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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/99505] ICE Segmentation fault when decltype lambda in
 parameter list
Date: Sat, 13 Apr 2024 07:41:01 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99505

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to =E5=BA=B7=E6=A1=93=E7=91=8B from comment #2)
> int main() {
>   [] (decltype([]{})) {} ();
> }

This testcase still ICEs.

Note clang, EDG and MSVC all reject it with a similar message here is clang=
's:
```
<source>:3:3: error: no matching function for call to object of type '(lamb=
da
at <source>:3:3)'
    3 |   [] (decltype([]{})) {} ();
      |   ^~~~~~~~~~~~~~~~~~~~~~
<source>:3:3: note: candidate function not viable: requires 1 argument, but=
 0
were provided
    3 |   [] (decltype([]{})) {} ();
      |   ^   ~~~~~~~~~~~~~~
<source>:3:3: note: conversion candidate of type 'void (*)(decltype([] {
}))' (aka 'void (*)((lambda at <source>:3:16))')

```=