forked from OSchip/llvm-project
[LLD] add test for line number info related to differrent .text sections
There is a bug for llvm-objdump which incorrectly reported line number info for object file if several .text sections presented. https://bugs.llvm.org/show_bug.cgi?id=40703 . This patch adds test for the same situation. Differential revision: https://reviews.llvm.org/D58357 llvm-svn: 355306
This commit is contained in:
Alexey Lapshin
parent
181afc7f3b
commit
ded118079b
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# REQUIRES: x86
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# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux -dwarf-version=5 %s -o %t.o
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# RUN: not ld.lld %t.o -o %t1 2>&1 | FileCheck %s
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# When compiling with -ffunction-sections, .debug_line may contain descriptions
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# of locations from the different text sections. Until relocated such
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# descriptions might contain overlapping offsets. Check LLD is able to report
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# the error locations correctly in this case.
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# CHECK: error: undefined symbol: foo()
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# CHECK-NEXT: >>> referenced by test.cpp:2
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# CHECK-NEXT: >>> {{.*}}.o:(bar())
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# CHECK: error: undefined symbol: foo()
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# CHECK-NEXT: >>> referenced by test.cpp:3
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# CHECK-NEXT: >>> {{.*}}.o:(baz())
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# The code below is the reduced version of the output
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# from the following invocation and source:
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#
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# // test.cpp:
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# int foo();
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# int bar() { return foo(); }
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# int baz() { return foo(); }
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#
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# clang -gdwarf-5 -ffunction-sections test.cpp -o test.s -S
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.text
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.file "test.cpp"
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.section .text._Z3barv,"ax",@progbits
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.globl _Z3barv
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.type _Z3barv,@function
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_Z3barv:
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.Lfunc_begin0:
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.file 0 "/path" "test.cpp" md5 0x9ff11a8404ab4d032ee2dd4f5f8c4140
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.file 1 "test.cpp" md5 0x9ff11a8404ab4d032ee2dd4f5f8c4140
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.loc 1 2 0 # test.cpp:2:0
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.loc 1 2 20 prologue_end # test.cpp:2:20
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callq _Z3foov
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.loc 1 2 13 is_stmt 0 # test.cpp:2:13
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.Lfunc_end0:
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.size _Z3barv, .Lfunc_end0-_Z3barv
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# -- End function
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.section .text._Z3bazv,"ax",@progbits
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.globl _Z3bazv # -- Begin function _Z3bazv
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.type _Z3bazv,@function
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_Z3bazv: # @_Z3bazv
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.Lfunc_begin1:
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.loc 1 3 0 is_stmt 1 # test.cpp:3:0
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.loc 1 3 20 prologue_end # test.cpp:3:20
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callq _Z3foov
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.loc 1 3 13 is_stmt 0 # test.cpp:3:13
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.Lfunc_end1:
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.size _Z3bazv, .Lfunc_end1-_Z3bazv
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.section .debug_str,"MS",@progbits,1
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.Linfo_string0:
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.asciz "stub"
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.section .debug_str_offsets,"",@progbits
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.long 8
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.short 5
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.short 0
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.Lstr_offsets_base0:
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.long .Linfo_string0
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.section .debug_abbrev,"",@progbits
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.byte 1 # Abbreviation Code
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.byte 17 # DW_TAG_compile_unit
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.byte 1 # DW_CHILDREN_yes
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.byte 37 # DW_AT_producer
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.byte 37 # DW_FORM_strx1
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.byte 19 # DW_AT_language
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.byte 5 # DW_FORM_data2
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.byte 3 # DW_AT_name
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.byte 37 # DW_FORM_strx1
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.byte 114 # DW_AT_str_offsets_base
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.byte 23 # DW_FORM_sec_offset
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.byte 16 # DW_AT_stmt_list
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.byte 23 # DW_FORM_sec_offset
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.byte 27 # DW_AT_comp_dir
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.byte 37 # DW_FORM_strx1
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.byte 115 # DW_AT_addr_base
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.byte 23 # DW_FORM_sec_offset
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.byte 17 # DW_AT_low_pc
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.byte 1 # DW_FORM_addr
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.byte 85 # DW_AT_ranges
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.byte 35 # DW_FORM_rnglistx
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.byte 116 # DW_AT_rnglists_base
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.byte 23 # DW_FORM_sec_offset
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 2 # Abbreviation Code
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.byte 46 # DW_TAG_subprogram
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.byte 0 # DW_CHILDREN_no
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.byte 17 # DW_AT_low_pc
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.byte 27 # DW_FORM_addrx
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.byte 18 # DW_AT_high_pc
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.byte 6 # DW_FORM_data4
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.byte 64 # DW_AT_frame_base
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.byte 24 # DW_FORM_exprloc
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.byte 110 # DW_AT_linkage_name
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.byte 37 # DW_FORM_strx1
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.byte 3 # DW_AT_name
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.byte 37 # DW_FORM_strx1
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.byte 58 # DW_AT_decl_file
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.byte 11 # DW_FORM_data1
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.byte 59 # DW_AT_decl_line
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.byte 11 # DW_FORM_data1
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.byte 73 # DW_AT_type
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.byte 19 # DW_FORM_ref4
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.byte 63 # DW_AT_external
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.byte 25 # DW_FORM_flag_present
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 3 # Abbreviation Code
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.byte 36 # DW_TAG_base_type
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.byte 0 # DW_CHILDREN_no
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.byte 3 # DW_AT_name
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.byte 37 # DW_FORM_strx1
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.byte 62 # DW_AT_encoding
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.byte 11 # DW_FORM_data1
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.byte 11 # DW_AT_byte_size
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.byte 11 # DW_FORM_data1
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 0 # EOM(3)
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.section .debug_info,"",@progbits
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.Lcu_begin0:
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.long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
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.Ldebug_info_start0:
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.short 5 # DWARF version number
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.byte 1 # DWARF Unit Type
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.byte 8 # Address Size (in bytes)
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.long .debug_abbrev # Offset Into Abbrev. Section
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.byte 1 # Abbrev [1] 0xc:0x44 DW_TAG_compile_unit
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.byte 0 # DW_AT_producer
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.short 4 # DW_AT_language
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.byte 0 # DW_AT_name
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.long .Lstr_offsets_base0 # DW_AT_str_offsets_base
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.long .Lline_table_start0 # DW_AT_stmt_list
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.byte 2 # DW_AT_comp_dir
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.long 0 # DW_AT_addr_base
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.quad 0 # DW_AT_low_pc
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.byte 0 # DW_AT_ranges
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.long 0 # DW_AT_rnglists_base
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.byte 2 # Abbrev [2] 0x2b:0x10 DW_TAG_subprogram
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.byte 0 # DW_AT_low_pc
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.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
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.byte 1 # DW_AT_frame_base
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.byte 86
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.byte 3 # DW_AT_linkage_name
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.byte 0 # DW_AT_name
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.byte 1 # DW_AT_decl_file
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.byte 2 # DW_AT_decl_line
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.long 75 # DW_AT_type
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# DW_AT_external
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.byte 2 # Abbrev [2] 0x3b:0x10 DW_TAG_subprogram
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.byte 1 # DW_AT_low_pc
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.long .Lfunc_end1-.Lfunc_begin1 # DW_AT_high_pc
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.byte 1 # DW_AT_frame_base
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.byte 86
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.byte 6 # DW_AT_linkage_name
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.byte 0 # DW_AT_name
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.byte 1 # DW_AT_decl_file
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.byte 3 # DW_AT_decl_line
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.long 75 # DW_AT_type
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# DW_AT_external
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.byte 3 # Abbrev [3] 0x4b:0x4 DW_TAG_base_type
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.byte 0 # DW_AT_name
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.byte 5 # DW_AT_encoding
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.byte 4 # DW_AT_byte_size
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.byte 0 # End Of Children Mark
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.Ldebug_info_end0:
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.section .debug_line,"",@progbits
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.Lline_table_start0:
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