https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103572
Bug ID: 103572
Summary: [11/12 Regression] ICE in build_function_type after
undefined type as a template argument during class
template argument deduction
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Keywords: error-recovery, ice-on-invalid-code
Severity: trivial
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: pinskia at gcc dot gnu.org
Target Milestone: ---
Reduced testcase:
template <view_concept urng_t>
class view
{
view(view const & rhs) = default;
};
view v1(0);
---- CUT ----
GCC 10 did not ICE:
<source>:1:11: error: 'view_concept' has not been declared
1 | template <view_concept urng_t>
| ^~~~~~~~~~~~
<source>:6:10: error: class template argument deduction failed:
6 | view v1(0);
| ^
<source>:6:10: error: no matching function for call to 'view(int)'
<source>:4:3: note: candidate: 'template<<declaration error> > view(const
view<<declaration error> >&)-> view<<declaration error> >'
4 | view(view const & rhs) = default;
| ^~~~
<source>:4:3: note: template argument deduction/substitution failed:
<source>:2:7: note: candidate: 'template<<declaration error> >
view(view<<declaration error> >)-> view<<declaration error> >'
2 | class view
| ^~~~
<source>:2:7: note: template argument deduction/substitution failed:
