http://d.puremagic.com/issues/show_bug.cgi?id=7857
Summary: File#write formats enum as a boolean.
Product: D
Version: D2
Platform: All
OS/Version: All
Status: NEW
Severity: regression
Priority: P2
Component: Phobos
AssignedTo: [email protected]
ReportedBy: [email protected]
--- Comment #0 from Masahiro Nakagawa <[email protected]> 2012-04-08
07:14:50 PDT ---
Test code is below:
-----
enum EI : int
{
A, B
}
enum ED : double
{
A, B
}
writeln(EI.A); // false, but A on 2.058
writeln(EI.B); // true, but B on 2.058
writeln(ED.A); // A
writeln(ED.B); // B
-----
The reason of this bug is isBoolean template returns true.
(BooleanTypeOf template returns "immutable(bool)").
std.stdio.File#write's code:
-----
void write(S...)(S args)
{
auto w = lockingTextWriter;
foreach (arg; args)
{
alias typeof(arg) A;
static if (isSomeString!A)
{
put(w, arg);
}
else static if (isIntegral!A)
{
toTextRange(arg, w);
}
else static if (isBoolean!A) // Oops! enum into this block.
{
put(w, arg ? "true" : "false");
}
else static if (isSomeChar!A)
{
put(w, arg);
}
else
{
// Most general case
std.format.formattedWrite(w, "%s", arg);
}
}
}
-----
This bug is major issue for me.
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