https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19987 Bug 19987 depends on bug 15826, which changed state.
Bug 15826 Summary: don't use "if" to extract a single bit bit-field. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=15826 What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution|--- |FIXED