"error : expected an integer constant" for Enum

[Ian_Mallett1]

This C++ code (Windows) will erroneously produce this error:

enum { ALIGN=16 }; __declspec(align(ALIGN)) float arr[4];

Enums are constexprs, so "ALIGN" is definitely a constant.

[Ian_Mallett1]

After some playing, it seems that this code works:

enum { ALIGN=16 }; __declspec(align((int)ALIGN)) float arr[4];

According to the standard: "values of unscoped enumeration type are implicitly-convertible to integral types" (i.e., that cast shouldn't be necessary). So this seems to be the underlying issue.

[Kittur_G_Intel]

Yes, I tried the above case as well and what you mention is correct. Thanks for the confirmation.

_Kittur 

[Ian_Mallett1]

This is still broken in 16 update 2. Also broken for `alignas(...)`.

[Kittur_G_Intel]

That's correct Ian, it's broken in update 2. I'll check and see if this is fixed in the main branch or will be in the upcoming update when it's scheduled. Anyways, I'll go ahead and file an issue on this with the developers. Appreciate your patience through this and will keep you updated accordingly.

Regards,
Kittur

[Kittur_G_Intel]

Ian, I've filed issue (DPD200410436) and will keep you updated, thx.

Kittur