Bug#327021: libqt3-mt: QString::arg(double) produces sometimes garbage

[Wolfgang Roemer <wolfgang.roemer@gmx.net>]

Package: libqt3-mt
Version: 3:3.3.4-7
Severity: important

A simple conversion of a double value into a QString with the standard
QString::arg(...) function fails sometimes:

--------------- code to reproduce bug ------------
#include <qstring.h>
#include <qregexp.h>

#include <stdio.h>


int main (int argc, char* argv[])
{
	double myValue = 13.0;

	QString convertedFloat  = QString ("%1\n").arg ((double) myValue, 0, 'g', 7);
	printf ("Converted value: %s\n", convertedFloat.latin1 ());

	QRegExp unallowedChars ("[a-zA-Z,;'<>?:\"!@#$%^&*()-_+]");
	if (convertedFloat.contains (unallowedChars) > 0)
	{
		printf ("BUG: The conversion of a double failed.\n");
		return 1;
	}

	return 0;
}
--------------- end of code to reproduce bug ------------

Because there are no differences between the debian version of
qstring.cpp and qlocale.cpp and the corresponding qt versions and
because I got no problems when compiling the same version with a g++
of 3.3 or earlier I would not be surprised if it turns out to be a
compiler bug of the gcc-3.4 and higher.


-- System Information:
Debian Release: testing/unstable
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.11-1-686-smp
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)

Versions of packages libqt3-mt depends on:
ii  fontconfig                2.3.2-1        generic font configuration library
ii  libaudio2                 1.7-3          The Network Audio System (NAS). (s
ii  libc6                     2.3.5-6        GNU C Library: Shared libraries an
ii  libfontconfig1            2.3.2-1        generic font configuration library
ii  libfreetype6              2.1.10-1       FreeType 2 font engine, shared lib
ii  libgcc1                   1:4.0.1-6      GCC support library
ii  libice6                   6.8.2.dfsg.1-6 Inter-Client Exchange library
ii  libjpeg62                 6b-10          The Independent JPEG Group's JPEG 
ii  libmng1                   1.0.8-1        Multiple-image Network Graphics li
ii  libpng12-0                1.2.8rel-1     PNG library - runtime
ii  libsm6                    6.8.2.dfsg.1-6 X Window System Session Management
ii  libstdc++6                4.0.1-6        The GNU Standard C++ Library v3
ii  libx11-6                  6.8.2.dfsg.1-6 X Window System protocol client li
ii  libxcursor1               1.1.3-1        X cursor management library
ii  libxext6                  6.8.2.dfsg.1-6 X Window System miscellaneous exte
ii  libxft2                   2.1.7-1        FreeType-based font drawing librar
ii  libxinerama1              6.8.2.dfsg.1-6 X Window System multi-head display
ii  libxrandr2                6.8.2.dfsg.1-6 X Window System Resize, Rotate and
ii  libxrender1               1:0.9.0-2      X Rendering Extension client libra
ii  libxt6                    6.8.2.dfsg.1-6 X Toolkit Intrinsics
ii  xlibs                     6.8.2.dfsg.1-6 X Window System client libraries m
ii  zlib1g                    1:1.2.3-4      compression library - runtime

libqt3-mt recommends no packages.

-- no debconf information