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// RUN: %clang_tysan -O0 %s -o %t && %run %t >%t.out 2>&1
// RUN: FileCheck %s < %t.out
#include <stdio.h>
typedef struct S1 {
int i1;
} s1;
typedef struct S2 {
int i2;
} s2;
void g(int *i) {
*i = 5;
printf("%i\n", *i);
}
void h(char *c) {
*c = 5;
printf("%i\n", (int)*c);
}
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 S2 at offset 0) accesses an existing object of type int (in S1 at offset 0)
// CHECK: {{#0 0x.* in f .*struct.c:}}[[@LINE-3]]
printf("%i\n", s1p->i1);
}
int main() {
s1 s = {.i1 = 1};
f(&s, (s2 *)&s);
g(&s.i1);
h((char *)&s.i1);
}
// CHECK-NOT: ERROR: TypeSanitizer: type-aliasing-violation
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