cppcheck/addons/test/cert-test.c

203 lines
3.7 KiB
C

// To test:
// ~/cppcheck/cppcheck --dump cert-test.c && python ../cert.py -verify cert-test.c.dump
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
struct S {
short a;
short b;
};
#pragma pack()
struct PackedStruct {
short a;
short b;
};
void api01()
{
const size_t String_Size = 20;
struct bad_node_s
{
char name[String_Size];
struct bad_node_s* next; // cert-API01-C
};
struct good_node_s
{
struct good_node_s* next;
char name[String_Size];
};
struct also_good_node_s
{
struct also_good_node_s* next;
char *name;
};
}
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(int x, int y, int z)
{
if ((x == y) & z) {} // cert-EXP46-c
}
void 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
unsigned char c;
c = 256;
c = -1;
// issue #10782
uint16_t * ptr;
uint32_t var = 65536;
ptr = (uint16_t *)var;
}
void env33()
{
system("chmod -x $(which chmod)"); // cert-ENV33-C
system(""); // cert-ENV33-C
system(NULL); // no-warning
system(0); // no-warning
const int *np = NULL;
system(np); // no-warning
int system;
}
void msc24()
{
struct S {
int x; int fopen;
};
struct S s;
time_t rawtime;
struct tm *timeinfo;
char buffer[256];
int i;
long int li;
long long int lli;
FILE *f;
s.fopen = 123;
f = fopen ("myfile.txt","w+"); //cert-MSC24-C
setbuf ( f , buffer ); //cert-MSC24-C
for ( i='A' ; i<='Z' ; i++)
fputc ( i, f);
rewind (f); //cert-MSC24-C
fclose (f);
time ( &rawtime );
timeinfo = localtime ( &rawtime );
printf ( "The current date/time is: %s", asctime (timeinfo) ); //cert-MSC24-C
float n = atof (buffer); //cert-MSC24-C
float m = sin (n*M_PI/180);
i = atoi (buffer); //cert-MSC24-C
li = atol(buffer); //cert-MSC24-C
lli = atoll(buffer); //cert-MSC24-C
time (&rawtime);
printf ("The current local time is: %s", ctime (&rawtime)); //cert-MSC24-C
freopen ("myfile.txt","w",stdout); //cert-MSC24-C
printf ("This sentence is redirected to a file.");
fclose (stdout);
}
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(buf, newBuf); //cert-STR07-C
}
void str11()
{
const char str[3]="abc"; //cert-STR11-C
const char *x[10]; x[3]="def";
}