https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117689
Bug ID: 117689
Summary: enum with underying type "extension" to GNU 17 is not
documented
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Keywords: documentation
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: pinskia at gcc dot gnu.org
Target Milestone: ---
In GNU90/99/11/17 modes, GCC allows underlying types for enum to be specified.
This is not documented as an extension to these modes (it is part of C23
though).
Also in connection to this we could expand "Incomplete enum Types" section to
talk about if you supply an underlying type for the enum tag forward
declaration, you can use it as a normal type too.
