diff options
Diffstat (limited to 'src/test/ui/proc-macro/gen-macro-rules-hygiene.rs')
-rw-r--r-- | src/test/ui/proc-macro/gen-macro-rules-hygiene.rs | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/test/ui/proc-macro/gen-macro-rules-hygiene.rs b/src/test/ui/proc-macro/gen-macro-rules-hygiene.rs new file mode 100644 index 000000000..195bda82e --- /dev/null +++ b/src/test/ui/proc-macro/gen-macro-rules-hygiene.rs @@ -0,0 +1,23 @@ +// `macro_rules` items produced by transparent macros have correct hygiene in basic cases. +// Local variables and labels are hygienic, items are not hygienic. +// `$crate` refers to the crate that defines `macro_rules` and not the outer transparent macro. + +// aux-build:gen-macro-rules-hygiene.rs + +#[macro_use] +extern crate gen_macro_rules_hygiene; + +struct ItemUse; + +gen_macro_rules!(); +//~^ ERROR use of undeclared label `'label_use` +//~| ERROR cannot find value `local_use` in this scope + +fn main() { + 'label_use: loop { + let local_use = 1; + generated!(); + ItemDef; // OK + local_def; //~ ERROR cannot find value `local_def` in this scope + } +} |