LLVM abort when using pointer arithmetic in unsafe statics

[mahkoh]

static X: uint = unsafe { *(0 as *const uint) };

rustc: /build/rust-git/src/rust/src/llvm/include/llvm/Support/Casting.h:237: typename llvm::cast_retty<X, Y*>::ret_type llvm::cast(Y*) [with X = llvm::GlobalVariable; Y = llvm::Value; typename llvm::cast_retty<X, Y*>::ret_type = llvm::GlobalVariable*]: Assertion `isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' failed.

struct X {
    i: int,
    j: u8,
}

static SIZE_OF_X: uint = unsafe { &(*(0 as *const [X, ..2]))[1] as *const X as uint };

same as above

[mahkoh]

Looks like #17233. Either way, the what is the null pointer dereference up there supposed to do?

[ben0x539]

Same error, probably comes down to the pointer deref.

extern crate libc;
fn main() {
    unsafe {
        static FOO: *const i8 = *(&"foo\0" as *const &str as *const *const i8);
        libc::puts(FOO);
    }
}