David Majnemer 6d1780cfb8 [MS ABI] Explicit specialization of static data members are weak ...

Normally, explicit specializations are treated like strong external
definitions.  However, MSVC treats explicit specializations of static
data members as weak.  MSVC 2013's <regex> implementation has such an
explicit specialization which leads to clang emitting a strong
definition in each translation unit which includes it.  Tweak clang's
linkage calculation to give such entities GVA_StrongODR linkage instead.

This fixes PR24165.

llvm-svn: 242592

2015-07-17 23:36:49 +00:00

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