| # REQUIRES: x86-registered-target |
| # RUN: llvm-mc -filetype=obj -triple=x86_64-pc-linux %s -o %t.o |
| # RUN: llvm-symbolizer 0x0 0x2 0x3 0x4 --obj=%t.o | FileCheck %s |
| # This test makes sure we don't attempt to access out of the line table boundaries |
| # if the last range is empty. |
| # Produced from the following program: |
| # int func(int a) { |
| # return 1 + a; |
| # } |
| # compiled with clang -O3 -g -S |
| # Edited by adding a redundant, empty last range. |
| # The line table (llvm-dwarfdump --debug-line) looks like: |
| # |
| # Address Line Column File ISA Discriminator Flags |
| # ------------------ ------ ------ ------ --- ------------- ------------- |
| # 0x0000000000000000 1 0 1 0 0 is_stmt |
| # 0x0000000000000000 2 12 1 0 0 is_stmt prologue_end |
| # 0x0000000000000003 2 3 1 0 0 |
| # 0x0000000000000003 3 3 1 0 0 |
| # 0x0000000000000004 3 3 1 0 0 end_sequence |
| # |
| # 0x0 should pick the second line in the table - line 2, col 12 |
| # CHECK: func |
| # CHECK: /scratch/a.cpp:2:12 |
| # 0x2 does not exist in the table, so we should pick the line with a |
| # lower address that describes the range - in this case, the second line. |
| # CHECK: func |
| # CHECK: /scratch/a.cpp:2:12 |
| # 0x3 also has a sequence of empty ranges, so we should pick the first range after |
| # skipping the empty ones. |
| # This also verifies we don't attempt to access outside boundaries. |
| # CHECK: func |
| # CHECK: /scratch/a.cpp:3:3 |
| # CHECK: ?? |
| # CHECK: ??:0:0 |
| |
| .text |
| .file "a.cpp" |
| .globl _Z4funci # -- Begin function _Z4funci |
| .p2align 4, 0x90 |
| .type _Z4funci,@function |
| _Z4funci: # @_Z4funci |
| .Lfunc_begin0: |
| .file 1 "/llvm-project" "/scratch/a.cpp" |
| .loc 1 1 0 # /scratch/a.cpp:1:0 |
| .cfi_startproc |
| # %bb.0: |
| #DEBUG_VALUE: func:a <- $edi |
| # kill: def $edi killed $edi def $rdi |
| #DEBUG_VALUE: func:a <- $edi |
| .loc 1 2 12 prologue_end # /scratch/a.cpp:2:12 |
| leal 1(%rdi), %eax |
| .loc 1 2 3 # /scratch/a.cpp:2:3 |
| .loc 1 3 3 is_stmt 0 # this forms an empty range torgether with the previous. |
| retq |
| .Ltmp0: |
| .Lfunc_end0: |
| .size _Z4funci, .Lfunc_end0-_Z4funci |
| .cfi_endproc |
| # -- End function |
| .section .debug_str,"MS",@progbits,1 |
| .Linfo_string0: |
| .asciz "clang version 7.0.1-6 (tags/RELEASE_701/final)" # string offset=0 |
| .Linfo_string1: |
| .asciz "/scratch/a.cpp" # string offset=47 |
| .Linfo_string2: |
| .asciz "/llvm-project" # string offset=97 |
| .Linfo_string3: |
| .asciz "_Z4funci" # string offset=146 |
| .Linfo_string4: |
| .asciz "func" # string offset=155 |
| .Linfo_string5: |
| .asciz "int" # string offset=160 |
| .Linfo_string6: |
| .asciz "a" # string offset=164 |
| .section .debug_loc,"",@progbits |
| .Ldebug_loc0: |
| .quad .Lfunc_begin0-.Lfunc_begin0 |
| .quad .Lfunc_end0-.Lfunc_begin0 |
| .short 1 # Loc expr size |
| .byte 85 # super-register DW_OP_reg5 |
| .quad 0 |
| .quad 0 |
| .section .debug_abbrev,"",@progbits |
| .byte 1 # Abbreviation Code |
| .byte 17 # DW_TAG_compile_unit |
| .byte 1 # DW_CHILDREN_yes |
| .byte 37 # DW_AT_producer |
| .byte 14 # DW_FORM_strp |
| .byte 19 # DW_AT_language |
| .byte 5 # DW_FORM_data2 |
| .byte 3 # DW_AT_name |
| .byte 14 # DW_FORM_strp |
| .byte 16 # DW_AT_stmt_list |
| .byte 23 # DW_FORM_sec_offset |
| .byte 27 # DW_AT_comp_dir |
| .byte 14 # DW_FORM_strp |
| .ascii "\264B" # DW_AT_GNU_pubnames |
| .byte 25 # DW_FORM_flag_present |
| .byte 17 # DW_AT_low_pc |
| .byte 1 # DW_FORM_addr |
| .byte 18 # DW_AT_high_pc |
| .byte 6 # DW_FORM_data4 |
| .byte 0 # EOM(1) |
| .byte 0 # EOM(2) |
| .byte 2 # Abbreviation Code |
| .byte 46 # DW_TAG_subprogram |
| .byte 1 # DW_CHILDREN_yes |
| .byte 17 # DW_AT_low_pc |
| .byte 1 # DW_FORM_addr |
| .byte 18 # DW_AT_high_pc |
| .byte 6 # DW_FORM_data4 |
| .byte 64 # DW_AT_frame_base |
| .byte 24 # DW_FORM_exprloc |
| .byte 110 # DW_AT_linkage_name |
| .byte 14 # DW_FORM_strp |
| .byte 3 # DW_AT_name |
| .byte 14 # DW_FORM_strp |
| .byte 58 # DW_AT_decl_file |
| .byte 11 # DW_FORM_data1 |
| .byte 59 # DW_AT_decl_line |
| .byte 11 # DW_FORM_data1 |
| .byte 73 # DW_AT_type |
| .byte 19 # DW_FORM_ref4 |
| .byte 63 # DW_AT_external |
| .byte 25 # DW_FORM_flag_present |
| .byte 0 # EOM(1) |
| .byte 0 # EOM(2) |
| .byte 3 # Abbreviation Code |
| .byte 5 # DW_TAG_formal_parameter |
| .byte 0 # DW_CHILDREN_no |
| .byte 2 # DW_AT_location |
| .byte 23 # DW_FORM_sec_offset |
| .byte 3 # DW_AT_name |
| .byte 14 # DW_FORM_strp |
| .byte 58 # DW_AT_decl_file |
| .byte 11 # DW_FORM_data1 |
| .byte 59 # DW_AT_decl_line |
| .byte 11 # DW_FORM_data1 |
| .byte 73 # DW_AT_type |
| .byte 19 # DW_FORM_ref4 |
| .byte 0 # EOM(1) |
| .byte 0 # EOM(2) |
| .byte 4 # Abbreviation Code |
| .byte 36 # DW_TAG_base_type |
| .byte 0 # DW_CHILDREN_no |
| .byte 3 # DW_AT_name |
| .byte 14 # DW_FORM_strp |
| .byte 62 # DW_AT_encoding |
| .byte 11 # DW_FORM_data1 |
| .byte 11 # DW_AT_byte_size |
| .byte 11 # DW_FORM_data1 |
| .byte 0 # EOM(1) |
| .byte 0 # EOM(2) |
| .byte 0 # EOM(3) |
| .section .debug_info,"",@progbits |
| .Lcu_begin0: |
| .long 91 # Length of Unit |
| .short 4 # DWARF version number |
| .long .debug_abbrev # Offset Into Abbrev. Section |
| .byte 8 # Address Size (in bytes) |
| .byte 1 # Abbrev [1] 0xb:0x54 DW_TAG_compile_unit |
| .long .Linfo_string0 # DW_AT_producer |
| .short 4 # DW_AT_language |
| .long .Linfo_string1 # DW_AT_name |
| .long .Lline_table_start0 # DW_AT_stmt_list |
| .long .Linfo_string2 # DW_AT_comp_dir |
| # DW_AT_GNU_pubnames |
| .quad .Lfunc_begin0 # DW_AT_low_pc |
| .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc |
| .byte 2 # Abbrev [2] 0x2a:0x2d DW_TAG_subprogram |
| .quad .Lfunc_begin0 # DW_AT_low_pc |
| .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc |
| .byte 1 # DW_AT_frame_base |
| .byte 87 |
| .long .Linfo_string3 # DW_AT_linkage_name |
| .long .Linfo_string4 # DW_AT_name |
| .byte 1 # DW_AT_decl_file |
| .byte 1 # DW_AT_decl_line |
| .long 87 # DW_AT_type |
| # DW_AT_external |
| .byte 3 # Abbrev [3] 0x47:0xf DW_TAG_formal_parameter |
| .long .Ldebug_loc0 # DW_AT_location |
| .long .Linfo_string6 # DW_AT_name |
| .byte 1 # DW_AT_decl_file |
| .byte 1 # DW_AT_decl_line |
| .long 87 # DW_AT_type |
| .byte 0 # End Of Children Mark |
| .byte 4 # Abbrev [4] 0x57:0x7 DW_TAG_base_type |
| .long .Linfo_string5 # DW_AT_name |
| .byte 5 # DW_AT_encoding |
| .byte 4 # DW_AT_byte_size |
| .byte 0 # End Of Children Mark |
| .section .debug_macinfo,"",@progbits |
| .byte 0 # End Of Macro List Mark |
| .section .debug_pubnames,"",@progbits |
| .long .LpubNames_end0-.LpubNames_begin0 # Length of Public Names Info |
| .LpubNames_begin0: |
| .short 2 # DWARF Version |
| .long .Lcu_begin0 # Offset of Compilation Unit Info |
| .long 95 # Compilation Unit Length |
| .long 42 # DIE offset |
| .asciz "func" # External Name |
| .long 0 # End Mark |
| .LpubNames_end0: |
| .section .debug_pubtypes,"",@progbits |
| .long .LpubTypes_end0-.LpubTypes_begin0 # Length of Public Types Info |
| .LpubTypes_begin0: |
| .short 2 # DWARF Version |
| .long .Lcu_begin0 # Offset of Compilation Unit Info |
| .long 95 # Compilation Unit Length |
| .long 87 # DIE offset |
| .asciz "int" # External Name |
| .long 0 # End Mark |
| .LpubTypes_end0: |
| |
| .ident "clang version 7.0.1-6 (tags/RELEASE_701/final)" |
| .section ".note.GNU-stack","",@progbits |
| .addrsig |
| .section .debug_line,"",@progbits |
| .Lline_table_start0: |
