[Issue 10753] New: std.array.array of a range of structs with immutable fields too

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=10753

           Summary: std.array.array of a range of structs with immutable
                    fields too
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Windows
            Status: NEW
          Keywords: rejects-valid
          Severity: normal
          Priority: P2
         Component: Phobos
        AssignedTo: nobody at puremagic.com
        ReportedBy: bearophile_hugs at eml.cc


--- Comment #0 from bearophile_hugs at eml.cc 2013-08-03 07:02:11 PDT ---
import std.algorithm: map;
import std.array: array;
struct Foo {
    immutable dchar d;
}
struct Bar {
    immutable int x;
}
void main() {
    "12".map!Foo.array;
    [1, 2].map!Bar.array;
}



DMD 2.064alpha gives:

...\dmd2\src\phobos\std\array.d(2309): Error: cannot modify struct delegate
Foo[]()

{

return (cast(Foo*)(*this._data).arr)[len..len + 1u];

}

()[0u] Foo with immutable members
...\dmd2\src\phobos\std\array.d(69): Error: template instance
std.array.Appender!(Foo[]).Appender.put!(Foo) error instantiating
temp.d(10):        instantiated from here: array!(MapResult!(Foo, string))
temp.d(10): Error: template instance std.array.array!(MapResult!(Foo, string))
error instantiating
...\dmd2\src\phobos\std\array.d(58): Error: cannot modify struct result[i] Bar
with immutable members
temp.d(11): Error: template instance std.array.array!(MapResult!(Bar, int[]))
error instantiating

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