File: anon-struct.c

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.8-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,388 kB
  • sloc: cpp: 7,438,767; ansic: 1,393,871; asm: 1,012,926; python: 241,728; f90: 86,635; objc: 75,411; lisp: 42,144; pascal: 17,286; sh: 10,027; ml: 5,082; perl: 4,730; awk: 3,523; makefile: 3,349; javascript: 2,251; xml: 892; fortran: 672
file content (27 lines) | stat: -rw-r--r-- 678 bytes parent folder | download | duplicates (11) 
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
 
// RUN: %clang_tysan -O0 %s -o %t && %run %t >%t.out 2>&1
// RUN: FileCheck %s < %t.out

#include <stdio.h>

typedef struct {
  int i1, i1b;
} s1;
typedef struct {
  int i2, i2b, i2c;
} s2;

void f(s1 *s1p, s2 *s2p) {
  s1p->i1 = 2;
  s2p->i2 = 3;
  // CHECK: ERROR: TypeSanitizer: type-aliasing-violation
  // CHECK: WRITE of size 4 at {{.*}} with type int (in <anonymous type> at offset 0) accesses an existing object of type int (in <anonymous type> at offset 0)
  // CHECK: {{#0 0x.* in f .*anon-struct.c:}}[[@LINE-3]]
  printf("%i\n", s1p->i1);
}

int main() {
  s1 s = {.i1 = 1, .i1b = 5};
  f(&s, (s2 *)&s);
}

// CHECK-NOT: ERROR: TypeSanitizer: type-aliasing-violation