[llvm-bugs] [Bug 40700] New: requires clause on a template alias is ignored (Concepts TS)

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=40700

            Bug ID: 40700
           Summary: requires clause on a template alias is ignored
                    (Concepts TS)
           Product: clang
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: C++2a
          Assignee: unassignedclangbugs at nondot.org
          Reporter: antoshkka at gmail.com
                CC: blitzrakete at gmail.com, erik.pilkington at gmail.com,
                    llvm-bugs at lists.llvm.org, richard-llvm at metafoo.co.uk

The following code compiles however it should not:

template<bool condition, typename T = void>
    requires(condition)
using enable_if_t = T;

template<typename T, typename = enable_if_t<sizeof(T) < 0>>
void foo();

void test() {
    foo<int>();
}

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