Bug 23511 – Incrementing a not supported type in enum

As expected, DMD does not compile this: enum { string A = "12", B, } But AFAIK nothing in the specification implies that this is not compilable. I can devise other possible interpretations of the specification than being not compilable, for example, undefined behavior. Need to say in the specification that stuff like this does not compile.

> As expected, DMD does not compile this Yes, though I've tweaked the error message in my local copy as it should be clearer. (I'll submit it soon). > nothing in the specification implies that this is not compilable "If there is no AssignExpression and it is not the first EnumMember, it is given the value of the previous EnumMember+1. If the value of the previous EnumMember is EnumBaseType.max, it is an error." https://dlang.org/spec/enum.html#named_enums 'the value of the previous EnumMember+1' implies that expression must compile.

> 'the value of the previous EnumMember+1' implies that expression must compile. Actually I have made a pull to clarify the spec which adds some more details.

dlang/dlang.org pull request #3462 "Fix Issue 23511 - Incrementing a not supported type in enum" was merged into master: - 8dd0fb161917abf92b163afdff3e2c319ff181dc by Nick Treleaven: Fix Issue 23511 - Incrementing a not supported type in enum Also remove noisy unnecessary AssignExpression links. https://github.com/dlang/dlang.org/pull/3462