Segmentation fault during an illegal kernel compilation

[tpongo-afk]

When trying to compile the kernel below, I get a "Segmentation fault (core dumped)" message if I use my IGPU as device target or

FPToSI source must be FP or FP vector

LLVM ERROR: Broken module found, compilation aborted!
Aborted (core dumped)

if I use my cpu as target.

__kernel void test() {
    int a[3] = {1, 2, 3};
    int3 b = (int3)(a);
    printf("%d\n", b);
}

The kernel is wrong, instead of (int3)(a[0], a[1], a[2]), I wrote int3(a) unassumingly. My problem is that there was no error message from the kernel compiler, which I believe is not the intended behavior and made debugging a longer kernel quite difficult.

I am not sure whether this repository is the correct one to submit this issue to but I hope you can give some guidance as of where to turn with this bug.

[wenju-he]

there was no error message from the kernel compiler, which I believe is not the intended behavior

Yes, the compiler should diagnose the invalid conversion from pointer a to vector. This will be fixed by llvm/llvm-project#180318
After the fix, the compiler will compile fail and save following error and warning message to build log.

1:3:21: error: initializing 'int3' (vector of 3 'int' values) with an expression of incompatible type '__private int[3]'
    3 |     int3 b = (int3)(a);
      |                     ^
1:4:20: warning: format specifies type 'int' but the argument has type 'int3' (vector of 3 'int' values)
    4 |     printf("%d\n", b);
      |             ~~     ^
      |             %v3hld