mirror of https://github.com/rust-lang/rust
56 lines
1.2 KiB
Rust
56 lines
1.2 KiB
Rust
// Regression tests for issue #55414, expansion happens in the value of a key-value attribute,
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// and the expanded expression is more complex than simply a macro call.
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//@ aux-build:key-value-expansion.rs
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#![feature(rustc_attrs)]
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extern crate key_value_expansion;
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// Minimized test case.
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macro_rules! bug {
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($expr:expr) => {
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#[rustc_dummy = $expr] // Any key-value attribute, not necessarily `doc`
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struct S;
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};
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}
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// Any expressions containing macro call `X` that's more complex than `X` itself.
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// Parentheses will work.
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bug!((column!())); //~ ERROR attribute value must be a literal
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// Original test case.
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macro_rules! bug {
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() => {
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bug!("bug" + stringify!(found)); //~ ERROR attribute value must be a literal
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};
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($test:expr) => {
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#[doc = $test]
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struct Test {}
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};
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}
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bug!();
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// Test case from #66804.
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macro_rules! doc_comment {
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($x:expr) => {
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#[doc = $x]
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extern {}
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};
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}
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macro_rules! some_macro {
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($t1: ty) => {
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doc_comment! {format!("{coor}", coor = stringify!($t1)).as_str()}
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//~^ ERROR attribute value must be a literal
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};
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}
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some_macro!(u8);
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fn main() {}
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