faisalv added inline comments.
================
Comment at: include/clang/Sema/Sema.h:894-895
+ /// \brief Whether lambda expressions are forbidden here.
+ bool IsLambdaExprForbidden;
+
----------------
rsmith wrote:
> Rather than adding a flag, how about we have two different kinds of
> `ExpressionEvaluationContext` for constant expressions: a generic "constant
> expression" context and a "constant expression in signature" context?
But not all lambdas that appear in template arguments are in signatures - so
should we split it into ConstantEvaluated,
ConstantEvaluatedInSignatureOrTemplateArg ?
================
Comment at: lib/Parse/ParseDecl.cpp:6254
+ NumElements = ParseConstantExpression(NotTypeCast,
+ /*IsLambdaExprForbidden=*/D.getContext() == D.PrototypeContext);
} else {
----------------
I suppose we should forbid these in a lambda parameter declaration clause too?
Repository:
rL LLVM
https://reviews.llvm.org/D28510
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