bugs about FTBFS with g++15 (experimental)

[Benoît Rouits <brouits@free.fr>]

Dear mentors,

Two of my packages in Debian have been filled a FTBFS bug with g++15 
from experimental, two months ago. I cannot reproduce the bugs since, 
probably, g++15 have evolved now. I am tempted to close the bugs on my 
packages, bug the FTBFS bugs say:

Please keep this issue open in the bug tracker for the package it
was filed for.  If a fix in another package is required, please
file a bug for the other package (or clone), and add a block in this
package. Please keep the issue open until the package can be built in
a follow-up test rebuild.

I am asking guidance on what should be done, then. The bugs are #1097684 
(qabc) and #1097710 (qspeakers).

Thank you for your advice,

 Benoît