Commit Graph

3 Commits

Author SHA1 Message Date
Eric Fiselier aedcbf898b Recommit r276548 - Make pair/tuples assignment operators SFINAE properly.
I think I've solved issues with is_assignable and references to incomplete
types. The updated patch adds tests for this case.

llvm-svn: 276603
2016-07-25 02:36:42 +00:00
Eric Fiselier 189f88ca35 Revert r276548 - Make pair/tuples assignment operators SFINAE properly.
This is a breaking change. The SFINAE required is instantiated the second
the class is instantiated, and this can cause hard SFINAE errors
when applied to references to incomplete types. Ex.

struct IncompleteType;
extern IncompleteType it;
std::tuple<IncompleteType&> t(it); // SFINAE will blow up.

llvm-svn: 276598
2016-07-25 01:45:07 +00:00
Eric Fiselier 904a5d7007 Make pair/tuples assignment operators SFINAE properly.
llvm-svn: 276548
2016-07-24 05:51:11 +00:00