4822 – Problem with std.stdio.File.writef("%c"

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Issue 4822 - Problem with std.stdio.File.writef("%c"

Summary: Problem with std.stdio.File.writef("%c"

Status:	RESOLVED FIXED

Alias:	None

Product:	D
Classification:	Unclassified
Component:	phobos (show other issues)
Version:	D2
Hardware:	x86 Windows

Importance:	P2 normal
Assignee:	No Owner

URL:
Keywords:	rejects-valid

Depends on:
Blocks:

Reported:	2010-09-05 11:19 UTC by bearophile_hugs
Modified:	2012-04-22 17:48 UTC (History)
CC List:	2 users (show)

See Also:

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Description bearophile_hugs 2010-09-05 11:19:51 UTC

I think this is a correct D2 program:


import std.stdio: File;
void main() {
    auto f = File("test.txt", "w");
    f.writef("%c", 'x');
}


But DMD dmd 2.048 gives at runtime:
std.format.FormatError: std.format integral

Comment 1 Lars T. Kyllingstad 2011-02-03 00:50:11 UTC

According to the std.format documentation, "%c" is not a valid format specifier.  The error message could be improved, though.

Comment 2 SomeDude 2012-04-21 15:37:32 UTC

The program runs fine on 2.059, and the text file is created with 'x' inside.

Comment 3 Kenji Hara 2012-04-22 17:48:15 UTC

"%c" format specifier has been supported from 2.058:
http://dlang.org/phobos/std_format

It was fixed by the pull request:
https://github.com/D-Programming-Language/phobos/pull/298