Thread: Error when realloc in C

Originally Posted by thachdovan

In this case, how I can free the pointer.
Thank you so much!

You can only free what you allocated with malloc. In the above code 'p_array' looks like a global variable or something which means you don't have to free it.

Originally Posted by thachdovan

Finally, It worked, but I have a question. Should I use DMA in runtime application and in a small memory device?
Thank you so much!

What do you mean by DMA ? I take this to mean Direct Memory Access which is irrelevant here.

Originally Posted by Aslaville

What do you mean by DMA ? I take this to mean Direct Memory Access which is irrelevant here.

Of course, Dynamic memory allocation, Thank you.

Originally Posted by Aslaville

You can only free what you allocated with malloc. In the above code 'p_array' looks like a global variable or something which means you don't have to free it.

In above code, I init p_array with malloc, so I need to free it. why in this case, I dont have to free it. Please share in more detail. Thank you.