[Bug c++/115844] [14 Regression] Invalid diagnostics for correctly-rejected non-consteval call in consteval function called in a regular lambda

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115844

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://gcc.gnu.org/bugzill
                   |                            |a/show_bug.cgi?id=107687
         Resolution|---                         |INVALID
             Status|UNCONFIRMED                 |RESOLVED

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
clang gives the same error message:

```
<source>:16:5: error: call to immediate function 'main()::(anonymous
class)::operator()' is not a constant expression
   16 |     l();
      |     ^
<source>:12:9: note: read of non-constexpr variable 'l' is not allowed in a
constant expression
   12 |         x += 1;
      |         ^
<source>:16:5: note: in call to 'l.operator()()'
   16 |     l();
      |     ^~~
<source>:11:10: note: declared here
   11 |     auto l = [&x] {
      |          ^
```




See https://wg21.link/p2564 (PR 107687) and
https://gcc.gnu.org/onlinedocs/gcc-14.1.0/gcc/C_002b_002b-Dialect-Options.html#index-fno-immediate-escalation
.