forked from OSchip/llvm-project
0374bf0d07
This patch emits a more appropriate (but still noisy) diagnostic stream when a lambda-expression is encountered within a non-type default argument.
For e.g. template<int N = ([] { return 5; }())> int f();
As opposed to complaining that a lambda expression is not allowed in an unevaluated operand, the patch complains about the lambda being forbidden in a constant expression context (which will be allowed in C++17 now that they have been accepted by EWG, unless of course CWG or national bodies (that have so far shown no signs of concern) rise in protest)
As I start submitting patches for constexpr lambdas (http://wg21.link/P0170R0) under C++1z (OK'd by Richard Smith at Kona), this will be one less change to make.
Thanks!
llvm-svn: 253431
|
||
|---|---|---|
| .. | ||
| basic | ||
| class | ||
| class.access | ||
| class.derived | ||
| concepts-ts/dcl.dcl/dcl.spec/dcl.spec.concept | ||
| conv | ||
| dcl.dcl | ||
| dcl.decl | ||
| drs | ||
| except | ||
| expr | ||
| lex | ||
| over | ||
| special | ||
| stmt.stmt | ||
| temp | ||