https://issues.dlang.org/show_bug.cgi?id=24419

          Issue ID: 24419
           Summary: ImportC: Macros inside a typedef enum not seen
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: atila.neves@gmail.com

------
// quux.c
typedef enum {
    #define R0 _RAX
    _RAX,
} reg;

// mod.d
import quux;
const _ = _RAX; // fine
const r0 = R0;  // oops
------

source/mod.d(3): Error: undefined identifier `R0`, did you mean variable `r0`?

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