/* Copyright 2012-2015 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 . */ /* Testcase to exercise the code path in bug 13961 for Fission. http://gcc.gnu.org/wiki/DebugFission 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 "fission-reread.cc" .globl baz .data /* Previously this used .bss, but it's not portable. */ .align 4 .type baz, %object .size baz, 4 baz: .zero 4 .text .Ltext0: .globl main .type main, %function main: .LFB0: .file 1 "fission-reread.cc" .loc 1 11 0 .4byte 0 .LFE0: .size main, .-main .Letext0: .section .debug_types.dwo .Ltu_start_dwo: .4byte .Ltu_end_dwo - .Ltu_start_dwo - 4 /* Length of Compilation Unit Info */ .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 - .Ltu_start_dwo /* 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 .Lskeleton_debug_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 - .Ltu_start_dwo /* 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 (fission-reread.cc) */ .byte 0x1 /* DW_AT_decl_line */ .4byte .Ltu_int - .Ltu_start_dwo /* DW_AT_sibling */ .uleb128 0x3 /* (DIE (0x31) DW_TAG_member) */ .ascii "bar\0" /* DW_AT_name */ .byte 0x1 /* DW_AT_decl_file (fission-reread.cc) */ .byte 0x4 /* DW_AT_decl_line */ .4byte .Ltu_int - .Ltu_start_dwo /* DW_AT_type */ .byte 0 /* DW_AT_data_member_location */ .byte 0x1 /* DW_AT_accessibility */ .byte 0 /* end of children of DIE 0x25 */ .Ltu_int: .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_dwo: .section .debug_types .Ltu_start: .4byte .Ltu_end - .Ltu_start - 4 /* Length of Type Unit Info */ .2byte 0x4 /* DWARF version number */ .4byte .Lskeleton_debug_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 0 /* Offset to Type DIE */ .uleb128 0x2 /* (DIE (0) DW_TAG_type_unit) */ .ascii "/tmp/src/gdb/testsuite\0" /* DW_AT_comp_dir */ .ascii "fission-reread.dwo\0" /* DW_AT_GNU_dwo_name */ .4byte .Ldebug_pubnames0 /* DW_AT_GNU_pubnames */ .4byte .Ldebug_pubtypes0 /* DW_AT_GNU_pubtypes */ .4byte .Ldebug_addr0 /* DW_AT_GNU_addr_base */ .Ltu_end: .section .debug_info.dwo .Lcu_start_dwo: .4byte .Lcu_end_dwo - .Lcu_start_dwo - 4 /* Length of Compilation Unit Info */ .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) */ .ascii "GNU C++ 4.6.x-fission\0" /* DW_AT_producer */ .byte 0x4 /* DW_AT_language */ .ascii "gdb.dwarf2/fission-reread.cc\0" /* DW_AT_name */ .ascii "/tmp/src/gdb/testsuite\0" /* DW_AT_comp_dir */ .byte 1 /* DW_AT_GNU_dwo_id */ .byte 2 .byte 3 .byte 4 .byte 5 .byte 6 .byte 7 .byte 8 .Lcu_int: .uleb128 0x4 /* (DIE (0x7f) DW_TAG_base_type) */ .byte 0x4 /* DW_AT_byte_size */ .byte 0x5 /* DW_AT_encoding */ .ascii "int\0" /* DW_AT_name */ .uleb128 0x6 /* (DIE (0x86) DW_TAG_subprogram) */ /* DW_AT_external */ .ascii "main\0" /* DW_AT_name */ .byte 0x1 /* DW_AT_decl_file (fission-reread.cc) */ .byte 0xa /* DW_AT_decl_line */ .4byte .Lcu_int - .Lcu_start_dwo /* DW_AT_type */ .uleb128 0 /* DW_AT_low_pc */ .4byte .LFE0-.LFB0 /* DW_AT_high_pc */ .uleb128 0x1 /* DW_AT_frame_base */ .byte 0x9c /* DW_OP_call_frame_cfa */ .uleb128 0x7 /* (DIE (0x9d) DW_TAG_variable) */ .ascii "baz\0" /* DW_AT_name */ .byte 0x1 /* DW_AT_decl_file (fission-reread.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 0x2 /* DW_AT_location */ .byte 0xfb /* DW_OP_GNU_addr_index */ .uleb128 0x1 /* (index into .debug_addr) */ .byte 0 /* end of children of DIE 0xb */ .Lcu_end_dwo: .section .debug_info .Lskeleton_debug_info0: .Lcu_start: .4byte .Lcu_end - .Lcu_start - 4 /* Length of Compilation Unit Info */ .2byte 0x4 /* DWARF version number */ .4byte .Lskeleton_debug_abbrev0 /* Offset Into Abbrev. Section */ .byte 0x4 /* Pointer Size (in bytes) */ .uleb128 0x1 /* (DIE (0) DW_TAG_compile_unit) */ .4byte .Ltext0 /* DW_AT_low_pc */ .4byte .Letext0-.Ltext0 /* DW_AT_high_pc */ .4byte .Ldebug_line0 /* DW_AT_stmt_list */ .ascii "/tmp/src/gdb/testsuite\0" /* DW_AT_comp_dir */ .ascii "fission-reread.dwo\0" /* DW_AT_GNU_dwo_name */ .4byte .Ldebug_pubnames0 /* DW_AT_GNU_pubnames */ .4byte .Ldebug_pubtypes0 /* DW_AT_GNU_pubtypes */ .4byte .Ldebug_addr0 /* DW_AT_GNU_addr_base */ .byte 1 /* DW_AT_GNU_dwo_id */ .byte 2 .byte 3 .byte 4 .byte 5 .byte 6 .byte 7 .byte 8 .Lcu_end: .section .debug_abbrev .Lskeleton_debug_abbrev0: .uleb128 0x1 /* (abbrev code) */ .uleb128 0x11 /* (TAG: DW_TAG_compile_unit) */ .byte 0 /* DW_children_no */ .uleb128 0x11 /* (DW_AT_low_pc) */ .uleb128 0x1 /* (DW_FORM_addr) */ .uleb128 0x12 /* (DW_AT_high_pc) */ .uleb128 0x6 /* (DW_FORM_data4) */ .uleb128 0x10 /* (DW_AT_stmt_list) */ .uleb128 0x17 /* (DW_FORM_sec_offset) */ .uleb128 0x1b /* (DW_AT_comp_dir) */ .uleb128 0x8 /* (DW_FORM_string) */ .uleb128 0x2130 /* (DW_AT_GNU_dwo_name) */ .uleb128 0x8 /* (DW_FORM_string) */ .uleb128 0x2134 /* (DW_AT_GNU_pubnames) */ .uleb128 0x17 /* (DW_FORM_sec_offset) */ .uleb128 0x2135 /* (DW_AT_GNU_pubtypes) */ .uleb128 0x17 /* (DW_FORM_sec_offset) */ .uleb128 0x2133 /* (DW_AT_GNU_addr_base) */ .uleb128 0x17 /* (DW_FORM_sec_offset) */ .uleb128 0x2131 /* (DW_AT_GNU_dwo_id) */ .uleb128 0x7 /* (DW_FORM_data8) */ .byte 0 .byte 0 .uleb128 0x2 /* (abbrev code) */ .uleb128 0x41 /* (TAG: DW_TAG_type_unit) */ .byte 0 /* DW_children_no */ .uleb128 0x1b /* (DW_AT_comp_dir) */ .uleb128 0x8 /* (DW_FORM_string) */ .uleb128 0x2130 /* (DW_AT_GNU_dwo_name) */ .uleb128 0x8 /* (DW_FORM_string) */ .uleb128 0x2134 /* (DW_AT_GNU_pubnames) */ .uleb128 0x17 /* (DW_FORM_sec_offset) */ .uleb128 0x2135 /* (DW_AT_GNU_pubtypes) */ .uleb128 0x17 /* (DW_FORM_sec_offset) */ .uleb128 0x2133 /* (DW_AT_GNU_addr_base) */ .uleb128 0x17 /* (DW_FORM_sec_offset) */ .byte 0 .byte 0 .byte 0 /* end of skeleton .debug_abbrev */ .section .debug_abbrev.dwo .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 0x8 /* (DW_FORM_string) */ .uleb128 0x13 /* (DW_AT_language) */ .uleb128 0xb /* (DW_FORM_data1) */ .uleb128 0x3 /* (DW_AT_name) */ .uleb128 0x8 /* (DW_FORM_string) */ .uleb128 0x1b /* (DW_AT_comp_dir) */ .uleb128 0x8 /* (DW_FORM_string) */ .uleb128 0x2131 /* (DW_AT_GNU_dwo_id) */ .uleb128 0x7 /* (DW_FORM_data8) */ .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 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 0x11 /* (DW_AT_low_pc) */ .uleb128 0x1f01 /* (DW_FORM_GNU_addr_index) */ .uleb128 0x12 /* (DW_AT_high_pc) */ .uleb128 0x6 /* (DW_FORM_data4) */ .uleb128 0x40 /* (DW_AT_frame_base) */ .uleb128 0x18 /* (DW_FORM_exprloc) */ .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_pubnames .Ldebug_pubnames0: .4byte 0x1f /* Length of Public Names Info */ .2byte 0x2 /* DWARF Version */ .4byte .Lskeleton_debug_info0 /* Offset of Compilation Unit Info */ .4byte 0xb0 /* Compilation Unit Length */ .4byte 0x86 /* DIE offset */ .ascii "main\0" /* external name */ .4byte 0x9d /* DIE offset */ .ascii "baz\0" /* external name */ .4byte 0 .section .debug_pubtypes .Ldebug_pubtypes0: .4byte 0x1e /* Length of Public Type Names Info */ .2byte 0x2 /* DWARF Version */ .4byte .Lskeleton_debug_info0 /* Offset of Compilation Unit Info */ .4byte 0xb0 /* Compilation Unit Length */ .4byte 0x7f /* DIE offset */ .ascii "int\0" /* external name */ .4byte 0x25 /* DIE offset */ .ascii "foo\0" /* external name */ .4byte 0 .section .debug_aranges .4byte 0x1c /* Length of Address Ranges Info */ .2byte 0x2 /* DWARF Version */ .4byte .Lskeleton_debug_info0 /* Offset of Compilation Unit Info */ .byte 0x4 /* Size of Address */ .byte 0 /* Size of Segment Descriptor */ .2byte 0 /* Pad to 16 byte boundary */ .2byte 0 .4byte .Ltext0 /* Address */ .4byte .Letext0-.Ltext0 /* Length */ .4byte 0 .4byte 0 .section .debug_line .Ldebug_line0: .section .debug_line.dwo .Lskeleton_debug_line0: .4byte .LELT0-.LSLT0 /* Length of Source Line Info */ .LSLT0: .2byte 0x4 /* DWARF Version */ .4byte .LELTP0-.LASLTP0 /* Prolog Length */ .LASLTP0: .byte 0x1 /* Minimum Instruction Length */ .byte 0x1 /* Maximum Operations Per Instruction */ .byte 0x1 /* Default is_stmt_start flag */ .byte 0xf6 /* Line Base Value (Special Opcodes) */ .byte 0xf5 /* Line Range Value (Special Opcodes) */ .byte 0xa /* Special Opcode Base */ .byte 0 /* opcode: 0x1 has 0 args */ .byte 0x1 /* opcode: 0x2 has 1 args */ .byte 0x1 /* opcode: 0x3 has 1 args */ .byte 0x1 /* opcode: 0x4 has 1 args */ .byte 0x1 /* opcode: 0x5 has 1 args */ .byte 0 /* opcode: 0x6 has 0 args */ .byte 0 /* opcode: 0x7 has 0 args */ .byte 0 /* opcode: 0x8 has 0 args */ .byte 0x1 /* opcode: 0x9 has 1 args */ .byte 0 /* End directory table */ .ascii "fission-reread.cc\0" /* File Entry: 0x1 */ .uleb128 0 .uleb128 0 .uleb128 0 .byte 0 /* End file name table */ .LELTP0: .LELT0: .section .debug_addr .Ldebug_addr0: .4byte .LFB0 /* DW_AT_low_pc */ .4byte baz /* DW_AT_location */