[Bug c++/100640] New: GCC permits explicit instantiation of a constructor template with an explicit template argument list
richard-gccbugzilla at metafoo dot co.uk
gcc-bugzilla@gcc.gnu.org
Mon May 17 18:03:18 GMT 2021
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100640
Bug ID: 100640
Summary: GCC permits explicit instantiation of a constructor
template with an explicit template argument list
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: richard-gccbugzilla at metafoo dot co.uk
Target Milestone: ---
Example:
struct A {
template<typename T> A() {}
};
template A::A<int>();
GCC accepts this without even a warning under -std=c++20 -pedantic-errors, but
this is not valid C++.
If this is an intentional extension, it doesn't appear to be documented (and
presumably should be rejected under -pedantic-errors).
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