[Issue 874] Bad codegen: wrong value variable in tuple foreach, D1 only

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=874


Don <clugdbug at yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Incorrect codegen with      |Bad codegen: wrong value
                   |tuples, string constants,   |variable in tuple foreach,
                   |and AAs, D1 only            |D1 only


--- Comment #3 from Don <clugdbug at yahoo.com.au> 2009-10-30 01:53:50 PDT ---
Original title was: "Incorrect codegen with tuples, string constants, and AAs".

This bug has nothing to do with AAs, actually. The problem is that the 'value'
in a tuple foreach isn't dealt with correctly. 
Workarounds: Change the code into:  ret = arg.dup; or ret = args[0];

char[] bug874(T...)(T args)
{
    char[] ret;

    foreach(arg; args) {
        ret = arg;
    }

    assert(ret=="b"); // passes
    return ret;
}

void main()
{
    char[] s = bug874("b");
    assert(s == "b"); // fails
}

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