https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96500
Bug ID: 96500
Summary: enum of underlying type bool do not
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: fw at gcc dot gnu.org
Target Milestone: ---
I believe this needs to be accepted:
enum E : bool { One, Two, Three };
See <http://eel.is/c++draft/dcl.enum#5>, “If the underlying type is fixed, the
type of each enumerator prior to the closing brace is the underlying type and
the constant-expression in the enumerator-definition shall be a converted
constant expression of the underlying type.”.
Converted constant expressions include integral conversions. Conversion from
int to bool is not a narrowing conversion. So Three should have the value
true, just like Two.
