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2210b8bc74
The condition !AddrPool.empty() is tested before attachRangesOrLowHighPC(), which may add an entry to AddrPool. We emit DW_AT_low_pc (DW_FORM_addrx) but may incorrectly omit DW_AT_addr_base for LineTablesOnly. This can be easily reproduced: clang -gdwarf-5 -gmlt -c a.cc Fix this by moving !AddrPool.empty() below. This was discovered while investigating an lld crash (fixed by D61889) on such object files: ld.lld --gdb-index a.o Reviewed By: probinson Differential Revision: https://reviews.llvm.org/D61891 llvm-svn: 360678
22 lines
771 B
LLVM
22 lines
771 B
LLVM
; RUN: %llc_dwarf -filetype=obj %s -o - | llvm-dwarfdump -v -debug-info - | FileCheck %s
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;; In DWARF v5, emit DW_AT_addr_base as DW_AT_addr_base is used for DW_AT_low_pc.
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; CHECK: DW_AT_low_pc [DW_FORM_addrx]
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; CHECK: DW_AT_addr_base
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define i64 @foo() !dbg !7 {
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entry:
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ret i64 0
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, emissionKind: LineTablesOnly, enums: !2, nameTableKind: None)
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!1 = !DIFile(filename: "a.cc", directory: "/tmp")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 5}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!7 = distinct !DISubprogram(name: "a", scope: !1, file: !1, line: 22, type: !8, scopeLine: 22, unit: !0, retainedNodes: !2)
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!8 = !DISubroutineType(types: !2)
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