# This file was created by running dw2-bad-cfi.c # through 'gcc -g -dA -S', and then hand-editing # the CFI in "callee" to suit. .file "dw2-bad-cfi.c" .text .Ltext0: .globl callee .type callee, @function callee: .LFB0: .file 1 "dw2-bad-cfi.c" # dw2-bad-cfi.c:20 .loc 1 20 0 .cfi_startproc # BLOCK 2 seq:0 # PRED: ENTRY (fallthru) pushq %rbp /* .cfi_def_cfa_offset 16 .cfi_offset 6, -16 */ movq %rsp, %rbp /* .cfi_def_cfa_register 6 */ # dw2-bad-cfi.c:21 .loc 1 21 0 popq %rbp /* .cfi_def_cfa 7, 8 */ /* The bug we introduce is that the return address column is unspecified. In this case, there is no way to unwind. */ .cfi_undefined 6 .cfi_return_column 6 # SUCC: EXIT [100.0%] ret .cfi_endproc .LFE0: .size callee, .-callee .globl main .type main, @function main: .LFB1: # dw2-bad-cfi.c:25 .loc 1 25 0 .cfi_startproc # BLOCK 2 seq:0 # PRED: ENTRY (fallthru) pushq %rbp .cfi_def_cfa_offset 16 .cfi_offset 6, -16 movq %rsp, %rbp .cfi_def_cfa_register 6 # dw2-bad-cfi.c:26 .loc 1 26 0 call callee # dw2-bad-cfi.c:27 .loc 1 27 0 movl $0, %eax # dw2-bad-cfi.c:28 .loc 1 28 0 popq %rbp .cfi_def_cfa 7, 8 # SUCC: EXIT [100.0%] ret .cfi_endproc .LFE1: .size main, .-main .Letext0: .section .debug_info,"",@progbits .Ldebug_info0: .long 0x67 # Length of Compilation Unit Info .value 0x4 # DWARF version number .long .Ldebug_abbrev0 # Offset Into Abbrev. Section .byte 0x8 # Pointer Size (in bytes) .uleb128 0x1 # (DIE (0xb) DW_TAG_compile_unit) .long .LASF0 # DW_AT_producer: "GNU C 4.7.2 20121109 (Red Hat 4.7.2-8) -mtune=generic -march=x86-64 -g" .byte 0x1 # DW_AT_language .long .LASF1 # DW_AT_name: "dw2-bad-cfi.c" .long .LASF2 # DW_AT_comp_dir: "/home/tromey/gnu/gdb/devel/binutils-gdb/gdb/testsuite/gdb.dwarf2" .quad .Ltext0 # DW_AT_low_pc .quad .Letext0 # DW_AT_high_pc .long .Ldebug_line0 # DW_AT_stmt_list .uleb128 0x2 # (DIE (0x2d) DW_TAG_subprogram) # DW_AT_external .long .LASF3 # DW_AT_name: "callee" .byte 0x1 # DW_AT_decl_file (dw2-bad-cfi.c) .byte 0x13 # DW_AT_decl_line # DW_AT_prototyped .quad .LFB0 # DW_AT_low_pc .quad .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 0x3 # (DIE (0x46) DW_TAG_subprogram) # DW_AT_external .long .LASF4 # DW_AT_name: "main" .byte 0x1 # DW_AT_decl_file (dw2-bad-cfi.c) .byte 0x18 # DW_AT_decl_line # DW_AT_prototyped .long 0x63 # DW_AT_type .quad .LFB1 # DW_AT_low_pc .quad .LFE1 # DW_AT_high_pc .uleb128 0x1 # DW_AT_frame_base .byte 0x9c # DW_OP_call_frame_cfa # DW_AT_GNU_all_tail_call_sites .uleb128 0x4 # (DIE (0x63) 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 0xb .section .debug_abbrev,"",@progbits .Ldebug_abbrev0: .uleb128 0x1 # (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 0x2 # (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 0x27 # (DW_AT_prototyped) .uleb128 0x19 # (DW_FORM_flag_present) .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 0x3 # (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 0x27 # (DW_AT_prototyped) .uleb128 0x19 # (DW_FORM_flag_present) .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 0x2116 # (DW_AT_GNU_all_tail_call_sites) .uleb128 0x19 # (DW_FORM_flag_present) .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 .byte 0 .section .debug_aranges,"",@progbits .long 0x2c # Length of Address Ranges Info .value 0x2 # DWARF Version .long .Ldebug_info0 # Offset of Compilation Unit Info .byte 0x8 # Size of Address .byte 0 # Size of Segment Descriptor .value 0 # Pad to 16 byte boundary .value 0 .quad .Ltext0 # Address .quad .Letext0-.Ltext0 # Length .quad 0 .quad 0 .section .debug_line,"",@progbits .Ldebug_line0: .section .debug_str,"MS",@progbits,1 .LASF3: .string "callee" .LASF1: .string "dw2-bad-cfi.c" .LASF2: .string "/home/tromey/gnu/gdb/devel/binutils-gdb/gdb/testsuite/gdb.dwarf2" .LASF4: .string "main" .LASF0: .string "GNU C 4.7.2 20121109 (Red Hat 4.7.2-8) -mtune=generic -march=x86-64 -g" .ident "GCC: (GNU) 4.7.2 20121109 (Red Hat 4.7.2-8)" .section .note.GNU-stack,"",@progbits