https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89949
Bug ID: 89949
Summary: Internal compiler error with lambda as template
argument
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: john.boyer at tutanota dot com
Target Milestone: ---
Since C++20 a template parameter type can be any LiteralType that has strong
structural equality.
Lambdas are classified as a LiteralType since C++17.
Reproducible example of the internal compiler error:
https://godbolt.org/z/UP3gG2.
Relevant cppreference pages:
https://en.cppreference.com/w/cpp/language/template_parameters
https://en.cppreference.com/w/cpp/named_req/LiteralType
