SonarQube is not reporting memory leaks

SonarQube Server / Community Build
3

Hi,

Sonarqube not detecting memory leaks in the code even though all rules are activated in the quality profile .I am using sonarqube 7.6
Can you suggest how to fix this

Below is my code

#include <stdio.h>
#include <unistd.h>
#define BUFSIZE1 512
#define BUFSIZE2 ((BUFSIZE1/2) - 8)

int main(int argc, char **argv) {
char *buf1R1;
char *buf2R1;
char *buf1R2;
buf1R1 = (char *) malloc(BUFSIZE2);
buf2R1 = (char *) malloc(BUFSIZE2);
buf1R2 = (char *) malloc(BUFSIZE1);
strncpy(buf1R2, argv[1], BUFSIZE1-1);
}

Thanks