[Bug c++/68926] [4.9/5/6 Regression] decltype and sfinae to check for template instance availability fails to compile

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68926

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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   Target Milestone|---                         |4.9.4