gcc-16 bugs

Almost exactly a year passed since my previous pile report . gcc-16 was branched off from master and will receive only regression fixes. master is called gcc-17 now. Instead of posting incremental updates at arbitrary tine I’ll try yearly ones. That should cover all the bugs I saw in a release cycle in a single post. Summary During gcc-16 cycle I found 31 bug: libstdc++/119970 : mingw32 libstdc++…