1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
// Regression tests for issue #55414, expansion happens in the value of a key-value attribute,
// and the expanded expression is more complex than simply a macro call.
//@ proc-macro: key-value-expansion.rs
#![feature(rustc_attrs)]
extern crate key_value_expansion;
// Minimized test case.
macro_rules! bug {
($expr:expr) => {
#[rustc_dummy = $expr] // Any key-value attribute, not necessarily `doc`
struct S;
};
}
// Any expressions containing macro call `X` that's more complex than `X` itself.
// Parentheses will work.
bug!((column!())); //~ ERROR attribute value must be a literal
// Original test case.
macro_rules! bug {
() => {
bug!("bug" + stringify!(found)); //~ ERROR attribute value must be a literal
};
($test:expr) => {
#[doc = $test]
struct Test {}
};
}
bug!();
// Test case from #66804.
macro_rules! doc_comment {
($x:expr) => {
#[doc = $x]
extern {}
};
}
macro_rules! some_macro {
($t1: ty) => {
doc_comment! {format!("{coor}", coor = stringify!($t1)).as_str()}
//~^ ERROR attribute value must be a literal
};
}
some_macro!(u8);
fn main() {}
|
