https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96872
Bug ID: 96872
Summary: [11 Regression] ICE: Segmentation fault
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gcc-bugs at marehr dot dialup.fu-berlin.de
Target Milestone: ---
Hi gcc-team,
the following code ices
```
template <typename> struct concat_view {
struct {
template <typename> using constify_if = int;
using concat_view_t = constify_if<concat_view>;
};
};
```
https://godbolt.org/z/db3qq6
with
> g++-git -std=c++2a
and outputs
```
ice.cpp: In substitution of ‘template<class> template<class> using constify_if
= int [with <template-parameter-2-1> = concat_view< <template-parameter-1-1> >;
<template-parameter-1-1> = <template-parameter-1-1>]’:
ice.cpp:4:50: required from here
ice.cpp:4:50: internal compiler error: Segmentation fault
4 | using concat_view_t = constify_if<concat_view>;
| ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://bugs.archlinux.org/> for instructions.
```
