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malloc / new issue
Match0um last edited by
Sorry for that, but as I am not a expert in programming, I am stucked here. :(
I wanted to take avantage of new/delete instead of malloc/free.
In an existing program, I had:
bufferSize = (int*)malloc(sizeof(int));
and I changed for:
int *bufferSize = new int();
Compilation is OK but programm crashes when I try to access bufferSize. Can someone kindly tell me if something is wrong in my new line ? :(
Thanks for your help / explanation
First - where is the relation to Qt here?
Second - why do you want to create a single integer on the heap at all?
Third - you code does not show anything, especially not the place where it's crashing. Provide a minimal, compilable example so we can see what you're doing (wrong).
mchinand last edited by mchinand
Also, in your first (old) line of code, you don't declare the type of
bufferSize; is it a class member variable? In your second (new) line of code, you do declare the type, making it a local shadow variable (which should generate a compiler warning and/or c-tidy warning). If you try to reference
bufferSizein another method, it would try to access the uninitialized member variable.
nagesh last edited by
@Match0um where is this declared?
if declared as member variable during initialization use like this..
bufferSize = new int(); //don't use int