File: no-outofbounds.c

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
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);
}