OK. Same line for me (line 361 as told in my 1st post).
There were a lot of modifications in wxAnimation, introduced with the last git branch merge (07/04/2020). It's not only the very last modification concerning ctor, dtor ... which introduced this behaviour.
The -fpermissive flag is effectively suggested by the error code, but as wxledpanel is in a pack of plugins compiled together, I suppose that you put it at a relatively high level. So this flag affects also other plugins I suppose. Could it be a future source of problems ?
gd_on