[Bug c++/71147] [6 Regression] Flexible array member wrongly rejected in template

[msebor at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71147

--- Comment #9 from Martin Sebor <msebor at gcc dot gnu.org> ---
The test case from comment 4 on bug 70932 fails due to this bug.  But looking
at the error in comment 3 more closely I see "unbekannte Feldgröße in »delete«"
which with some help from Google Translate does look like the same error as in
bug 70932.  Sorry for the confusion!