https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103524 Bug 103524 depends on bug 116671, which changed state.
Bug 116671 Summary: Compiling iostream and string as modules fails if string is compiled first https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116671 What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |FIXED
