c0e1ad779f
This makes sure we try to process declaration DIEs that are erroneously
present in the index. Until bd5c6367bd, clang was emitting index
entries for declaration DIEs with DW_AT_signature attributes. This makes
sure to avoid returning those DIEs as the definitions of a type, but
also makes sure to pass through DIEs referring to static constexpr
member variables, which is a (probably nonconforming) extension used by
dsymutil.
It adds test cases for both of the scenarios. It is essentially a
recommit of #91808.
170 lines
9.4 KiB
ArmAsm
170 lines
9.4 KiB
ArmAsm
## Check that lldb can locate a static constant variable when its declaration is
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## referenced by a debug_names index. This is a non-conforming extension used by
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## dsymutil.
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# RUN: llvm-mc -triple=x86_64-pc-linux -filetype=obj %s > %t
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# RUN: %lldb %t -o "target variable Class::constant" \
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# RUN: -o "expr -l c++ -- Class::constant" -o exit | FileCheck %s
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# CHECK: (lldb) target variable Class::constant
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# CHECK-NEXT: (const int) Class::constant = 47
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# CHECK: (lldb) expr -l c++ -- Class::constant
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# CHECK-NEXT: (const int) $0 = 47
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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 8 # DW_FORM_string
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.byte 19 # DW_AT_language
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.byte 5 # DW_FORM_data2
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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 2 # DW_TAG_class_type
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.byte 1 # DW_CHILDREN_yes
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.byte 54 # DW_AT_calling_convention
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.byte 11 # DW_FORM_data1
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.byte 3 # DW_AT_name
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.byte 14 # DW_FORM_strp
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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 4 # Abbreviation Code
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.byte 52 # DW_TAG_variable
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.byte 0 # DW_CHILDREN_no
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.byte 3 # DW_AT_name
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.byte 14 # DW_FORM_strp
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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 60 # DW_AT_declaration
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.byte 25 # DW_FORM_flag_present
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.byte 28 # DW_AT_const_value
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.byte 13 # DW_FORM_sdata
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 5 # Abbreviation Code
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.byte 38 # DW_TAG_const_type
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.byte 0 # DW_CHILDREN_no
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.byte 73 # DW_AT_type
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.byte 19 # DW_FORM_ref4
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.byte 0 # EOM(1)
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.byte 0 # EOM(2)
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.byte 6 # 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 14 # DW_FORM_strp
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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:0x40 DW_TAG_compile_unit
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.asciz "Hand-written DWARF" # DW_AT_producer
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.short 33 # DW_AT_language
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.LClass:
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.byte 3 # Abbrev [3] 0x29:0x10 DW_TAG_class_type
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.byte 5 # DW_AT_calling_convention
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.long .Linfo_string4 # DW_AT_name
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.byte 1 # DW_AT_byte_size
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.Lvariable:
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.byte 4 # Abbrev [4] 0x2f:0x9 DW_TAG_variable
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.long .Linfo_string5 # DW_AT_name
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.long .Lconst_int-.Lcu_begin0 # DW_AT_type
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# DW_AT_external
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# DW_AT_declaration
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.byte 47 # DW_AT_const_value
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.byte 0 # End Of Children Mark
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.Lconst_int:
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.byte 5 # Abbrev [5] 0x39:0x5 DW_TAG_const_type
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.long .Lint-.Lcu_begin0 # DW_AT_type
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.Lint:
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.byte 6 # Abbrev [6] 0x3e:0x4 DW_TAG_base_type
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.long .Linfo_string6 # 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_str,"MS",@progbits,1
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.Linfo_string4:
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.asciz "Class"
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.Linfo_string5:
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.asciz "constant"
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.Linfo_string6:
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.asciz "int"
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.section .debug_names,"",@progbits
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.long .Lnames_end0-.Lnames_start0 # Header: unit length
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.Lnames_start0:
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.short 5 # Header: version
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.short 0 # Header: padding
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.long 1 # Header: compilation unit count
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.long 0 # Header: local type unit count
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.long 0 # Header: foreign type unit count
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.long 0 # Header: bucket count
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.long 3 # Header: name count
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.long .Lnames_abbrev_end0-.Lnames_abbrev_start0 # Header: abbreviation table size
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.long 8 # Header: augmentation string size
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.ascii "LLVM0700" # Header: augmentation string
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.long .Lcu_begin0 # Compilation unit 0
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.long .Linfo_string4 # String: Class
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.long .Linfo_string5 # String: constant
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.long .Linfo_string6 # String: int
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.long .Lnames0-.Lnames_entries0
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.long .Lnames3-.Lnames_entries0
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.long .Lnames1-.Lnames_entries0
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.Lnames_abbrev_start0:
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.byte 1 # Abbrev code
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.byte 2 # DW_TAG_class_type
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.byte 3 # DW_IDX_die_offset
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.byte 19 # DW_FORM_ref4
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.byte 0 # End of abbrev
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.byte 0 # End of abbrev
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.byte 2 # Abbrev code
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.byte 52 # DW_TAG_variable
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.byte 3 # DW_IDX_die_offset
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.byte 19 # DW_FORM_ref4
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.byte 0 # End of abbrev
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.byte 0 # End of abbrev
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.byte 3 # Abbrev code
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.byte 36 # DW_TAG_base_type
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.byte 3 # DW_IDX_die_offset
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.byte 19 # DW_FORM_ref4
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.byte 0 # End of abbrev
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.byte 0 # End of abbrev
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.byte 0 # End of abbrev list
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.Lnames_abbrev_end0:
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.Lnames_entries0:
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.Lnames0:
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.byte 1 # Abbreviation code
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.long .LClass-.Lcu_begin0 # DW_IDX_die_offset
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.byte 0 # DW_IDX_parent
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# End of list: Class
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.Lnames3:
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.byte 2 # Abbreviation code
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.long .Lvariable-.Lcu_begin0 # DW_IDX_die_offset
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.byte 0 # DW_IDX_parent
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# End of list: constant
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.Lnames1:
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.byte 3 # Abbreviation code
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.long .Lint-.Lcu_begin0 # DW_IDX_die_offset
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.byte 0 # DW_IDX_parent
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# End of list: int
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.Lnames_end0:
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