Program crashes

[Fallen_]

Hi, when calling this:

std::string final = tmp.substr(tmp.find(" "), tmp.length());
		m_chan = new Channel(this, QString(final.c_str()), socket);
		tabs->addTab(m_chan, QString(final.c_str()));

std::string final = tmp.substr(tmp.find(" "), tmp.length());
		m_chan = new Channel(this, QString(final.c_str()), socket);
		tabs->addTab(m_chan, QString(final.c_str()));

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the program crahes without a reason. im sure the tmp has a " "
PS:
when i debug i get seg fault

[tbscope]

Possible problems:

tabs = 0
m_chan = 0
if socket is a pointer, it can be 0 too.

So, do a check on all pointers, or check your backtrace to find which pointer is 0

[Fallen_]

already did, nothing wrong

[tbscope]

Post your backtrace.

[Fallen_]

Did you mean this?:
Signal name: SIGSEGV
Signal meaning: Segmentation fault
if not:
http://pastebin.com/R5uubZPf
---The text that you have entered is too long (46227 characters). Please shorten it to 10000 characters long.
anything else?

[tbscope]

No, that is the compiled code of a QWidget::setParent function.

But it might get us closer to the error.
If your program fails in this function, you're creating a widget with a non valid parent.

I guess Channel is a widget?
And the first argument in the constructor is the parent?
Does "this" exist?

[Fallen_]

Channel is a widget yes, and "this" exist while calling it and yes the first arguemnt is QWidget

[tbscope]

I would love to see the backtrace.

What system are you using? Window, Linux, MacOs, ... ?
What IDE are you using? Qt Creator, ... ?

[Fallen_]

Windows, Qt creator (to debug), and Qt Command Line to compile. how do i get the backtrace?

[tbscope]

In Qt Creator, in stead of running the program normally, run the program in the debugger.
When it crashes, go to the stack view (should be the list on the left I think), it should contain the backtrace.

[Fallen_]

nope, cant see anything