[Issue 5969] New: Poor error message for foreach over type tuple

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=5969

           Summary: Poor error message for foreach over type tuple
           Product: D
           Version: D1 & D2
          Platform: Other
        OS/Version: Windows
            Status: NEW
          Severity: normal
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: clugdbug at yahoo.com.au


--- Comment #0 from Don <clugdbug at yahoo.com.au> 2011-05-09 08:19:38 PDT ---
This code fails with a back-end error:
test.d(7): Error: type Foo is not an expression

struct Foo {
    int a;
}
int foo()
{
    foreach (f; Foo.tupleof)
    {}
    return 1;
}
//static assert(foo());
It should be a front-end error. If you uncomment the static assert, you get a
cryptic "cannot interpret Foo at compile time" error.
But the error should have been detected before CTFE was initiated.

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