test/Analysis/taint-generic.c

// RUN: %clang_cc1  -analyze -analyzer-checker=experimental.security.taint,experimental.security.ArrayBoundV2 -Wno-format-security -verify %s

int scanf(const char *restrict format, ...);
int getchar(void);

#define BUFSIZE 10

int Buffer[BUFSIZE];
void bufferScanfDirect(void)
{
  int n;
  scanf("%d", &n);
  Buffer[n] = 1; // expected-warning {{Out of bound memory access }}
}

void bufferScanfArithmetic1(int x) {
  int n;
  scanf("%d", &n);
  int m = (n - 3);
  Buffer[m] = 1; // expected-warning {{Out of bound memory access }}
}

void bufferScanfArithmetic2(int x) {
  int n;
  scanf("%d", &n);
  int m = 100 / (n + 3) * x;
  Buffer[m] = 1; // expected-warning {{Out of bound memory access }}
}

void bufferScanfAssignment(int x) {
  int n;
  scanf("%d", &n);
  int m;
  if (x > 0) {
    m = n;
    Buffer[m] = 1; // expected-warning {{Out of bound memory access }}
  }
}

void scanfArg() {
  int t;
  scanf("%d", t); // expected-warning {{conversion specifies type 'int *' but the argument has type 'int'}}
}

void bufferGetchar(int x) {
  int m = getchar();
  Buffer[m] = 1;  //expected-warning {{Out of bound memory access }}
}

typedef struct _FILE FILE;
extern FILE *stdin;
int fscanf(FILE *restrict stream, const char *restrict format, ...);
int sprintf(char *str, const char *format, ...);
void setproctitle(const char *fmt, ...);

void testUncontrolledFormatString() {
  char s[80];
  fscanf(stdin, "%s", s);
  char buf[128];
  sprintf(buf,s); // expected-warning {{Uncontrolled Format String}}
  setproctitle(s, 3); // expected-warning {{Uncontrolled Format String}}
}