# 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 /dev/null 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:
Codebase Browser
llvm