https://issues.dlang.org/show_bug.cgi?id=23690

          Issue ID: 23690
           Summary: compilable/cimports2.i:1:1: error: unknown type name
                    '__import'
           Product: D
           Version: D2
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: major
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: ibuclaw@gdcproject.org

When compiling the test with `gcc -std=c11 -fsyntax-only`

compilable/cimports2.i:1:1: error: unknown type name ‘__import’
    1 | __import imports.cimports2a;
      | ^~~~~~~~
compilable/cimports2.i:1:17: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or
‘__attribute__’ before ‘.’ token
    1 | __import imports.cimports2a;
      |                 ^
compilable/cimports2.i:2:1: error: unknown type name ‘__import’
    2 | __import imports.cimports2b;
      | ^~~~~~~~
compilable/cimports2.i:2:17: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or
‘__attribute__’ before ‘.’ token
    2 | __import imports.cimports2b;
      |                 ^
compilable/cimports2.i:4:11: error: ‘xx’ undeclared here (not in a function)
    4 | int *p = &xx;
      |           ^~

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