cppcheck/test/synthetic/controlflow.c

//////////////////////////////
// control flow analysis
//////////////////////////////

int buf[2];

void in_if(int a) {
    if (a==100)
        buf[a] = 0; // BUG
}

void before_if(int a) {
    buf[a] = 0; // WARNING
    if (a==100) {}
}

void after_if(int a) {
    if (a==100) {}
    buf[a] = 0; // WARNING
}

void in_for(void) {
    int x;
    for (x = 0; x<100; x++) {
        buf[x] = 0; // BUG
    }
}

void after_for(void) {
    int x;
    for (x = 0; x<100; x++) {}
    buf[x] = 0; // BUG
}

void in_switch(int x) {
    switch (x) {
    case 100:
        buf[x] = 0; // BUG
        break;
    }
}

void before_switch(int x) {
    buf[x] = 0; // WARNING
    switch (x) {
    case 100:
        break;
    }
}

void after_switch(int x) {
    switch (x) {
    case 100:
        break;
    }
    buf[x] = 0; // WARNING
}

void in_while(void) {
    int x = 0;
    while (x<100) {
        buf[x] = 0; // BUG
        x++;
    }
}

void after_while(void) {
    int x = 0;
    while (x<100)
        x++;
    buf[x] = 0; // BUG
}