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Summary:
Addressing https://bugs.llvm.org/show_bug.cgi?id=37265.
Implements [class.copy]/33 of coroutines TS.
When the criteria for elision of a copy/move operation are met, but not
for an exception-declaration, and the object to be copied is designated by an
lvalue, or when the expression in a return or co_return statement is a
(possibly parenthesized) id-expression that names an object with automatic
storage duration declared in the body or parameter-declaration-clause of the
innermost enclosing function or lambda-expression, overload resolution to select
the constructor for the copy or the return_value overload to call is first
performed as if the object were designated by an rvalue.
Patch by Tanoy Sinha!
Reviewers: modocache, GorNishanov
Reviewed By: modocache, GorNishanov
Subscribers: cfe-commits
Differential Revision: https://reviews.llvm.org/D51741
llvm-svn: 343949
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