http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47823
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> 2011-02-20 20:40:03 UTC --- At one point it was documented in the C preprocessor manual but it is no longer documented there.
- [Bug preprocessor/47823] New: #pragma once not... olafvdspek at gmail dot com
- [Bug preprocessor/47823] #pragma once not... pinskia at gcc dot gnu.org
