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test-macros: Avoid always producing errors in #[derive(Print)]

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This commit is contained in:
Vadim Petrochenkov 2020-05-31 00:04:57 +03:00
parent 74e8046834
commit 4d5ce340cd
3 changed files with 5 additions and 33 deletions
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3
src/test/ui/proc-macro/auxiliary/test-macros.rs
View File

@ -108,5 +108,6 @@ pub fn print_attr(_: TokenStream, input: TokenStream) -> TokenStream {
#[proc_macro_derive(Print, attributes(print_helper))]
pub fn print_derive(input: TokenStream) -> TokenStream {
print_helper(input, "DERIVE")
print_helper(input, "DERIVE");
TokenStream::new()
}

5
src/test/ui/proc-macro/dollar-crate.rs
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@ -1,3 +1,4 @@
// check-pass
// edition:2018
// aux-build:test-macros.rs
// aux-build:dollar-crate-external.rs
@ -23,7 +24,7 @@ mod local {
struct A($crate::S);
#[derive(Print)]
struct D($crate::S); //~ ERROR the name `D` is defined multiple times
struct D($crate::S);
};
}
@ -33,7 +34,7 @@ mod local {
mod external {
use crate::dollar_crate_external;
dollar_crate_external::external!(); //~ ERROR the name `D` is defined multiple times
dollar_crate_external::external!();
}
fn main() {}

30
src/test/ui/proc-macro/dollar-crate.stderr
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@ -1,30 +0,0 @@
error[E0428]: the name `D` is defined multiple times
--> $DIR/dollar-crate.rs:26:13
|
LL | struct D($crate::S);
| ^^^^^^^^^^^^^^^^^^^^
| |
| `D` redefined here
| previous definition of the type `D` here
...
LL | local!();
| --------- in this macro invocation
|
= note: `D` must be defined only once in the type namespace of this module
= note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0428]: the name `D` is defined multiple times
--> $DIR/dollar-crate.rs:36:5
|
LL | dollar_crate_external::external!();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| |
| `D` redefined here
| previous definition of the type `D` here
|
= note: `D` must be defined only once in the type namespace of this module
= note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0428`.