7f928d150e
declared with the same name in the same scope.
This breaks several common patterns. First are unused imports:
use foo::bar;
use baz::bar;
Change this code to the following:
use baz::bar;
Second, this patch breaks globs that import names that are shadowed by
subsequent imports. For example:
use foo::*; // including `bar`
use baz::bar;
Change this code to remove the glob:
use foo::{boo, quux};
use baz::bar;
Or qualify all uses of `bar`:
use foo::{boo, quux};
use baz;
... baz::bar ...
Finally, this patch breaks code that, at top level, explicitly imports
`std` and doesn't disable the prelude.
extern crate std;
Because the prelude imports `std` implicitly, there is no need to
explicitly import it; just remove such directives.
The old behavior can be opted into via the `import_shadowing` feature
gate. Use of this feature gate is discouraged.
This implements RFC #116.
Closes #16464.
[breaking-change]
|
||
|---|---|---|
| .. | ||
| deriving | ||
| tt | ||
| asm.rs | ||
| base.rs | ||
| build.rs | ||
| bytes.rs | ||
| cfg.rs | ||
| concat_idents.rs | ||
| concat.rs | ||
| env.rs | ||
| expand.rs | ||
| fmt.rs | ||
| format.rs | ||
| log_syntax.rs | ||
| mtwt.rs | ||
| quote.rs | ||
| source_util.rs | ||
| trace_macros.rs | ||