mirror of https://github.com/rust-lang/rust.git
48 lines
1.2 KiB
Rust
48 lines
1.2 KiB
Rust
// skip-filecheck
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//@ test-mir-pass: GVN
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//@ compile-flags: -Zmir-enable-passes=+RemoveZsts
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// Verify that we can pretty print invalid constants.
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#![feature(adt_const_params, unsized_const_params)]
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#![allow(incomplete_features)]
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#[derive(Copy, Clone)]
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#[repr(u32)]
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enum E {
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A,
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B,
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C,
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}
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#[derive(Copy, Clone)]
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enum Empty {}
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// EMIT_MIR invalid_constant.main.RemoveZsts.diff
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// EMIT_MIR invalid_constant.main.GVN.diff
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fn main() {
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// An invalid char.
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union InvalidChar {
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int: u32,
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chr: char,
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}
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let _invalid_char = unsafe { InvalidChar { int: 0x110001 }.chr };
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// An enum with an invalid tag. Regression test for #93688.
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union InvalidTag {
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int: u32,
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e: E,
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}
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let _invalid_tag = [unsafe { InvalidTag { int: 4 }.e }];
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// An enum without variants. Regression test for #94073.
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union NoVariants {
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int: u32,
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empty: Empty,
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}
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let _enum_without_variants = [unsafe { NoVariants { int: 0 }.empty }];
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// A non-UTF-8 string slice. Regression test for #75763 and #78520.
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struct Str<const S: &'static str>;
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let _non_utf8_str: Str<{ unsafe { std::mem::transmute::<&[u8], &str>(&[0xC0, 0xC1, 0xF5]) } }>;
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}
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