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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /compiler/rustc_error_codes/src/error_codes/E0466.md | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'compiler/rustc_error_codes/src/error_codes/E0466.md')
-rw-r--r-- | compiler/rustc_error_codes/src/error_codes/E0466.md | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/compiler/rustc_error_codes/src/error_codes/E0466.md b/compiler/rustc_error_codes/src/error_codes/E0466.md new file mode 100644 index 000000000..7aefedbc0 --- /dev/null +++ b/compiler/rustc_error_codes/src/error_codes/E0466.md @@ -0,0 +1,34 @@ +Macro import declaration was malformed. + +Erroneous code examples: + +```compile_fail,E0466 +#[macro_use(a_macro(another_macro))] // error: invalid import declaration +extern crate core as some_crate; + +#[macro_use(i_want = "some_macros")] // error: invalid import declaration +extern crate core as another_crate; +``` + +This is a syntax error at the level of attribute declarations. The proper +syntax for macro imports is the following: + +```ignore (cannot-doctest-multicrate-project) +// In some_crate: +#[macro_export] +macro_rules! get_tacos { + ... +} + +#[macro_export] +macro_rules! get_pimientos { + ... +} + +// In your crate: +#[macro_use(get_tacos, get_pimientos)] // It imports `get_tacos` and +extern crate some_crate; // `get_pimientos` macros from some_crate +``` + +If you would like to import all exported macros, write `macro_use` with no +arguments. |