http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59658
Bug ID: 59658 Summary: Document -f* flags enabled by -Og Product: gcc Version: 4.9.0 Status: UNCONFIRMED Keywords: documentation Severity: normal Priority: P3 Component: middle-end Assignee: unassigned at gcc dot gnu.org Reporter: burnus at gcc dot gnu.org http://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html#index-O-775 documents the -f* flags enabled by -O*. And the -f* options document their respective -O* options which enables them. However, for -Og this is not documented. The information can be obtained using: gcc -Q --help=optimizers -Og|grep enabled It might be useful to have this information in the man page for -Og as well.