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1ccde53342
--gdb-index currently crashes when reading a translation unit with DWARF v5 .debug_loclists . Call stack: ``` SyntheticSections.cpp GdbIndexSection::create SyntheticSections.cpp readAddressAreas DWARFUnit.cpp DWARFUnit::tryExtractDIEsIfNeeded DWARFListTable.cpp DWARFListTableHeader::extract ... DWARFDataExtractor.cpp DWARFDataExtractor::getRelocatedValue lld/ELF/DWARF.cpp LLDDwarfObj<ELFT>::find (sec.sec is nullptr) ... ``` This patch adds support for .debug_loclists to make `DWARFUnit::tryExtractDIEsIfNeeded` happy. Building --gdb-index does not need .debug_loclists Reviewed By: dblaikie, grimar Differential Revision: https://reviews.llvm.org/D79061
38 lines
1.3 KiB
ArmAsm
38 lines
1.3 KiB
ArmAsm
# REQUIRES: x86
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## Regression test that we don't crash on DWARF v5 .debug_loclists
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# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o %t.o
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# RUN: ld.lld --gdb-index %t.o -o /dev/null
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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 0 # DW_CHILDREN_no
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.ascii "\214\001" # DW_AT_loclists_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 0
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.section .debug_info,"",@progbits
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.Lcu_begin0:
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.long .Lcu_end0-.Lcu_begin0-4 # Length of Unit
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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
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.long 0 # Offset Into Abbrev. Section
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.byte 1 # Abbrev [1] DW_TAG_compile_unit
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.long .Lloclists_table_base0 # DW_AT_loclists_base
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.Lcu_end0:
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.section .debug_loclists,"",@progbits
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.long .Ldebug_loclist_table_end0-.Ldebug_loclist_table_start0 # Length
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.Ldebug_loclist_table_start0:
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.short 5 # Version
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.byte 8 # Address size
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.byte 0 # Segment selector size
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.long 0 # Offset entry count
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.Lloclists_table_base0:
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.byte 0 # DW_LLE_end_of_list
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.Ldebug_loclist_table_end0:
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