# REQUIRES: x86 # RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux -dwarf-version=5 %s -o %t.o # RUN: not ld.lld %t.o -o %t1 2>&1 | FileCheck %s # When compiling with -ffunction-sections, .debug_line may contain descriptions # of locations from the different text sections. Until relocated such # descriptions might contain overlapping offsets. Check LLD is able to report # the error locations correctly in this case. # CHECK: error: undefined symbol: foo() # CHECK-NEXT: >>> referenced by test.cpp:2 # CHECK-NEXT: >>> {{.*}}.o:(bar()) # CHECK-NEXT: >>> referenced by test.cpp:3 # CHECK-NEXT: >>> {{.*}}.o:(baz()) # The code below is the reduced version of the output # from the following invocation and source: # # // test.cpp: # int foo(); # int bar() { return foo(); } # int baz() { return foo(); } # # clang -gdwarf-5 -ffunction-sections test.cpp -o test.s -S .text .file "test.cpp" .section .text._Z3barv,"ax",@progbits .globl _Z3barv .type _Z3barv,@function _Z3barv: .Lfunc_begin0: .file 0 "/path" "test.cpp" md5 0x9ff11a8404ab4d032ee2dd4f5f8c4140 .loc 0 2 0 # test.cpp:2:0 .loc 0 2 20 prologue_end # test.cpp:2:20 callq _Z3foov .loc 0 2 13 is_stmt 0 # test.cpp:2:13 .Lfunc_end0: .size _Z3barv, .Lfunc_end0-_Z3barv # -- End function .section .text._Z3bazv,"ax",@progbits .globl _Z3bazv # -- Begin function _Z3bazv .type _Z3bazv,@function _Z3bazv: # @_Z3bazv .Lfunc_begin1: .loc 0 3 0 is_stmt 1 # test.cpp:3:0 .loc 0 3 20 prologue_end # test.cpp:3:20 callq _Z3foov .loc 0 3 13 is_stmt 0 # test.cpp:3:13 .Lfunc_end1: .size _Z3bazv, .Lfunc_end1-_Z3bazv .section .debug_str,"MS",@progbits,1 .Linfo_string0: .asciz "stub" .section .debug_str_offsets,"",@progbits .long 8 .short 5 .short 0 .Lstr_offsets_base0: .long .Linfo_string0 .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 37 # DW_FORM_strx1 .byte 19 # DW_AT_language .byte 5 # DW_FORM_data2 .byte 3 # DW_AT_name .byte 37 # DW_FORM_strx1 .byte 114 # DW_AT_str_offsets_base .byte 23 # DW_FORM_sec_offset .byte 16 # DW_AT_stmt_list .byte 23 # DW_FORM_sec_offset .byte 27 # DW_AT_comp_dir .byte 37 # DW_FORM_strx1 .byte 115 # DW_AT_addr_base .byte 23 # DW_FORM_sec_offset .byte 17 # DW_AT_low_pc .byte 1 # DW_FORM_addr .byte 85 # DW_AT_ranges .byte 35 # DW_FORM_rnglistx .byte 116 # DW_AT_rnglists_base .byte 23 # DW_FORM_sec_offset .byte 0 # EOM(1) .byte 0 # EOM(2) .byte 2 # Abbreviation Code .byte 46 # DW_TAG_subprogram .byte 0 # DW_CHILDREN_no .byte 17 # DW_AT_low_pc .byte 27 # DW_FORM_addrx .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 37 # DW_FORM_strx1 .byte 3 # DW_AT_name .byte 37 # DW_FORM_strx1 .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 36 # DW_TAG_base_type .byte 0 # DW_CHILDREN_no .byte 3 # DW_AT_name .byte 37 # DW_FORM_strx1 .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 .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit .Ldebug_info_start0: .short 5 # DWARF version number .byte 1 # DWARF Unit Type .byte 8 # Address Size (in bytes) .long .debug_abbrev # Offset Into Abbrev. Section .byte 1 # Abbrev [1] 0xc:0x44 DW_TAG_compile_unit .byte 0 # DW_AT_producer .short 4 # DW_AT_language .byte 0 # DW_AT_name .long .Lstr_offsets_base0 # DW_AT_str_offsets_base .long .Lline_table_start0 # DW_AT_stmt_list .byte 2 # DW_AT_comp_dir .long 0 # DW_AT_addr_base .quad 0 # DW_AT_low_pc .byte 0 # DW_AT_ranges .long 0 # DW_AT_rnglists_base .byte 2 # Abbrev [2] 0x2b:0x10 DW_TAG_subprogram .byte 0 # DW_AT_low_pc .long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc .byte 1 # DW_AT_frame_base .byte 86 .byte 3 # DW_AT_linkage_name .byte 0 # DW_AT_name .byte 1 # DW_AT_decl_file .byte 2 # DW_AT_decl_line .long 75 # DW_AT_type # DW_AT_external .byte 2 # Abbrev [2] 0x3b:0x10 DW_TAG_subprogram .byte 1 # DW_AT_low_pc .long .Lfunc_end1-.Lfunc_begin1 # DW_AT_high_pc .byte 1 # DW_AT_frame_base .byte 86 .byte 6 # DW_AT_linkage_name .byte 0 # DW_AT_name .byte 1 # DW_AT_decl_file .byte 3 # DW_AT_decl_line .long 75 # DW_AT_type # DW_AT_external .byte 3 # Abbrev [3] 0x4b:0x4 DW_TAG_base_type .byte 0 # DW_AT_name .byte 5 # DW_AT_encoding .byte 4 # DW_AT_byte_size .byte 0 # End Of Children Mark .Ldebug_info_end0: .section .debug_line,"",@progbits .Lline_table_start0: