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tests: Add regression test for derive token invalidation (#81099)

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Vadim Petrochenkov 2025-02-24 17:49:20 +03:00
parent bb029a1d3f
commit db6da1268e
2 changed files with 172 additions and 0 deletions
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23
tests/ui/proc-macro/derive-cfg-nested-tokens.rs Normal file
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@ -0,0 +1,23 @@
// A regression test for issue #81099.
//@ check-pass
//@ proc-macro:test-macros.rs
#![feature(stmt_expr_attributes)]
#![feature(proc_macro_hygiene)]
#[macro_use]
extern crate test_macros;
#[derive(Clone, Copy)]
struct S {
// `print_args` runs twice
// - on eagerly configured `S` (from `impl Copy`), only 11 should be printed
// - on non-configured `S` (from `struct S`), both 10 and 11 should be printed
field: [u8; #[print_attr] {
#[cfg(FALSE)] { 10 }
#[cfg(not(FALSE))] { 11 }
}],
}
fn main() {}

149
tests/ui/proc-macro/derive-cfg-nested-tokens.stdout Normal file
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PRINT-ATTR INPUT (DISPLAY): { #[cfg(not(FALSE))] { 11 } }
PRINT-ATTR INPUT (DEBUG): TokenStream [
Group {
delimiter: Brace,
stream: TokenStream [
Punct {
ch: '#',
spacing: Alone,
span: #0 bytes(491..492),
},
Group {
delimiter: Bracket,
stream: TokenStream [
Ident {
ident: "cfg",
span: #0 bytes(493..496),
},
Group {
delimiter: Parenthesis,
stream: TokenStream [
Ident {
ident: "not",
span: #0 bytes(497..500),
},
Group {
delimiter: Parenthesis,
stream: TokenStream [
Ident {
ident: "FALSE",
span: #0 bytes(501..506),
},
],
span: #0 bytes(500..507),
},
],
span: #0 bytes(496..508),
},
],
span: #0 bytes(492..509),
},
Group {
delimiter: Brace,
stream: TokenStream [
Literal {
kind: Integer,
symbol: "11",
suffix: None,
span: #0 bytes(513..515),
},
],
span: #0 bytes(511..517),
},
],
span: #0 bytes(452..523),
},
]
PRINT-ATTR INPUT (DISPLAY): { #[cfg(FALSE)] { 10 } #[cfg(not(FALSE))] { 11 } }
PRINT-ATTR INPUT (DEBUG): TokenStream [
Group {
delimiter: Brace,
stream: TokenStream [
Punct {
ch: '#',
spacing: Alone,
span: #0 bytes(462..463),
},
Group {
delimiter: Bracket,
stream: TokenStream [
Ident {
ident: "cfg",
span: #0 bytes(464..467),
},
Group {
delimiter: Parenthesis,
stream: TokenStream [
Ident {
ident: "FALSE",
span: #0 bytes(468..473),
},
],
span: #0 bytes(467..474),
},
],
span: #0 bytes(463..475),
},
Group {
delimiter: Brace,
stream: TokenStream [
Literal {
kind: Integer,
symbol: "10",
suffix: None,
span: #0 bytes(478..480),
},
],
span: #0 bytes(476..482),
},
Punct {
ch: '#',
spacing: Alone,
span: #0 bytes(491..492),
},
Group {
delimiter: Bracket,
stream: TokenStream [
Ident {
ident: "cfg",
span: #0 bytes(493..496),
},
Group {
delimiter: Parenthesis,
stream: TokenStream [
Ident {
ident: "not",
span: #0 bytes(497..500),
},
Group {
delimiter: Parenthesis,
stream: TokenStream [
Ident {
ident: "FALSE",
span: #0 bytes(501..506),
},
],
span: #0 bytes(500..507),
},
],
span: #0 bytes(496..508),
},
],
span: #0 bytes(492..509),
},
Group {
delimiter: Brace,
stream: TokenStream [
Literal {
kind: Integer,
symbol: "11",
suffix: None,
span: #0 bytes(513..515),
},
],
span: #0 bytes(511..517),
},
],
span: #0 bytes(452..523),
},
]