https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113924
Bug ID: 113924
Summary: worse diagnostic for invalid decltype since r10-5347
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: mpolacek at gcc dot gnu.org
Target Milestone: ---
int m () = delete;
void
f (int i, int = decltype (m()){ })
{
}
void
f2 (int i, int = decltype(x){ })
{
}
used to say
/home/mpolacek/w.C:4:29: error: use of deleted function ‘int m()’
4 | f (int i, int = decltype (m()){ })
| ^
/home/mpolacek/w.C:1:5: note: declared here
1 | int m () = delete;
| ^
/home/mpolacek/w.C:4:29: error: use of deleted function ‘int m()’
4 | f (int i, int = decltype (m()){ })
| ^
/home/mpolacek/w.C:1:5: note: declared here
1 | int m () = delete;
| ^
/home/mpolacek/w.C:9:27: error: ‘x’ was not declared in this scope
9 | f2 (int i, int = decltype(x){ })
| ^
/home/mpolacek/w.C:9:27: error: ‘x’ was not declared in this scope
which still duplicated the errors, but now we say:
/home/mpolacek/w.C:4:29: error: use of deleted function ‘int m()’
4 | f (int i, int = decltype (m()){ })
| ^
/home/mpolacek/w.C:1:5: note: declared here
1 | int m () = delete;
| ^
/home/mpolacek/w.C:4:29: error: use of deleted function ‘int m()’
4 | f (int i, int = decltype (m()){ })
| ^
/home/mpolacek/w.C:1:5: note: declared here
1 | int m () = delete;
| ^
/home/mpolacek/w.C:4:17: error: expected primary-expression before ‘decltype’
4 | f (int i, int = decltype (m()){ })
| ^~~~~~~~~~~~~
/home/mpolacek/w.C:4:17: error: expected ‘,’ or ‘...’ before ‘decltype’
/home/mpolacek/w.C:4:34: error: expected unqualified-id before ‘)’ token
4 | f (int i, int = decltype (m()){ })
| ^
/home/mpolacek/w.C:9:27: error: ‘x’ was not declared in this scope
9 | f2 (int i, int = decltype(x){ })
| ^
/home/mpolacek/w.C:9:27: error: ‘x’ was not declared in this scope
/home/mpolacek/w.C:9:18: error: expected primary-expression before ‘decltype’
9 | f2 (int i, int = decltype(x){ })
| ^~~~~~~~~~
/home/mpolacek/w.C:9:18: error: expected ‘,’ or ‘...’ before ‘decltype’
/home/mpolacek/w.C:9:32: error: expected unqualified-id before ‘)’ token
9 | f2 (int i, int = decltype(x){ })
| ^
and that's even worse.
