https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87012
Bug ID: 87012
Summary: [Regression] ICE in verify_unstripped_args_1
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: v.reshetnikov at gmail dot com
Target Milestone: ---
/***************** BEGIN SOURCE *****************/
template<class T>
using ref = T&;
int x;
template<template<class> class T, T<int>>
struct X { };
struct Y : X<ref, x> { };
/****************** END SOURCE ******************/
<source>: In instantiation of 'struct X<ref, x>':
<source>:9:12: required from here
<source>:7:10: internal compiler error: in verify_unstripped_args_1, at
cp/pt.c:1155
7 | struct X { };
| ^
Compiler returned: 1
Compiles fine with GCC 8.2 and Clang.
