[Issue 4967] New: { } struct literals not documented, and not working

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=4967

           Summary: { } struct literals not documented, and not working
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Severity: major
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: ah08010-d at yahoo.com


--- Comment #0 from Austin Hastings <ah08010-d at yahoo.com> 2010-10-01 06:24:48 PDT ---
I unthinkingly created a struct literal like S s = { 9 }; and it worked (which,
now that I'm complaining about it, I can't find documented in the chm). 

But this format doesn't appear to initialize any other fields:
$ cat test.d
import std.stdio;

struct S {
    int key;

    int x = 1;

    void dump() {
        writefln("%s %s", key, x);
    }
}

void main() {
    S s1;
    s1.dump;

    S s2 = { 9 };
    s2.dump;
}
This code prints:
$ dmd -run test.d
0 1
9 1310436

Note the trash in the second variable. I am not sure what the correct solution
is - should struct literals require ctor style, or use static-initializer
format and an implicit copy? - but I would certainly have appreciated a
warning, if nothing else, when I started compiling code like this.

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