1 // check-pass 2 // compile-flags: -Z span-debug --error-format human 3 // aux-build:test-macros.rs 4 5 // Regression test for issue #75930 6 // Tests that we cfg-strip all targets before invoking 7 // a derive macro 8 // We need '--error-format human' to stop compiletest from 9 // trying to interpret proc-macro output as JSON messages 10 // (a pretty-printed struct may cause a line to start with '{' ) 11 // FIXME: We currently lose spans here (see issue #43081) 12 13 #![no_std] // Don't load unnecessary hygiene information from std 14 extern crate std; 15 16 #[macro_use] 17 extern crate test_macros; 18 19 #[print_helper(a)] //~ WARN derive helper attribute is used before it is introduced 20 //~| WARN this was previously accepted 21 #[cfg_attr(not(FALSE), allow(dead_code))] 22 #[print_attr] 23 #[derive(Print)] 24 #[print_helper(b)] 25 struct Foo<#[cfg(FALSE)] A, B> { 26 #[cfg(FALSE)] first: String, 27 #[cfg_attr(FALSE, deny(warnings))] second: bool, 28 third: [u8; { 29 #[cfg(FALSE)] struct Bar; 30 #[cfg(not(FALSE))] struct Inner; 31 #[cfg(FALSE)] let a = 25; 32 match true { 33 #[cfg(FALSE)] true => {}, 34 #[cfg_attr(not(FALSE), allow(warnings))] false => {}, 35 _ => {} 36 }; 37 38 #[print_helper(should_be_removed)] 39 fn removed_fn() { 40 #![cfg(FALSE)] 41 } 42 43 #[print_helper(c)] #[cfg(not(FALSE))] fn kept_fn() { 44 #![cfg(not(FALSE))] 45 let my_val = true; 46 } 47 48 enum TupleEnum { 49 Foo( 50 #[cfg(FALSE)] u8, 51 #[cfg(FALSE)] bool, 52 #[cfg(not(FALSE))] i32, 53 #[cfg(FALSE)] String, u8 54 ) 55 } 56 57 struct TupleStruct( 58 #[cfg(FALSE)] String, 59 #[cfg(not(FALSE))] i32, 60 #[cfg(FALSE)] bool, 61 u8 62 ); 63 64 fn plain_removed_fn() { 65 #![cfg_attr(not(FALSE), cfg(FALSE))] 66 } 67 68 0 69 }], 70 #[print_helper(d)] 71 fourth: B 72 } 73 74 fn main() {} 75