https://gcc.gnu.org/bugzilla/show_bug.cgi?id=29842 Bug 29842 depends on bug 27394, which changed state.
Bug 27394 Summary: double -> char conversion varies with optimization level https://gcc.gnu.org/bugzilla/show_bug.cgi?id=27394 What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID