME: As an implementation detail between our callers and us,
USE_EXISTING_CU and KEEP are OK. But bubbling them up into their callers
isn't as clean as I'd like. Having more callers with good names
may be the way to go. */
linker) then DIE_READER_FUNC will not get called. */
static void
init_and_read_dies_worker (struct dwarf2_per_cu_data *this_cu,
int use_existing_cu, int keep,
die_reader_func_ftype *die_reader_func,
void *data)
init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu,
int use_existing_cu, int keep,
die_reader_func_ftype *die_reader_func,
void *data)
{
struct objfile *objfile = dwarf2_per_objfile->objfile;
struct dwarf2_section_info *section = this_cu->info_or_types_section;
@ -3666,8 +3660,6 @@ init_and_read_dies_worker (struct dwarf2_per_cu_data *this_cu,
if (use_existing_cu)
gdb_assert (keep);
if (this_cu->is_debug_types)
gdb_assert (! use_existing_cu);
cleanups = make_cleanup (null_cleanup, NULL);
@ -3918,43 +3910,6 @@ init_and_read_dies_worker (struct dwarf2_per_cu_data *this_cu,
do_cleanups (cleanups);
}
/* Main entry point for reading a CU.
Do all the work necessary to initialize THIS_CU->cu and read in its DIE(s).
If the CU defers to a DWO file, read the DWO file as well.
If USE_EXISTING_CU is non-zero, and THIS_CU->cu is non-NULL, then use it.
Otherwise, a new CU is allocated with xmalloc.
If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to
read_in_chain. Otherwise the dwarf2_cu data is freed at the end. */
static void
init_cu_and_read_dies (struct dwarf2_per_cu_data *this_cu,
int use_existing_cu, int keep,
die_reader_func_ftype *die_reader_func,
void *data)
{
init_and_read_dies_worker (this_cu, use_existing_cu, keep,
die_reader_func, data);
}
/* Main entry point for reading a TU.
Do all the work necessary to initialize THIS_CU->cu and read in its DIE(s).
If the TU defers to a DWO file, read the DWO file as well.
If KEEP is non-zero, then if we allocated a dwarf2_cu we add it to
read_in_chain. Otherwise the dwarf2_cu data is freed at the end. */
static void
init_tu_and_read_dies (struct dwarf2_per_cu_data *this_cu,
int keep,
die_reader_func_ftype *die_reader_func,
void *data)
{
gdb_assert (this_cu->is_debug_types);
init_and_read_dies_worker (this_cu, 0, keep, die_reader_func, data);
}
/* Read CU/TU THIS_CU in section SECTION,
but do not follow DW_AT_GNU_dwo_name if present.
DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed to
@ -4176,8 +4131,8 @@ process_psymtab_comp_unit (struct dwarf2_per_cu_data *this_cu)
free_one_cached_comp_unit (this_cu);
gdb_assert (! this_cu->is_debug_types);
init_cu_and_read_dies (this_cu, 0, 0, process_psymtab_comp_unit_reader,
NULL);
init_cutu_and_read_dies (this_cu, 0, 0, process_psymtab_comp_unit_reader,
NULL);
/* Age out any secondary CUs. */
age_cached_comp_units ();
@ -4192,6 +4147,7 @@ process_psymtab_type_unit (void **slot, void *info)
struct signatured_type *sig_type = (struct signatured_type *) *slot;
struct dwarf2_per_cu_data *per_cu = &sig_type->per_cu;
gdb_assert (per_cu->is_debug_types);
gdb_assert (info == NULL);
/* If this compilation unit was already read in, free the
@ -4202,8 +4158,8 @@ process_psymtab_type_unit (void **slot, void *info)
if (per_cu->cu != NULL)
free_one_cached_comp_unit (per_cu);
gdb_assert (per_cu->is_debug_types);
init_tu_and_read_dies (per_cu, 0, process_psymtab_comp_unit_reader, NULL);
init_cutu_and_read_dies (per_cu, 0, 0, process_psymtab_comp_unit_reader,
NULL);
/* Age out any secondary CUs. */
age_cached_comp_units ();
@ -4303,10 +4259,7 @@ load_partial_comp_unit_reader (const struct die_reader_specs *reader,
static void
load_partial_comp_unit (struct dwarf2_per_cu_data *this_cu)
{
if (this_cu->is_debug_types)
init_tu_and_read_dies (this_cu, 1, load_partial_comp_unit_reader, NULL);
else
init_cu_and_read_dies (this_cu, 0, 1, load_partial_comp_unit_reader, NULL);
init_cutu_and_read_dies (this_cu, 1, 1, load_partial_comp_unit_reader, NULL);
}
/* Create a list of all compilation units in OBJFILE.
@ -5315,7 +5268,7 @@ load_full_comp_unit (struct dwarf2_per_cu_data *this_cu)
{
gdb_assert (! this_cu->is_debug_types);
init_cu_and_read_dies (this_cu, 1, 1, load_full_comp_unit_reader, NULL);
init_cutu_and_read_dies (this_cu, 1, 1, load_full_comp_unit_reader, NULL);
}
/* Add a DIE to the delayed physname list. */
@ -11176,11 +11129,14 @@ find_partial_die (sect_offset offset, struct dwarf2_cu *cu)
if (pd == NULL && per_cu->load_all_dies == 0)
{
/* FIXME: The testsuite doesn't trigger this code path.
http://sourceware.org/bugzilla/show_bug.cgi?id=13961 */
free_one_cached_comp_unit (per_cu);
per_cu->load_all_dies = 1;
/* This is nasty. When we reread the DIEs, somewhere up the call chain
THIS_CU->cu may already be in use. So we can't just free it and
replace its DIEs with the ones we read in. Instead, we leave those
DIEs alone (which can still be in use, e.g. in scan_partial_symbols),
and clobber THIS_CU->cu->partial_dies with the hash table for the new
set. */
load_partial_comp_unit (per_cu);
pd = find_partial_die_in_comp_unit (offset, per_cu->cu);
@ -15913,7 +15869,7 @@ read_signatured_type (struct signatured_type *sig_type)
gdb_assert (per_cu->is_debug_types);
gdb_assert (per_cu->cu == NULL);
init_tu_and_read_dies (per_cu, 1, read_signatured_type_reader, NULL);
init_cutu_and_read_dies (per_cu, 0, 1, read_signatured_type_reader, NULL);
}
/* Decode simple location descriptions.

6
gdb/testsuite/ChangeLog
View File

@ -1,3 +1,9 @@
2012-04-30 Doug Evans <dje@google.com>
PR testsuite/13961
* gdb.dwarf2/pr13961.S: New file.
* gdb.dwarf2/pr13961.exp: New file.
2012-04-29 Yao Qi <yao@codesourcery.com>
* gdb.dwarf2/dw2-ifort-parameter.exp: Use proc `dwarf2_support'.

355
gdb/testsuite/gdb.dwarf2/pr13961.S Normal file
View File

@ -0,0 +1,355 @@
/* Copyright 2012 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/>. */
/* Testcase to exercise the code path in bug 13961.
Compiled from:
class foo
{
public:
int bar;
};
foo baz;
int
main ()
{
return 0;
}
And then manually edited to insert the necessary DW_AT_specification
entries to trigger the desired code path.
There's no real need to make this architecture-specific, so it has been
further hand-edited to support that.
*/
.file "pr13961.cc"
.globl baz
.bss
.align 4
.type baz, @object
.size baz, 4
baz:
.zero 4
.text
.Ltext0:
.globl main
.type main, @function
main:
.LFB0:
.4byte 0
.LFE0:
.size main, .-main
.Letext0:
.section .debug_types,"",@progbits
.Ldebug_types0:
.4byte .Ltu_end - .Ltu_start /* Length of Compilation Unit Info */
.Ltu_start:
.2byte 0x4 /* DWARF version number */
.4byte .Ldebug_abbrev0 /* Offset Into Abbrev. Section */
.byte 0x4 /* Pointer Size (in bytes) */
.byte 0x19 /* Type Signature */
.byte 0x8b
.byte 0x7e
.byte 0xac
.byte 0xce
.byte 0xf1
.byte 0x22
.byte 0x90
.4byte .Ltu_class_type - .Ldebug_types0 /* Offset to Type DIE */
.uleb128 0x1 /* (DIE (0x17) DW_TAG_type_unit) */
.byte 0x4 /* DW_AT_language */
.byte 0x73 /* DW_AT_GNU_odr_signature */
.byte 0xea
.byte 0x85
.byte 0x23
.byte 0x75
.byte 0x8a
.byte 0x7e
.byte 0x87
.4byte .Ldebug_line0 /* DW_AT_stmt_list */
/* Manually inserted to have a DW_AT_specification refering to
something and appearing ahead of it. */
.uleb128 0x8 /* DW_TAG_class_type */
.4byte .Ltu_class_type - .Ldebug_types0
/* End of manual insertion */
.Ltu_class_type:
.uleb128 0x2 /* (DIE (0x25) DW_TAG_class_type) */
.ascii "foo\0" /* DW_AT_name */
.byte 0x4 /* DW_AT_byte_size */
.byte 0x1 /* DW_AT_decl_file (pr13961.cc) */
.byte 0x1 /* DW_AT_decl_line */
.4byte 0x3f /* DW_AT_sibling */
.uleb128 0x3 /* (DIE (0x31) DW_TAG_member) */
.ascii "bar\0" /* DW_AT_name */
.byte 0x1 /* DW_AT_decl_file (pr13961.cc) */
.byte 0x4 /* DW_AT_decl_line */
.4byte 0x3f /* DW_AT_type */
.byte 0 /* DW_AT_data_member_location */
.byte 0x1 /* DW_AT_accessibility */
.byte 0 /* end of children of DIE 0x25 */
.uleb128 0x4 /* (DIE (0x3f) DW_TAG_base_type) */
.byte 0x4 /* DW_AT_byte_size */
.byte 0x5 /* DW_AT_encoding */
.ascii "int\0" /* DW_AT_name */
.byte 0 /* end of children of DIE 0x17 */
.Ltu_end:
.section .debug_info,"",@progbits
.Ldebug_info0:
.4byte .Lcu_end - .Lcu_start /* Length of Compilation Unit Info */
.Lcu_start:
.2byte 0x4 /* DWARF version number */
.4byte .Ldebug_abbrev0 /* Offset Into Abbrev. Section */
.byte 0x4 /* Pointer Size (in bytes) */
.uleb128 0x5 /* (DIE (0xb) DW_TAG_compile_unit) */
.4byte .LASF0 /* DW_AT_producer: "GNU C++ 4.6.3 20120306" */
.byte 0x4 /* DW_AT_language */
.4byte .LASF1 /* DW_AT_name: "pr13961.cc" */
.4byte .LASF2 /* DW_AT_comp_dir: "." */
.4byte .Ltext0 /* DW_AT_low_pc */
.4byte .Letext0 /* DW_AT_high_pc */
.4byte .Ldebug_line0 /* DW_AT_stmt_list */
.Lint_base_type:
.uleb128 0x4 /* (DIE (0x25) DW_TAG_base_type) */
.byte 0x4 /* DW_AT_byte_size */
.byte 0x5 /* DW_AT_encoding */
.ascii "int\0" /* DW_AT_name */
.uleb128 0x6 /* (DIE (0x2c) DW_TAG_subprogram) */
/* DW_AT_external */
.4byte .LASF3 /* DW_AT_name: "main" */
.byte 0x1 /* DW_AT_decl_file (pr13961.cc) */
.byte 0xa /* DW_AT_decl_line */
.4byte 0x25 /* DW_AT_type */
.4byte .LFB0 /* DW_AT_low_pc */
.4byte .LFE0 /* DW_AT_high_pc */
.uleb128 0x1 /* DW_AT_frame_base */
.byte 0x9c /* DW_OP_call_frame_cfa */
/* DW_AT_GNU_all_call_sites */
.uleb128 0x7 /* (DIE (0x41) DW_TAG_variable) */
.ascii "baz\0" /* DW_AT_name */
.byte 0x1 /* DW_AT_decl_file (pr13961.cc) */
.byte 0x7 /* DW_AT_decl_line */
.byte 0x19 /* DW_AT_type */
.byte 0x8b
.byte 0x7e
.byte 0xac
.byte 0xce
.byte 0xf1
.byte 0x22
.byte 0x90
/* DW_AT_external */
.uleb128 0x5 /* DW_AT_location */
.byte 0x3 /* DW_OP_addr */
.4byte baz
/* Manually inserted to have a DW_AT_specification refering to
something and appearing ahead of it. */
.uleb128 0x8 /* DW_TAG_class_type */
.4byte .Lcu_class_type - .Ldebug_info0 /* DW_AT_specification */
.Lcu_int_type:
.uleb128 0x4 /* (DIE (0x3f) DW_TAG_base_type) */
.byte 0x4 /* DW_AT_byte_size */
.byte 0x5 /* DW_AT_encoding */
.ascii "int\0" /* DW_AT_name */
.Lcu_class_type:
.uleb128 0x2 /* (DIE (0x25) DW_TAG_class_type) */
.ascii "foo2\0" /* DW_AT_name */
.byte 0x4 /* DW_AT_byte_size */
.byte 0x1 /* DW_AT_decl_file (pr13961.cc) */
.byte 0x1 /* DW_AT_decl_line */
.4byte 0x3f /* DW_AT_sibling */
.uleb128 0x3 /* (DIE (0x31) DW_TAG_member) */
.ascii "bar\0" /* DW_AT_name */
.byte 0x1 /* DW_AT_decl_file (pr13961.cc) */
.byte 0x4 /* DW_AT_decl_line */
.4byte .Lcu_int_type - .Ldebug_info0 /* DW_AT_type */
.byte 0 /* DW_AT_data_member_location */
.byte 0x1 /* DW_AT_accessibility */
.byte 0 /* end of children of DIE 0x25 */
.uleb128 0x4 /* (DIE (0x3f) DW_TAG_base_type) */
.byte 0x4 /* DW_AT_byte_size */
.byte 0x5 /* DW_AT_encoding */
.ascii "int\0" /* DW_AT_name */
.byte 0 /* end of children of DIE 0x17 */
/* End of manual insertion */
.byte 0 /* end of children of DIE 0xb */
.Lcu_end:
.section .debug_abbrev,"",@progbits
.Ldebug_abbrev0:
.uleb128 0x1 /* (abbrev code) */
.uleb128 0x41 /* (TAG: DW_TAG_type_unit) */
.byte 0x1 /* DW_children_yes */
.uleb128 0x13 /* (DW_AT_language) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x210f /* (DW_AT_GNU_odr_signature) */
.uleb128 0x7 /* (DW_FORM_data8) */
.uleb128 0x10 /* (DW_AT_stmt_list) */
.uleb128 0x17 /* (DW_FORM_sec_offset) */
.byte 0
.byte 0
.uleb128 0x2 /* (abbrev code) */
.uleb128 0x2 /* (TAG: DW_TAG_class_type) */
.byte 0x1 /* DW_children_yes */
.uleb128 0x3 /* (DW_AT_name) */
.uleb128 0x8 /* (DW_FORM_string) */
.uleb128 0xb /* (DW_AT_byte_size) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x3a /* (DW_AT_decl_file) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x3b /* (DW_AT_decl_line) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x1 /* (DW_AT_sibling) */
.uleb128 0x13 /* (DW_FORM_ref4) */
.byte 0
.byte 0
.uleb128 0x3 /* (abbrev code) */
.uleb128 0xd /* (TAG: DW_TAG_member) */
.byte 0 /* DW_children_no */
.uleb128 0x3 /* (DW_AT_name) */
.uleb128 0x8 /* (DW_FORM_string) */
.uleb128 0x3a /* (DW_AT_decl_file) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x3b /* (DW_AT_decl_line) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x49 /* (DW_AT_type) */
.uleb128 0x13 /* (DW_FORM_ref4) */
.uleb128 0x38 /* (DW_AT_data_member_location) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x32 /* (DW_AT_accessibility) */
.uleb128 0xb /* (DW_FORM_data1) */
.byte 0
.byte 0
.uleb128 0x4 /* (abbrev code) */
.uleb128 0x24 /* (TAG: DW_TAG_base_type) */
.byte 0 /* DW_children_no */
.uleb128 0xb /* (DW_AT_byte_size) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x3e /* (DW_AT_encoding) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x3 /* (DW_AT_name) */
.uleb128 0x8 /* (DW_FORM_string) */
.byte 0
.byte 0
.uleb128 0x5 /* (abbrev code) */
.uleb128 0x11 /* (TAG: DW_TAG_compile_unit) */
.byte 0x1 /* DW_children_yes */
.uleb128 0x25 /* (DW_AT_producer) */
.uleb128 0xe /* (DW_FORM_strp) */
.uleb128 0x13 /* (DW_AT_language) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x3 /* (DW_AT_name) */
.uleb128 0xe /* (DW_FORM_strp) */
.uleb128 0x1b /* (DW_AT_comp_dir) */
.uleb128 0xe /* (DW_FORM_strp) */
.uleb128 0x11 /* (DW_AT_low_pc) */
.uleb128 0x1 /* (DW_FORM_addr) */
.uleb128 0x12 /* (DW_AT_high_pc) */
.uleb128 0x1 /* (DW_FORM_addr) */
.uleb128 0x10 /* (DW_AT_stmt_list) */
.uleb128 0x17 /* (DW_FORM_sec_offset) */
.byte 0
.byte 0
.uleb128 0x6 /* (abbrev code) */
.uleb128 0x2e /* (TAG: DW_TAG_subprogram) */
.byte 0 /* DW_children_no */
.uleb128 0x3f /* (DW_AT_external) */
.uleb128 0x19 /* (DW_FORM_flag_present) */
.uleb128 0x3 /* (DW_AT_name) */
.uleb128 0xe /* (DW_FORM_strp) */
.uleb128 0x3a /* (DW_AT_decl_file) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x3b /* (DW_AT_decl_line) */
.uleb128 0xb /* (DW_FORM_data1) */
.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 0x18 /* (DW_FORM_exprloc) */
.uleb128 0x2117 /* (DW_AT_GNU_all_call_sites) */
.uleb128 0x19 /* (DW_FORM_flag_present) */
.byte 0
.byte 0
.uleb128 0x7 /* (abbrev code) */
.uleb128 0x34 /* (TAG: DW_TAG_variable) */
.byte 0 /* DW_children_no */
.uleb128 0x3 /* (DW_AT_name) */
.uleb128 0x8 /* (DW_FORM_string) */
.uleb128 0x3a /* (DW_AT_decl_file) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x3b /* (DW_AT_decl_line) */
.uleb128 0xb /* (DW_FORM_data1) */
.uleb128 0x49 /* (DW_AT_type) */
.uleb128 0x20 /* (DW_FORM_ref_sig8) */
.uleb128 0x3f /* (DW_AT_external) */
.uleb128 0x19 /* (DW_FORM_flag_present) */
.uleb128 0x2 /* (DW_AT_location) */
.uleb128 0x18 /* (DW_FORM_exprloc) */
.byte 0
.byte 0
/* Manually inserted. */
.uleb128 0x8 /* abbrev code */
.uleb128 0x2 /* DW_TAG_class_type */
.byte 0x0 /* DW_has_children_no */
.uleb128 0x47 /* DW_AT_specification */
.uleb128 0x13 /* DW_FORM_ref4 */
.byte 0x0 /* Terminator */
.byte 0x0 /* Terminator */
/* End of manual insertion. */
.byte 0
.section .debug_aranges,"",@progbits
.4byte 0x1c /* Length of Address Ranges Info */
.2byte 0x2 /* DWARF Version */
.4byte .Ldebug_info0 /* Offset of Compilation Unit Info */
.byte 0x4 /* Size of Address */
.byte 0 /* Size of Segment Descriptor */
.2byte 0 /* Pad to 8 byte boundary */
.2byte 0
.4byte .Ltext0 /* Address */
.4byte .Letext0-.Ltext0 /* Length */
.4byte 0
.4byte 0
.section .debug_line,"",@progbits
.Ldebug_line0:
.section .debug_str,"MS",@progbits,1
.LASF0:
.string "GNU C++ 4.6.3 20120306"
.LASF2:
.string "."
.LASF1:
.string "pr13961.cc"
.LASF3:
.string "main"

36
gdb/testsuite/gdb.dwarf2/pr13961.exp Normal file
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@ -0,0 +1,36 @@
# Copyright 2012 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/>.
# A testcase to trigger the code path in bug 13961.
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 "pr13961"
set srcfile ${testfile}.S
set binfile ${testfile}.x
if { [prepare_for_testing ${testfile}.exp ${binfile} ${srcfile}] == -1 } {
return -1
}
gdb_test "break main" "Breakpoint.*at.*"
# If we get this far gdb didn't crash.
pass $testfile