Valgrind showing memory leak for printf and unused blocks

Question

#include 
#include 
#include 

int main(int argc, char *argv[]){
  char *str = malloc(sizeof(char)*5);
  str = strcpy(         


        

Answer 1

It isn't telling you that there is a leak:

==77215== LEAK SUMMARY:
==77215==    definitely lost: 0 bytes in 0 blocks
==77215==    indirectly lost: 0 bytes in 0 blocks
==77215==      possibly lost: 0 bytes in 0 blocks
==77215==    still reachable: 4,096 bytes in 1 blocks
==77215==         suppressed: 25,115 bytes in 373 blocks

it's telling you that there is a block which is still reachable; whether or not there is a leak is dependent on your definition of 'leak'. What it does mean is that there is a pointer to the block somewhere.

Refer to Still Reachable Leak detected by Valgrind for more information.