File: no-outofbounds.c

package info (click to toggle)
llvm-toolchain-16 1%3A16.0.6-15~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,634,792 kB
  • sloc: cpp: 6,179,261; ansic: 1,216,205; asm: 741,319; python: 196,614; objc: 75,325; f90: 49,640; lisp: 32,396; pascal: 12,286; sh: 9,394; perl: 7,442; ml: 5,494; awk: 3,523; makefile: 2,723; javascript: 1,206; xml: 886; fortran: 581; cs: 573
file content (32 lines) | stat: -rw-r--r-- 883 bytes parent folder | download | duplicates (10) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
 
// RUN: %clang_analyze_cc1 -analyzer-checker=core,alpha.core,alpha.unix,alpha.security.ArrayBound -verify %s
// expected-no-diagnostics

//===----------------------------------------------------------------------===//
// This file tests cases where we should not flag out-of-bounds warnings.
//===----------------------------------------------------------------------===//

void f(void) {
  long x = 0;
  char *y = (char*) &x;
  char c = y[0] + y[1] + y[2]; // no-warning
  short *z = (short*) &x;
  short s = z[0] + z[1]; // no-warning
}

void g(void) {
  int a[2];
  char *b = (char*)a;
  b[3] = 'c'; // no-warning
}

typedef typeof(sizeof(int)) size_t;
void *malloc(size_t);
void free(void *);

void field(void) {
  struct vec { size_t len; int data[0]; };
  struct vec *a = malloc(sizeof(struct vec) + 10*sizeof(int));
  a->len = 10;
  a->data[1] = 5; // no-warning
  free(a);
}