Merge 2019-02 LWG Motion 4

P0340R3 Making std::underlying_type SFINAE-friendly Fixes #2696.
cplusplus · Mar 14, 2019 · 52f8ba7 · 52f8ba7
2 parents 2c41a2a + d21b0b3
commit 52f8ba7
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/source/utilities.tex b/source/utilities.tex
@@ -18183,9 +18183,10 @@
 \tcode{template<class T>}\br
  \tcode{struct underlying_type;}
  &
- The member typedef \tcode{type} names the underlying type
- of \tcode{T}.\br
- \requires{} \tcode{T} shall be a complete enumeration type\iref{dcl.enum} \\ \rowsep
+ If \tcode{T} is an enumeration type, the member typedef \tcode{type} names
+ the underlying type of \tcode{T}\iref{dcl.enum};
+ otherwise, there is no member \tcode{type}.\br
+ \mandates \tcode{T} is not an incomplete enumeration type. \\ \rowsep
 
 \tcode{template<class Fn,}\br
  \tcode{class... ArgTypes>}\br