QDir::mkpath and QImage::save on msvc2010 Release Build

LifeSoldier

I am using Qdir mkpath(dir) and QImage::save to save .png images. But on release mode the program doesnt create some folders nor save images even though it does on debug. But it creates some of folders I wanted to create.

And my code is here:

@ bool check_dir(QString qsDir)
{
assert(!qsDir.isEmpty());
QDir dir(qsDir);
return dir.exists();
}

bool create_dir(QString qsDir)
{
QFileInfo fi(qsDir);

/* absolute path is necessary since mkpath works weird otherwise (2 dirs are created instead of one) */
if (fi.isRelative())
  qsDir = fi.absoluteFilePath();

if (check_dir(qsDir))
  return true;

QDir dir(qsDir);

return dir.mkpath(qsDir);

}@
create_dir always return true.

I am using Qt 4.8.2 for release qmain.lib, QtCore4.lib, QtGui4.lib and with qmaind.lib, QtCored4.lib, QtGuid4.lib on debug

Could you please help me to fix this ?

Sam

Hi,

Welcome to devnet,

Kindly use "code wrapping":http://qt-project.org/wiki/ForumHelp#e3f82045ad0f480d3fb9e0ac2d58fb01 for your code, so that it is easily readable. Use @-tags for your code while posting.

LifeSoldier

I have found out what was wrong. If you are using assert you should drop NDEBUG from Release - Preprocessor options =)

lgeyer

Be aware that this is true for other debug instructions as well, like Q_ASSERT, Q_ASSERT_X and Q_CHECK_PTR, as they are removed in release builds (or more specifically when QT_NO_DEBUG is defined).

Be sure to never place instructions within such macros that could cause any side-effects.
@
// WRONG, removed in release build, uninitialized ptr
Q_CHECK_PTR(ptr = new char[size]);

// RIGHT
ptr = new char[size];
Q_CHECK_PTR(ptr);
@