tests: add v0 structural const value demangling test.
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Eduard-Mihai Burtescu
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2 changed files with 257 additions and 0 deletions
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// build-fail
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// compile-flags: -Z symbol-mangling-version=v0 --crate-name=c
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// NOTE(eddyb) we need `core` for `core::option::Option`, normalize away its
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// disambiguator hash, which can/should change (including between stage{1,2}).
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// normalize-stderr-test: "Cs[0-9a-zA-Z]+_4core" -> "Cs$$HASH_4core"
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// normalize-stderr-test: "core\[[0-9a-f]+\]" -> "core[$$HASH_HEX]"
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#![feature(const_generics, decl_macro, rustc_attrs)]
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#![allow(incomplete_features)]
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pub struct RefByte<const RB: &'static u8>;
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#[rustc_symbol_name]
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//~^ ERROR symbol-name(_RMCsno73SFvQKx_1cINtB0_7RefByteKRh7b_E)
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//~| ERROR demangling(<c[464da6a86cb672f]::RefByte<{&123u8}>>)
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//~| ERROR demangling-alt(<c::RefByte<{&123}>>)
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impl RefByte<{&123}> {}
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// FIXME(eddyb) this was supposed to be `RefMutZst` with `&mut []`,
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// but that is currently not allowed in const generics.
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pub struct RefZst<const RMZ: &'static [u8; 0]>;
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#[rustc_symbol_name]
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//~^ ERROR symbol-name(_RMs_Csno73SFvQKx_1cINtB2_6RefZstKRAEE)
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//~| ERROR demangling(<c[464da6a86cb672f]::RefZst<{&[]}>>)
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//~| ERROR demangling-alt(<c::RefZst<{&[]}>>)
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impl RefZst<{&[]}> {}
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pub struct Array3Bytes<const A3B: [u8; 3]>;
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#[rustc_symbol_name]
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//~^ ERROR symbol-name(_RMs0_Csno73SFvQKx_1cINtB3_11Array3BytesKAh1_h2_h3_EE)
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//~| ERROR demangling(<c[464da6a86cb672f]::Array3Bytes<{[1u8, 2u8, 3u8]}>>)
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//~| ERROR demangling-alt(<c::Array3Bytes<{[1, 2, 3]}>>)
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impl Array3Bytes<{[1, 2, 3]}> {}
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pub struct TupleByteBool<const TBB: (u8, bool)>;
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#[rustc_symbol_name]
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//~^ ERROR symbol-name(_RMs1_Csno73SFvQKx_1cINtB3_13TupleByteBoolKTh1_b0_EE)
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//~| ERROR demangling(<c[464da6a86cb672f]::TupleByteBool<{(1u8, false)}>>)
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//~| ERROR demangling-alt(<c::TupleByteBool<{(1, false)}>>)
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impl TupleByteBool<{(1, false)}> {}
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pub struct OptionUsize<const OU: Option<usize>>;
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// HACK(eddyb) the full mangling is only in `.stderr` because we can normalize
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// the `core` disambiguator hash away there, but not here.
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#[rustc_symbol_name]
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//~^ ERROR symbol-name(_RMs2_Csno73SFvQKx_1cINtB3_11OptionUsizeKVNtINtNtCs
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//~| ERROR demangling(<c[464da6a86cb672f]::OptionUsize<{core[
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//~| ERROR demangling-alt(<c::OptionUsize<{core::option::Option::<usize>::None}>>)
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impl OptionUsize<{None}> {}
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// HACK(eddyb) the full mangling is only in `.stderr` because we can normalize
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// the `core` disambiguator hash away there, but not here.
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#[rustc_symbol_name]
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//~^ ERROR symbol-name(_RMs3_Csno73SFvQKx_1cINtB3_11OptionUsizeKVNtINtNtCs
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//~| ERROR demangling(<c[464da6a86cb672f]::OptionUsize<{core[
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//~| ERROR demangling-alt(<c::OptionUsize<{core::option::Option::<usize>::Some(0)}>>)
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impl OptionUsize<{Some(0)}> {}
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#[derive(PartialEq, Eq)]
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pub struct Foo {
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s: &'static str,
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ch: char,
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slice: &'static [u8],
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}
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pub struct Foo_<const F: Foo>;
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#[rustc_symbol_name]
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//~^ ERROR symbol-name(_RMs4_Csno73SFvQKx_1cINtB3_4Foo_KVNtB3_3FooS1sRe616263_2chc78_5sliceRAh1_h2_h3_EEE)
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//~| ERROR demangling(<c[464da6a86cb672f]::Foo_<{c[464da6a86cb672f]::Foo { s: "abc", ch: 'x', slice: &[1u8, 2u8, 3u8] }}>>)
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//~| ERROR demangling-alt(<c::Foo_<{c::Foo { s: "abc", ch: 'x', slice: &[1, 2, 3] }}>>)
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impl Foo_<{Foo { s: "abc", ch: 'x', slice: &[1, 2, 3] }}> {}
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// NOTE(eddyb) this tests specifically the use of disambiguators in field names,
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// using macros 2.0 hygiene to create a `struct` with conflicting field names.
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macro duplicate_field_name_test($x:ident) {
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#[derive(PartialEq, Eq)]
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pub struct Bar {
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$x: u8,
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x: u16,
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}
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pub struct Bar_<const B: Bar>;
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#[rustc_symbol_name]
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//~^ ERROR symbol-name(_RMs9_Csno73SFvQKx_1cINtB3_4Bar_KVNtB3_3BarS1xh7b_s_1xt1000_EE)
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//~| ERROR demangling(<c[464da6a86cb672f]::Bar_<{c[464da6a86cb672f]::Bar { x: 123u8, x: 4096u16 }}>>)
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//~| ERROR demangling-alt(<c::Bar_<{c::Bar { x: 123, x: 4096 }}>>)
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impl Bar_<{Bar { $x: 123, x: 4096 }}> {}
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}
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duplicate_field_name_test!(x);
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fn main() {}
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@ -0,0 +1,161 @@
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error: symbol-name(_RMCsno73SFvQKx_1cINtB0_7RefByteKRh7b_E)
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--> $DIR/const-generics-structural-demangling.rs:14:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: demangling(<c[464da6a86cb672f]::RefByte<{&123u8}>>)
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--> $DIR/const-generics-structural-demangling.rs:14:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: demangling-alt(<c::RefByte<{&123}>>)
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--> $DIR/const-generics-structural-demangling.rs:14:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: symbol-name(_RMs_Csno73SFvQKx_1cINtB2_6RefZstKRAEE)
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--> $DIR/const-generics-structural-demangling.rs:24:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: demangling(<c[464da6a86cb672f]::RefZst<{&[]}>>)
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--> $DIR/const-generics-structural-demangling.rs:24:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: demangling-alt(<c::RefZst<{&[]}>>)
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--> $DIR/const-generics-structural-demangling.rs:24:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: symbol-name(_RMs0_Csno73SFvQKx_1cINtB3_11Array3BytesKAh1_h2_h3_EE)
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--> $DIR/const-generics-structural-demangling.rs:32:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: demangling(<c[464da6a86cb672f]::Array3Bytes<{[1u8, 2u8, 3u8]}>>)
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--> $DIR/const-generics-structural-demangling.rs:32:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: demangling-alt(<c::Array3Bytes<{[1, 2, 3]}>>)
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--> $DIR/const-generics-structural-demangling.rs:32:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: symbol-name(_RMs1_Csno73SFvQKx_1cINtB3_13TupleByteBoolKTh1_b0_EE)
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--> $DIR/const-generics-structural-demangling.rs:40:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: demangling(<c[464da6a86cb672f]::TupleByteBool<{(1u8, false)}>>)
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--> $DIR/const-generics-structural-demangling.rs:40:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: demangling-alt(<c::TupleByteBool<{(1, false)}>>)
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--> $DIR/const-generics-structural-demangling.rs:40:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: symbol-name(_RMs2_Csno73SFvQKx_1cINtB3_11OptionUsizeKVNtINtNtCs$HASH_4core6option6OptionjE4NoneUE)
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--> $DIR/const-generics-structural-demangling.rs:50:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: demangling(<c[464da6a86cb672f]::OptionUsize<{core[$HASH_HEX]::option::Option::<usize>::None}>>)
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--> $DIR/const-generics-structural-demangling.rs:50:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: demangling-alt(<c::OptionUsize<{core::option::Option::<usize>::None}>>)
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--> $DIR/const-generics-structural-demangling.rs:50:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: symbol-name(_RMs3_Csno73SFvQKx_1cINtB3_11OptionUsizeKVNtINtNtCs$HASH_4core6option6OptionjE4SomeTj0_EE)
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--> $DIR/const-generics-structural-demangling.rs:58:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: demangling(<c[464da6a86cb672f]::OptionUsize<{core[$HASH_HEX]::option::Option::<usize>::Some(0usize)}>>)
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--> $DIR/const-generics-structural-demangling.rs:58:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: demangling-alt(<c::OptionUsize<{core::option::Option::<usize>::Some(0)}>>)
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--> $DIR/const-generics-structural-demangling.rs:58:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: symbol-name(_RMs4_Csno73SFvQKx_1cINtB3_4Foo_KVNtB3_3FooS1sRe616263_2chc78_5sliceRAh1_h2_h3_EEE)
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--> $DIR/const-generics-structural-demangling.rs:72:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: demangling(<c[464da6a86cb672f]::Foo_<{c[464da6a86cb672f]::Foo { s: "abc", ch: 'x', slice: &[1u8, 2u8, 3u8] }}>>)
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--> $DIR/const-generics-structural-demangling.rs:72:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: demangling-alt(<c::Foo_<{c::Foo { s: "abc", ch: 'x', slice: &[1, 2, 3] }}>>)
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--> $DIR/const-generics-structural-demangling.rs:72:1
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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error: symbol-name(_RMs9_Csno73SFvQKx_1cINtB3_4Bar_KVNtB3_3BarS1xh7b_s_1xt1000_EE)
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--> $DIR/const-generics-structural-demangling.rs:88:5
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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...
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LL | duplicate_field_name_test!(x);
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| ------------------------------ in this macro invocation
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= note: this error originates in the macro `duplicate_field_name_test` (in Nightly builds, run with -Z macro-backtrace for more info)
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error: demangling(<c[464da6a86cb672f]::Bar_<{c[464da6a86cb672f]::Bar { x: 123u8, x: 4096u16 }}>>)
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--> $DIR/const-generics-structural-demangling.rs:88:5
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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...
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LL | duplicate_field_name_test!(x);
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| ------------------------------ in this macro invocation
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= note: this error originates in the macro `duplicate_field_name_test` (in Nightly builds, run with -Z macro-backtrace for more info)
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error: demangling-alt(<c::Bar_<{c::Bar { x: 123, x: 4096 }}>>)
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--> $DIR/const-generics-structural-demangling.rs:88:5
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LL | #[rustc_symbol_name]
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| ^^^^^^^^^^^^^^^^^^^^
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...
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LL | duplicate_field_name_test!(x);
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| ------------------------------ in this macro invocation
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= note: this error originates in the macro `duplicate_field_name_test` (in Nightly builds, run with -Z macro-backtrace for more info)
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error: aborting due to 24 previous errors
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