52 lines
1.3 KiB
Rust
52 lines
1.3 KiB
Rust
//@ normalize-stderr-test "(the raw bytes of the constant) \(size: [0-9]*, align: [0-9]*\)" -> "$1 (size: $$SIZE, align: $$ALIGN)"
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//@ normalize-stderr-test "([0-9a-f][0-9a-f] |╾─*ALLOC[0-9]+(\+[a-z0-9]+)?(<imm>)?─*╼ )+ *│.*" -> "HEX_DUMP"
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#![feature(const_refs_to_static)]
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#![allow(static_mut_refs)]
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fn invalid() {
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static S: i8 = 10;
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const C: &bool = unsafe { std::mem::transmute(&S) };
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//~^ERROR: undefined behavior
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//~| expected a boolean
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// This must be rejected here (or earlier), since it's not a valid `&bool`.
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match &true {
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C => {} //~ERROR: could not evaluate constant pattern
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_ => {}
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}
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}
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fn extern_() {
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extern "C" {
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static S: i8;
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}
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const C: &i8 = unsafe { &S };
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//~^ERROR: undefined behavior
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//~| `extern` static
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// This must be rejected here (or earlier), since the pattern cannot be read.
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match &0 {
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C => {} //~ERROR: could not evaluate constant pattern
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_ => {}
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}
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}
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fn mutable() {
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static mut S_MUT: i32 = 0;
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const C: &i32 = unsafe { &S_MUT };
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//~^ERROR: undefined behavior
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//~| encountered reference to mutable memory
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// This *must not build*, the constant we are matching against
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// could change its value!
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match &42 {
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C => {} //~ERROR: could not evaluate constant pattern
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_ => {}
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}
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}
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fn main() {}
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