[CodeCompletion] Check visibility in lookup mode when collecting value requirements

Author: AnthonyLatsis

lib/Sema/LookupVisibleDecls.cpp

@@ -434,6 +434,9 @@ static void lookupDeclsFromProtocolsBeingConformedTo(
           continue;
         }
         if (auto *VD = dyn_cast<ValueDecl>(Member)) {
+          if (!isDeclVisibleInLookupMode(VD, LS, FromContext))
+            continue;
+
           if (!VD->isProtocolRequirement())
             continue;
 

test/IDE/complete_value_expr.swift

@@ -200,6 +200,7 @@
 // RUN: %target-swift-ide-test -code-completion -source-filename %s -code-completion-token=IN_DICTIONARY_LITERAL_1 | %FileCheck %s -check-prefix=SIMPLE_OBJECT_DOT
 // RUN: %target-swift-ide-test -code-completion -source-filename %s -code-completion-token=IN_DICTIONARY_LITERAL_2 | %FileCheck %s -check-prefix=SIMPLE_OBJECT_DOT
 // RUN: %target-swift-ide-test -code-completion -source-filename %s -code-completion-token=COMPLETE_CALL_RESULT | %FileCheck %s -check-prefix=COMPLETE_CALL_RESULT
+// RUN: %target-swift-ide-test -code-completion -source-filename %s -code-completion-keywords=false -code-completion-token=BROKEN_CONFORMANCE | %FileCheck %s -check-prefix=BROKEN_CONFORMANCE
 
 // Test code completion of expressions that produce a value.
 
@@ -2185,3 +2186,19 @@ func testWrapSuccess(promise: Int, seal: Resolver<Void>) {
   // COMPLETE_CALL_RESULT: Pattern/CurrModule:                 ({#Void#}, {#Bool#})[#Void#]; name=(Void, Bool)
   // COMPLETE_CALL_RESULT: End completions
 }
+
+protocol BrokenConformanceP {
+  static func staticFunc()
+  func instanceFunc()
+}
+extension BrokenConformanceP {
+  static func staticFuncExtension() {}
+}
+struct BrokenConformanceS: BrokenConformanceP {
+}
+func testBrokenConformance(arg: BrokenConformanceS) {
+  arg.#^BROKEN_CONFORMANCE^#
+  // BROKEN_CONFORMANCE: Begin completions, 1 items
+  // BROKEN_CONFORMANCE: Decl[InstanceMethod]/Super: instanceFunc()[#Void#];
+  // BROKEN_CONFORMANCE: End completions
+}