https://gcc.gnu.org/bugzilla/show_bug.cgi?id=24639 Bug 24639 depends on bug 53480, which changed state.
Bug 53480 Summary: warning "may be used uninitialized" issued with -m32 but not with -m64 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53480 What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |WORKSFORME
