Use edition of macro_rules when compiling the macro

Author: ehuss

compiler/rustc_resolve/src/def_collector.rs

@@ -191,7 +191,7 @@ impl<'a, 'ra, 'tcx> visit::Visitor<'a> for DefCollector<'a, 'ra, 'tcx> {
             ItemKind::Const(..) => DefKind::Const,
             ItemKind::Fn(..) | ItemKind::Delegation(..) => DefKind::Fn,
             ItemKind::MacroDef(def) => {
-                let edition = self.resolver.tcx.sess.edition();
+                let edition = i.span.edition();
                 let macro_data =
                     self.resolver.compile_macro(def, i.ident, &i.attrs, i.span, i.id, edition);
                 let macro_kind = macro_data.ext.macro_kind();

tests/ui/proc-macro/macro_rules_edition_from_pm.edition2021.stderr

@@ -7,7 +7,7 @@
 //@[edition2021] edition:2021
 //@[edition2024] edition:2024
 //@[edition2024] compile-flags: -Zunstable-options
-//@[edition2024] check-pass
+//@ check-pass
 
 // This checks how the expr fragment specifier works.
 macro_rules_edition_pm::make_edition_macro!{}
@@ -21,8 +21,7 @@ macro_rules_edition_pm::make_nested_edition_macro!{}
 make_inner!{}
 
 const _: () = {
-    assert!(edition_inner!(const {}) == 2024);
-    //[edition2021]~^ ERROR evaluation of constant value failed
+    assert!(edition_inner!(const {}) == 2021);
 };
 
 fn main() {}

tests/ui/proc-macro/macro_rules_edition_from_pm.edition2024.stderr

@@ -2,7 +2,7 @@
 // See https://github.com/rust-lang/rust/issues/132906
 
 //@ revisions: edition2021 edition2024
-//@[edition2021] check-pass
+//@ check-pass
 //@[edition2021] edition:2021
 //@[edition2024] edition:2024
 //@[edition2024] compile-flags: -Zunstable-options
@@ -11,7 +11,6 @@
 unsafe_attributes_pm::missing_unsafe!();
 
 unsafe_attributes_pm::macro_rules_missing_unsafe!();
-//[edition2024]~^ ERROR unsafe attribute used without unsafe
 
 make_fn!();