[Issue 7835] switch case fallthrough error despite a break inside static foreach

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=7835



--- Comment #5 from bearophile_hugs at eml.cc 2012-04-06 11:32:39 PDT ---
This compiles with no warnings and it seems to work correctly, but I don't
fully understand it:


import core.stdc.stdio: printf;
template TypeTuple(TList...) {
    alias TList TypeTuple;
}
void main() {
    char c = 'b';
    MySwitch: switch (c) {
        case 'a': printf("1 a\n"); break;
        foreach (o; TypeTuple!('b', 'c')) {
            case o: printf("2 %c\n", c); break;
        }
        break;
        default: printf("default");
    }
}


Is it correct? if the break inside here is meant to be the foreach break:
{ case o: printf("2 %c\n", c); break; }

Then why a single break is enough after:

        foreach (o; TypeTuple!('b', 'c')) {
            case o: printf("2 %c\n", c); break;
        }
        break;

despite the foreach synthesizes more than one switch case?

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