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// RUN: %clang_tysan -O0 %s -o %t && %run %t >%t.out 2>&1
// RUN: FileCheck %s < %t.out
#include <stdlib.h>
#include <string.h>
float P;
long L;
int main() {
*(int *)&P = 5;
// CHECK: ERROR: TypeSanitizer: type-aliasing-violation
// CHECK: WRITE of size 4 at {{.*}} with type int accesses an existing object of type float
// CHECK: {{#0 0x.* in main .*global.c:}}[[@LINE-3]]
void *mem = malloc(sizeof(long));
*(int *)mem = 6;
memcpy(mem, &L, sizeof(L));
*(int *)mem = 8;
// CHECK: ERROR: TypeSanitizer: type-aliasing-violation
// CHECK: WRITE of size 4 at {{.*}} with type int accesses an existing object of type long
// CHECK: {{#0 0x.* in main .*global.c:}}[[@LINE-3]]
int r = *(((int *)mem) + 1);
// CHECK: ERROR: TypeSanitizer: type-aliasing-violation
// CHECK: READ of size 4 at {{.*}} with type int accesses part of an existing object of type long that starts at offset -4
// CHECK: {{#0 0x.* in main .*global.c:}}[[@LINE-3]]
free(mem);
return r;
}
// CHECK-NOT: ERROR: TypeSanitizer: type-aliasing-violation
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