https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89712
Bug ID: 89712 Summary: Documentation for GCC => 8.0 contains unsupported options Product: gcc Version: 8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: other Assignee: unassigned at gcc dot gnu.org Reporter: 7aitsev at pm dot me Target Milestone: --- Since GCC version 8.0 at least these two options were replaced: -fdump-class-hierarchy ---> -fdump-lang-class -fdump-translation-unit ---> -fdump-lang-raw When I tried to use -fdump-class-hierarchy on GCC 8.2.1 and 8.3, I got the following error: $ g++ -fdump-class-hierarchy source.cpp cc1plus: error: unrecognized command line option ‘-fdump-class-hierarchy’ In the docs for 8.3 both class-hierarchy and translation-unit are still there. There is no way to figure out from documentation which options are replacements for these options.