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Sema::InstantiateClass should check only exception specs added during
class instantiation and ignore already present delayed specs. This fixes
a case where we instantiate a class before parsing member initializers,
check exceptions for a different class and fail to find a member
initializer. Which is required for comparing exception specs for
explicitly-defaulted and implicit default constructor. With the fix we
are still checking exception specs but only after member initializers
are present.
Removing errors in crash-unparsed-exception.cpp is acceptable according
to discussion in PR24000 because other compilers accept code in
crash-unparsed-exception.cpp as valid.
rdar://problem/34167492
Reviewers: davide, rsmith
Reviewed By: rsmith
Subscribers: dim, cfe-commits
Differential Revision: https://reviews.llvm.org/D37881
llvm-svn: 313906
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