[libcxx-commits] [PATCH] D58025: [libcxx] MSVC fails to compile `operator valarray<template>`

[Danila Kutenin via Phabricator via libcxx-commits]

danlark created this revision.
danlark added a reviewer: mclow.lists.
Herald added a reviewer: EricWF.
Herald added a subscriber: ldionne.

MSVC fails to compile template `operator valarray` because (i believe) the type is not seen in template argument of the operator.

Minimal example:
https://gcc.godbolt.org/z/sPpQFL

I believe it is a compiler bug but workaround is not that complex so I hope it can be merged anyway


Repository:
  rCXX libc++

https://reviews.llvm.org/D58025

Files:
  include/valarray


Index: include/valarray
===================================================================
--- include/valarray
+++ include/valarray
@@ -2730,7 +2730,7 @@
 };
 
 template<class _ValExpr>
-__val_expr<_ValExpr>::operator valarray<__val_expr::result_type>() const
+__val_expr<_ValExpr>::operator valarray<typename __val_expr<_ValExpr>::result_type>() const
 {
     valarray<result_type> __r;
     size_t __n = __expr_.size();


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