Rollup merge of #87107 - oli-obk:tait_double, r=nikomatsakis

Loop over all opaque types instead of looking at just the first one with the same DefId

This exposed a bug in VecMap and is needed for https://github.com/rust-lang/rust/pull/86410 anyway

r? ``@spastorino``

cc ``@nikomatsakis``

1 files changed, 6 insertions, 4 deletions

diff --git a/compiler/rustc_data_structures/src/vec_map.rs b/compiler/rustc_data_structures/src/vec_map.rs
index 73b04d3329c..1786fa340cc 100644
--- a/compiler/rustc_data_structures/src/vec_map.rs
+++ b/compiler/rustc_data_structures/src/vec_map.rs
@@ -127,13 +127,15 @@ impl<K, V> IntoIterator for VecMap<K, V> {
     }
 }
 
-impl<K, V> Extend<(K, V)> for VecMap<K, V> {
+impl<K: PartialEq, V> Extend<(K, V)> for VecMap<K, V> {
     fn extend<I: IntoIterator<Item = (K, V)>>(&mut self, iter: I) {
-        self.0.extend(iter);
+        for (k, v) in iter {
+            self.insert(k, v);
+        }
     }
 
-    fn extend_one(&mut self, item: (K, V)) {
-        self.0.extend_one(item);
+    fn extend_one(&mut self, (k, v): (K, V)) {
+        self.insert(k, v);
     }
 
     fn extend_reserve(&mut self, additional: usize) {