Programme crashes while deallocating a character array

Question

When I run the .exe being created with the below code in debug mode , it shows some assertion failure and the programme crashes But when i run the same exe created from the rele

Answer 1

When you do this:

buf = "Hello";

You're basically changing the pointer value (memory address) at which buf points to a read-only memory area, because "Hello" is a string literal and therefore is stored in read-only memory.

Then you attempt to free that memory, hence the crash.

Also, "Hello" is 6-bytes long, not 5.