1# REQUIRES: x86 2# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux -dwarf-version=5 %s -o %t.o 3# RUN: not ld.lld %t.o -o /dev/null 2>&1 | FileCheck %s 4 5# When compiling with -ffunction-sections, .debug_line may contain descriptions 6# of locations from the different text sections. Until relocated such 7# descriptions might contain overlapping offsets. Check LLD is able to report 8# the error locations correctly in this case. 9 10# CHECK: error: undefined symbol: foo() 11# CHECK-NEXT: >>> referenced by test.cpp:2 12# CHECK-NEXT: >>> {{.*}}.o:(bar()) 13# CHECK-NEXT: >>> referenced by test.cpp:3 14# CHECK-NEXT: >>> {{.*}}.o:(baz()) 15 16# The code below is the reduced version of the output 17# from the following invocation and source: 18# 19# // test.cpp: 20# int foo(); 21# int bar() { return foo(); } 22# int baz() { return foo(); } 23# 24# clang -gdwarf-5 -ffunction-sections test.cpp -o test.s -S 25 26.text 27.file "test.cpp" 28.section .text._Z3barv,"ax",@progbits 29.globl _Z3barv 30.type _Z3barv,@function 31_Z3barv: 32.Lfunc_begin0: 33 .file 0 "/path" "test.cpp" md5 0x9ff11a8404ab4d032ee2dd4f5f8c4140 34 .loc 0 2 0 # test.cpp:2:0 35 .loc 0 2 20 prologue_end # test.cpp:2:20 36 callq _Z3foov 37 .loc 0 2 13 is_stmt 0 # test.cpp:2:13 38.Lfunc_end0: 39.size _Z3barv, .Lfunc_end0-_Z3barv 40 # -- End function 41.section .text._Z3bazv,"ax",@progbits 42.globl _Z3bazv # -- Begin function _Z3bazv 43 .type _Z3bazv,@function 44_Z3bazv: # @_Z3bazv 45.Lfunc_begin1: 46 .loc 0 3 0 is_stmt 1 # test.cpp:3:0 47 .loc 0 3 20 prologue_end # test.cpp:3:20 48 callq _Z3foov 49 .loc 0 3 13 is_stmt 0 # test.cpp:3:13 50.Lfunc_end1: 51 .size _Z3bazv, .Lfunc_end1-_Z3bazv 52 53.section .debug_str,"MS",@progbits,1 54.Linfo_string0: 55 .asciz "stub" 56 57.section .debug_str_offsets,"",@progbits 58 .long 8 59 .short 5 60 .short 0 61.Lstr_offsets_base0: 62 .long .Linfo_string0 63 64.section .debug_abbrev,"",@progbits 65 .byte 1 # Abbreviation Code 66 .byte 17 # DW_TAG_compile_unit 67 .byte 1 # DW_CHILDREN_yes 68 .byte 37 # DW_AT_producer 69 .byte 37 # DW_FORM_strx1 70 .byte 19 # DW_AT_language 71 .byte 5 # DW_FORM_data2 72 .byte 3 # DW_AT_name 73 .byte 37 # DW_FORM_strx1 74 .byte 114 # DW_AT_str_offsets_base 75 .byte 23 # DW_FORM_sec_offset 76 .byte 16 # DW_AT_stmt_list 77 .byte 23 # DW_FORM_sec_offset 78 .byte 27 # DW_AT_comp_dir 79 .byte 37 # DW_FORM_strx1 80 .byte 115 # DW_AT_addr_base 81 .byte 23 # DW_FORM_sec_offset 82 .byte 17 # DW_AT_low_pc 83 .byte 1 # DW_FORM_addr 84 .byte 85 # DW_AT_ranges 85 .byte 35 # DW_FORM_rnglistx 86 .byte 116 # DW_AT_rnglists_base 87 .byte 23 # DW_FORM_sec_offset 88 .byte 0 # EOM(1) 89 .byte 0 # EOM(2) 90 .byte 2 # Abbreviation Code 91 .byte 46 # DW_TAG_subprogram 92 .byte 0 # DW_CHILDREN_no 93 .byte 17 # DW_AT_low_pc 94 .byte 27 # DW_FORM_addrx 95 .byte 18 # DW_AT_high_pc 96 .byte 6 # DW_FORM_data4 97 .byte 64 # DW_AT_frame_base 98 .byte 24 # DW_FORM_exprloc 99 .byte 110 # DW_AT_linkage_name 100 .byte 37 # DW_FORM_strx1 101 .byte 3 # DW_AT_name 102 .byte 37 # DW_FORM_strx1 103 .byte 58 # DW_AT_decl_file 104 .byte 11 # DW_FORM_data1 105 .byte 59 # DW_AT_decl_line 106 .byte 11 # DW_FORM_data1 107 .byte 73 # DW_AT_type 108 .byte 19 # DW_FORM_ref4 109 .byte 63 # DW_AT_external 110 .byte 25 # DW_FORM_flag_present 111 .byte 0 # EOM(1) 112 .byte 0 # EOM(2) 113 .byte 3 # Abbreviation Code 114 .byte 36 # DW_TAG_base_type 115 .byte 0 # DW_CHILDREN_no 116 .byte 3 # DW_AT_name 117 .byte 37 # DW_FORM_strx1 118 .byte 62 # DW_AT_encoding 119 .byte 11 # DW_FORM_data1 120 .byte 11 # DW_AT_byte_size 121 .byte 11 # DW_FORM_data1 122 .byte 0 # EOM(1) 123 .byte 0 # EOM(2) 124 .byte 0 # EOM(3) 125 126.section .debug_info,"",@progbits 127.Lcu_begin0: 128 .long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit 129.Ldebug_info_start0: 130 .short 5 # DWARF version number 131 .byte 1 # DWARF Unit Type 132 .byte 8 # Address Size (in bytes) 133 .long .debug_abbrev # Offset Into Abbrev. Section 134 .byte 1 # Abbrev [1] 0xc:0x44 DW_TAG_compile_unit 135 .byte 0 # DW_AT_producer 136 .short 4 # DW_AT_language 137 .byte 0 # DW_AT_name 138 .long .Lstr_offsets_base0 # DW_AT_str_offsets_base 139 .long .Lline_table_start0 # DW_AT_stmt_list 140 .byte 2 # DW_AT_comp_dir 141 .long 0 # DW_AT_addr_base 142 .quad 0 # DW_AT_low_pc 143 .byte 0 # DW_AT_ranges 144 .long 0 # DW_AT_rnglists_base 145 .byte 2 # Abbrev [2] 0x2b:0x10 DW_TAG_subprogram 146 .byte 0 # DW_AT_low_pc 147 .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc 148 .byte 1 # DW_AT_frame_base 149 .byte 86 150 .byte 3 # DW_AT_linkage_name 151 .byte 0 # DW_AT_name 152 .byte 1 # DW_AT_decl_file 153 .byte 2 # DW_AT_decl_line 154 .long 75 # DW_AT_type 155 # DW_AT_external 156 .byte 2 # Abbrev [2] 0x3b:0x10 DW_TAG_subprogram 157 .byte 1 # DW_AT_low_pc 158 .long .Lfunc_end1-.Lfunc_begin1 # DW_AT_high_pc 159 .byte 1 # DW_AT_frame_base 160 .byte 86 161 .byte 6 # DW_AT_linkage_name 162 .byte 0 # DW_AT_name 163 .byte 1 # DW_AT_decl_file 164 .byte 3 # DW_AT_decl_line 165 .long 75 # DW_AT_type 166 # DW_AT_external 167 .byte 3 # Abbrev [3] 0x4b:0x4 DW_TAG_base_type 168 .byte 0 # DW_AT_name 169 .byte 5 # DW_AT_encoding 170 .byte 4 # DW_AT_byte_size 171 .byte 0 # End Of Children Mark 172.Ldebug_info_end0: 173 174.section .debug_line,"",@progbits 175.Lline_table_start0: 176