cppcheck/addons/test/cert-test.c

// To test:
// ~/cppcheck/cppcheck --dump cert-test.c && python ../cert.py -verify cert-test.c.dump
struct S {
    short a;
    short b;
};

#pragma pack()
struct PackedStruct {
    short a;
    short b;
};

void dostuff(int *data);

void exp05()
{
    const int x = 42;
    int y = (int)x;

    int *p;
    p = (int *)&x; // cert-EXP05-C

    const int data[] = {1,2,3,4};
    dostuff(data); // cert-EXP05-C
}

void print(const char *p);
void exp05_fp() {
    print("hello");
}

void exp42()
{
    struct S s1 = {1,2};
    struct S s2 = {1,2};
    memcmp(&s1, &s2, sizeof(struct S)); // cert-EXP42-C

    struct PackedStruct s3 = {1,2};
    struct PackedStruct s4 = {1,2};
    memcmp(&s3, &s4, sizeof(struct S));
}

void exp46()
{
    if ((x == y) & z) {} // cert-EXP46-c
}

unsigned char int31(int x)
{
    x = (unsigned char)1000; // cert-INT31-c
    x = (signed char)0xff; // cert-INT31-c
    x = (unsigned char)-1; // cert-INT31-c
    x = (unsigned long long)-1; // cert-INT31-c
}

void msc30()
{
    unsigned int num = rand(); // cert-MSC30-c
    int rand = 5;
    int a = rand;
}

void exp15()
{
    int x=5, y=7;

    if(x==y);                            //cert-EXP15-C
    {
        printf("not working\n");
    }
    if(x)
        ;
}

void str03()
{
    char *string_data=(char*)malloc(16);
    char a[16];
    int d;
    strncpy(a, string_data, sizeof(a));     //cert-STR03-C
    strncpy(a, string_data, 5); d=sizeof(int);
}

void str05()
{
    int x=5, y=7;

    if(x==y);                            //cert-EXP15-C
    {
        printf("not working\n");
    }
    if(x)
        ;
}

void str07(char *buf, const char *newBuf)
{
    const char *str="test";
    strcat(buf,"bla");
    strcat(buf, str);    //cert-STR07-C
    strcat(buf, newBuf); //cert-STR07-C
    strcpy(str, newBuf); //cert-STR07-C
}