tests/ui/layout/enum-scalar-pair-int-ptr.rs


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//@ normalize-stderr-test: "pref: Align\([1-8] bytes\)" -> "pref: $$PREF_ALIGN"
//@ normalize-stderr-test: "Int\(I[0-9]+," -> "Int(I?,"
//@ normalize-stderr-test: "valid_range: 0..=[0-9]+" -> "valid_range: $$VALID_RANGE"

//! Enum layout tests related to scalar pairs with an int/ptr common primitive.

#![feature(rustc_attrs)]
#![feature(never_type)]
#![crate_type = "lib"]

#[rustc_layout(abi)]
enum ScalarPairPointerWithInt { //~ERROR: abi: ScalarPair
    A(usize),
    B(Box<()>),
}

// Negative test--ensure that pointers are not commoned with integers
// of a different size. (Assumes that no target has 8 bit pointers, which
// feels pretty safe.)
#[rustc_layout(abi)]
enum NotScalarPairPointerWithSmallerInt { //~ERROR: abi: Memory
    A(u8),
    B(Box<()>),
}