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// Some non-controversial subset of ambiguities "modern macro name" vs "macro_rules"
// is disambiguated to mitigate regressions from macro modularization.
// Scoping for `macro_rules` behaves like scoping for `let` at module level, in general.
#![feature(decl_macro)]
fn same_unnamed_mod() {
macro m() { 0 }
macro_rules! m { () => (()) }
m!() // OK
}
fn nested_unnamed_mod() {
macro m() { 0 }
{
macro_rules! m { () => (()) }
m!() // OK
}
}
fn nested_unnamed_mod_fail() {
macro_rules! m { () => (()) }
{
macro m() { 0 }
m!() //~ ERROR `m` is ambiguous
}
}
fn nexted_named_mod_fail() {
macro m() { 0 }
#[macro_use]
mod inner {
macro_rules! m { () => (()) }
}
m!() //~ ERROR `m` is ambiguous
}
fn main() {}
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