[Bug c++/119194] [14/15 Regression] GCC 14.2.0: Incorrect Handling of reference to a local constexpr as a Template Argument

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119194

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
            Summary|GCC 14.2.0: Incorrect       |[14/15 Regression] GCC
                   |Handling of const           |14.2.0: Incorrect Handling
                   |std::string_view& as a      |of reference to a local
                   |Template Argument           |constexpr as a Template
                   |                            |Argument
   Last reconfirmed|                            |2025-03-10
             Status|UNCONFIRMED                 |NEW
   Target Milestone|---                         |14.3

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Confirmed.

Reduced testcase:
```
template <const int& Str>
[[gnu::noipa]]
int get_length() {
    return Str;
}
static constexpr int sssss{ 3};
int main() {
   if (get_length<sssss>() != sssss)
     __builtin_abort();
    return 0;
}
```

the constexpr here is important.