http://d.puremagic.com/issues/show_bug.cgi?id=4638
Summary: Regression: new writeln does not recognize "wstring
toString"
Product: D
Version: D2
Platform: Other
OS/Version: Windows
Status: NEW
Severity: normal
Priority: P2
Component: Phobos
AssignedTo: [email protected]
ReportedBy: [email protected]
--- Comment #0 from Lionello Lunesu <[email protected]> 2010-08-12
20:38:35 PDT ---
In 2.047, a struct could provide a toString that returned a wstring (as opposed
to string) and it would get used when passing the struct to writeln.
As of 2.048 a toString returning wstring is not detected and the struct's
typename is returned instead. toString returning string works fine.
Repro:
import std.stdio;
import std.conv;
struct A
{
wstring toString() { return "blah"; }
}
void main()
{
A a;
writeln(a);
writeln(to!string(a));
writeln(to!wstring(a));
}
DMD 2.047:
blah
blah
blah
DMD 2.048:
A
blah
blah
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