#pragma STDC CX_LIMITED_RANGE off is currently unimplemented, and generates the warning:
warning: ignoring #pragma STDC CX_LIMITED_RANGE -- Summary: Pragma STDC CX_LIMITED_RANGE unimplemented Product: gcc Version: 4.1.0 Status: UNCONFIRMED Severity: enhancement Priority: P2 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: aaronavay62 at aaronwl dot com CC: gcc-bugs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20785