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#[repr(C)]
struct ReallyBig {
_a: [u8; usize::MAX],
}
// The limit for "too big for the current architecture" is dependent on the target pointer size
// however it's artificially limited on 64 bits
// logic copied from rustc_target::abi::TargetDataLayout::obj_size_bound()
const fn max_size() -> usize {
#[cfg(target_pointer_width = "16")]
{
1 << 15
}
#[cfg(target_pointer_width = "32")]
{
1 << 31
}
#[cfg(target_pointer_width = "64")]
{
1 << 47
}
#[cfg(not(any(
target_pointer_width = "16",
target_pointer_width = "32",
target_pointer_width = "64"
)))]
{
isize::MAX as usize
}
}
extern "C" {
static FOO: [u8; 1];
static BAR: [u8; max_size() - 1];
static BAZ: [u8; max_size()]; //~ ERROR extern static is too large
static UWU: [usize; usize::MAX]; //~ ERROR extern static is too large
static A: ReallyBig; //~ ERROR extern static is too large
}
fn main() {}
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