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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
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