Merge pull request #77595 from slavapestov/fix-rdar139747886

Sema: Fix request cycle due to unnecessary Sendable check with static method

Author: slavapestov

lib/Sema/CSSimplify.cpp

@@ -10149,6 +10149,9 @@ performMemberLookup(ConstraintKind constraintKind, DeclNameRef memberName,
         if (!isa_and_nonnull<FuncDecl>(decl))
           return false;
 
+        if (!decl->isInstanceMember())
+          return false;
+
         auto hasAppliedSelf = decl->hasCurriedSelf() &&
                               doesMemberRefApplyCurriedSelf(baseObjTy, decl);
         return getNumApplications(decl, hasAppliedSelf, functionRefKind) <

test/Concurrency/sendable_methods.swift

@@ -319,3 +319,16 @@ do {
 
   bar(Test.staticFn) // Ok
 }
+
+// Reference to static method
+do {
+  struct Outer {
+    struct Inner: Sendable {
+      var f: @Sendable () -> Void
+    }
+
+    var g = Inner(f: Outer.ff)
+
+    static func ff() {}
+  }
+}