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// RUN: %clang_tysan -O0 %s -o %t && %run %t >%t.out 2>&1
// RUN: FileCheck %s < %t.out
// https://github.com/llvm/llvm-project/issues/45282
#include <stdio.h>
int main(void) {
double a[29], b[20];
int i, j;
for (i = 0; i < 20; ++i) {
b[i] = 2.01f + 1.f;
((float *)a)[i] = 2.01f * 2.0145f;
((float *)a + 38)[i] = 2.01f * 1.0123f;
}
// CHECK: TypeSanitizer: type-aliasing-violation on address
// CHECK-NEXT: WRITE of size 8 at {{.+}} with type double accesses an existing object of type float
// CHECK-NEXT: in main {{.*/?}}violation-pr45282.c:25
// loop of problems
for (j = 2; j <= 4; ++j) {
a[j - 1] = ((float *)a)[j] * ((float *)a + 38)[j - 1];
((float *)a + 38)[j - 1] = ((float *)a)[j - 1] + b[j - 1];
}
printf("((float *)a + 38)[2] = %f\n", ((float *)a + 38)[2]);
return 0;
}
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