http://llvm.org/bugs/show_bug.cgi?id=19876
Bug ID: 19876
Summary: Generic lambdas used within NSDMI's cause crash when
they capture 'this'
Product: clang
Version: trunk
Hardware: PC
OS: Windows NT
Status: NEW
Severity: normal
Priority: P
Component: C++1y
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
The following C++1y code results in a crash:
struct X {
int m = 10;
int n = [this](auto) { return m; }(20);
};
This is because when implicitly instantiating the generic lambda's call
operator specialization body, Sema gets confused and is unable to determine the
current 'this' type when transforming the MemberExpr 'm'.
That is SemaExprCXX.cpp:Sema::getCurrentThisType() is unable to calculate that
the this type should be X* since it looks for the nearest enclosing
FunctionDeclDC - which is obviously null.
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