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Fangrui Song
5481fc6d44
DebugInfo: Temporarily work around -gsplit-dwarf + LTO .debug_gnu_pubnames regression after D94976
`-flto -gsplit-dwarf -g -O[123]` may create .debug_gnu_pubnames with 0 DIE offset entries. llvm-dwarfdump -debug-gnu-pubnames/ld.lld --gdb-index errors for that. ``` .section .debug_gnu_pubnames,"",@progbits .long .LpubNames_end2-.LpubNames_begin2 # Length of Public Names Info .LpubNames_begin2: .short 2 # DWARF Version .long .Lcu_begin2 # Offset of Compilation Unit Info .long 57 # Compilation Unit Length .long 0 # DIE offset .byte 16 # Attributes: TYPE, EXTERNAL .asciz "absl" # External Name .long 0 # DIE offset .byte 16 # Attributes: TYPE, EXTERNAL .asciz "absl::base_internal" # External Name .long 0 # End Mark ```
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