Simple pointer return goes wrong

[vivienneanthony]

Hello,

I'm trying to do a simple pointer return but the program keeps crashing. It's a simple solution but I looked at code today so I'm a little blah.

The transfer fuction is

unsigned char *  Terrain::GetData()
{
    return (unsigned char *)proceduralImageCreated -> GetData();
}

GetData() is based on this

http://urho3d.github.io/documentation/1.32/class_urho3_d_1_1_image.html#a4493750ec073340f56269e34b2e9aca9

unsigned char * 	GetData () const
 	Return pixel data. 

I'm using the following lines

   Image * producedHeightMapImage = new Image(context_);
    producedHeightMapImage -> SetSize(1024,1024, 1, 4);
    producedHeightMapImage -> SetData(terrain -> GetData());

The Image that creates proceduralImageCreated is correct.

So I'm a little lost.

Vivienne

[NoXzema]

What's the signal caught? Segfault?
Also, is that the exact line causing the crash?

[kbw]

I'm trying to do a simple pointer return but the program keeps crashing.

There are a number of things that could cause that crash. The first one is always, is the pointer null or uninitialised?

If you want to track the actual crash, it's normal to run the program in a debugger and let it crash. The debugger will show the function it crashed in, and the call stack. If the program was built for debug, you'll also be able to see local variables for each function in your program that's in the call stack.

Once you can see where it's crashing, you can work backwards to work out why.