Rollup merge of #105208 - chenyukang:yukang/fix-105069, r=cjgillot

Add AmbiguityError for inconsistent resolution for an import

Fixes #105069
Fixes #83950

2 files changed, 32 insertions, 0 deletions

diff --git a/src/test/ui/resolve/issue-105069.rs b/src/test/ui/resolve/issue-105069.rs
new file mode 100644
index 00000000000..73455cf7711
--- /dev/null
+++ b/src/test/ui/resolve/issue-105069.rs
@@ -0,0 +1,11 @@
+use self::A::*;
+use V; //~ ERROR `V` is ambiguous
+use self::B::*;
+enum A {
+    V
+}
+enum B {
+    V
+}
+
+fn main() {}
diff --git a/src/test/ui/resolve/issue-105069.stderr b/src/test/ui/resolve/issue-105069.stderr
new file mode 100644
index 00000000000..1e6c9c6e2dc
--- /dev/null
+++ b/src/test/ui/resolve/issue-105069.stderr
@@ -0,0 +1,21 @@
+error[E0659]: `V` is ambiguous
+  --> $DIR/issue-105069.rs:2:5
+   |
+LL | use V;
+   |     ^ ambiguous name
+   |
+   = note: ambiguous because of multiple potential import sources
+note: `V` could refer to the variant imported here
+  --> $DIR/issue-105069.rs:1:5
+   |
+LL | use self::A::*;
+   |     ^^^^^^^^^^
+note: `V` could also refer to the variant imported here
+  --> $DIR/issue-105069.rs:3:5
+   |
+LL | use self::B::*;
+   |     ^^^^^^^^^^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0659`.