https://issues.dlang.org/show_bug.cgi?id=12859
--- Comment #5 from bearophile_h...@eml.cc --- When I compile druntime I still see some errors: src\core\stdc\stdio.d(683): Deprecation: Read-modify-write operations are not allowed for shared variables. Use core.atomic.atomicOp!"&="((*stream)._flag, ~_IOERR) instead. src\core\stdc\stdio.d(684): Deprecation: Read-modify-write operations are not allowed for shared variables. Use core.atomic.atomicOp!"&="((*stream)._flag, ~(_IOERR | _IOEOF)) instead. dmd -c -oflib\gcstub.obj src\gcstub\gc.d -m32 -O -release -inline -w -Isrc -Iimport src\core\stdc\stdio.d(683): Deprecation: Read-modify-write operations are not allowed for shared variables. Use core.atomic.atomicOp!"&="((*stream)._flag, ~_IOERR) instead. src\core\stdc\stdio.d(684): Deprecation: Read-modify-write operations are not allowed for shared variables. Use core.atomic.atomicOp!"&="((*stream)._flag, ~(_IOERR | _IOEOF)) instead. Do I have to reopen this issue? --