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llvm-project/lld/test/COFF/duplicate-dwarf.s

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[LLD] [COFF] Try to report source locations for duplicate symbols This fixes the second part of PR42407. For files with dwarf debug info, it manually loads and iterates .debug_info to find the declared location of variables, to allow reporting them. (This matches the corresponding code in the ELF linker.) For functions, it uses the existing getFileLineDwarf which uses LLVMSymbolizer for translating addresses to file lines. In object files with codeview debug info, only the source location of duplicate functions is printed. (And even there, only for the first input file. The getFileLineCodeView function requires the object file to be fully loaded and initialized to properly resolve source locations, but duplicate symbols are reported at a stage when the second object file isn't fully loaded yet.) Differential Revision: https://reviews.llvm.org/D68975 llvm-svn: 375218
2019-10-18 18:43:15 +08:00
# REQUIRES: x86
# RUN: llvm-mc -triple=i686-windows-gnu -filetype=obj -o %t.o %s
# RUN: cp %t.o %t.dupl.o
# RUN: not lld-link -lldmingw -out:%t.exe %t.o %t.dupl.o -entry:_Z4funcv 2>&1 | FileCheck %s
# CHECK: error: duplicate symbol: func()
# CHECK-NEXT: >>> defined at /path/to/src{{[/\\]}}dupl.cpp:6
# CHECK-NEXT: >>> {{.*}}.o
# CHECK-NEXT: >>> defined at /path/to/src{{[/\\]}}dupl.cpp:6
# CHECK-NEXT: >>> {{.*}}.o
# CHECK-EMPTY:
# CHECK-NEXT: error: duplicate symbol: _var
# CHECK-NEXT: >>> defined at /path/to/src{{[/\\]}}dupl.cpp:1
# CHECK-NEXT: >>> {{.*}}.o
# CHECK-NEXT: >>> defined at /path/to/src{{[/\\]}}dupl.cpp:1
# CHECK-NEXT: >>> {{.*}}.o
# CHECK-EMPTY:
# CHECK-NEXT: error: duplicate symbol: A::namespaceVar
# CHECK-NEXT: >>> defined at /path/to/src{{[/\\]}}dupl.cpp:3
# CHECK-NEXT: >>> {{.*}}.o
# CHECK-NEXT: >>> defined at /path/to/src{{[/\\]}}dupl.cpp:3
# CHECK-NEXT: >>> {{.*}}.o
.text
.file "dupl.cpp"
.file 1 "/path/to/src" "dupl.cpp"
.def __Z4funcv;
.globl __Z4funcv # -- Begin function _Z4funcv
__Z4funcv: # @_Z4funcv
Lfunc_begin0:
.loc 1 5 0 # dupl.cpp:5:0
# %bb.0: # %entry
.loc 1 6 1 prologue_end # dupl.cpp:6:1
retl
Lfunc_end0:
# -- End function
.bss
.globl _var # @var
_var:
.long 0 # 0x0
.globl __ZN1A12namespaceVarE # @_ZN1A12namespaceVarE
__ZN1A12namespaceVarE:
.long 0 # 0x0
.section .debug_str,"dr"
Linfo_string:
Linfo_string0:
.asciz "var"
Linfo_string1:
.asciz "int"
Linfo_string2:
.asciz "A"
Linfo_string3:
.asciz "namespaceVar"
Linfo_string4:
.asciz "_ZN1A12namespaceVarE"
Linfo_string5:
.asciz "_Z4funcv"
Linfo_string6:
.asciz "func"
.section .debug_abbrev,"dr"
Lsection_abbrev:
.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 16 # DW_AT_stmt_list
.byte 23 # DW_FORM_sec_offset
.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 52 # DW_TAG_variable
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 2 # DW_AT_location
.byte 24 # DW_FORM_exprloc
.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 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 4 # Abbreviation Code
.byte 57 # DW_TAG_namespace
.byte 1 # DW_CHILDREN_yes
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 5 # Abbreviation Code
.byte 52 # DW_TAG_variable
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 14 # DW_FORM_strp
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 2 # DW_AT_location
.byte 24 # DW_FORM_exprloc
.byte 110 # DW_AT_linkage_name
.byte 14 # DW_FORM_strp
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 6 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 0 # DW_CHILDREN_no
.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 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 0 # EOM(3)
.section .debug_info,"dr"
Lsection_info:
Lcu_begin0:
.long Ldebug_info_end0-Ldebug_info_start0 # Length of Unit
Ldebug_info_start0:
.short 4 # DWARF version number
.secrel32 Lsection_abbrev # Offset Into Abbrev. Section
.byte 4 # Address Size (in bytes)
.byte 1 # Abbrev [1] 0xb:0x64 DW_TAG_compile_unit
.byte 0 # DW_AT_producer
.short 33 # DW_AT_language
.byte 0 # DW_AT_name
.secrel32 Lline_table_start0 # DW_AT_stmt_list
.long Lfunc_begin0 # DW_AT_low_pc
.long Lfunc_end0-Lfunc_begin0 # DW_AT_high_pc
.byte 2 # Abbrev [2] 0x26:0x11 DW_TAG_variable
.secrel32 Linfo_string0 # DW_AT_name
.secrel32 Linfo_type_int # DW_AT_type
# DW_AT_external
.byte 1 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.byte 5 # DW_AT_location
.byte 3
.long _var
Linfo_type_int:
.byte 3 # Abbrev [3] 0x37:0x7 DW_TAG_base_type
.secrel32 Linfo_string1 # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 4 # Abbrev [4] 0x3e:0x1b DW_TAG_namespace
.secrel32 Linfo_string2 # DW_AT_name
.byte 5 # Abbrev [5] 0x43:0x15 DW_TAG_variable
.secrel32 Linfo_string3 # DW_AT_name
.secrel32 Linfo_type_int # DW_AT_type
# DW_AT_external
.byte 1 # DW_AT_decl_file
.byte 3 # DW_AT_decl_line
.byte 5 # DW_AT_location
.byte 3
.long __ZN1A12namespaceVarE
.secrel32 Linfo_string4 # DW_AT_linkage_name
.byte 0 # End Of Children Mark
.byte 6 # Abbrev [6] 0x59:0x15 DW_TAG_subprogram
.long Lfunc_begin0 # DW_AT_low_pc
.long Lfunc_end0-Lfunc_begin0 # DW_AT_high_pc
.byte 1 # DW_AT_frame_base
.byte 84
.secrel32 Linfo_string5 # DW_AT_linkage_name
.secrel32 Linfo_string6 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 5 # DW_AT_decl_line
# DW_AT_external
.byte 0 # End Of Children Mark
Ldebug_info_end0:
.section .debug_line,"dr"
Lline_table_start0: