[ASTScope] Remove a now-incorrect and not-actually-useful assertion.

This assertion is incorrect now that we have macro expansion buffers, which
don't meet the narrow definition of "inside" from this check.

Author: DougGregor

lib/AST/UnqualifiedLookup.cpp

@@ -100,8 +100,7 @@ namespace {
     ModuleDecl &M;
     const ASTContext &Ctx;
     const SourceLoc Loc;
-    const SourceManager &SM;
-    
+
     /// Used to find the file-local names.
     DebuggerClient *const DebugClient;
 
@@ -152,8 +151,6 @@ namespace {
 
 #pragma mark context-based lookup declarations
 
-    bool isInsideBodyOfFunction(const AbstractFunctionDecl *const AFD) const;
-
     /// For diagnostic purposes, move aside the unavailables, and put
     /// them back as a last-ditch effort.
     /// Could be cleaner someday with a richer interface to UnqualifiedLookup.
@@ -260,7 +257,6 @@ UnqualifiedLookupFactory::UnqualifiedLookupFactory(
   M(*DC->getParentModule()),
   Ctx(M.getASTContext()),
   Loc(Loc),
-  SM(Ctx.SourceMgr),
   DebugClient(M.getDebugClient()),
   options(options),
   isOriginallyTypeLookup(options.contains(Flags::TypeLookup)),
@@ -328,13 +324,6 @@ void UnqualifiedLookupFactory::lookUpTopLevelNamesInModuleScopeContext(
 
 #pragma mark context-based lookup definitions
 
-bool UnqualifiedLookupFactory::isInsideBodyOfFunction(
-    const AbstractFunctionDecl *const AFD) const {
-  auto range = Lexer::getCharSourceRangeFromSourceRange(
-      SM, AFD->getBodySourceRange());
-  return range.contains(Loc);
-}
-
 void UnqualifiedLookupFactory::ResultFinderForTypeContext::findResults(
     const DeclNameRef &Name, NLOptions baseNLOptions,
     const DeclContext *contextForLookup,
@@ -794,12 +783,6 @@ bool ASTScopeDeclGatherer::consume(ArrayRef<ValueDecl *> valuesArg,
 // TODO: in future, migrate this functionality into ASTScopes
 bool ASTScopeDeclConsumerForUnqualifiedLookup::lookInMembers(
     const DeclContext *scopeDC) const {
-  if (candidateSelfDC) {
-    if (auto *afd = dyn_cast<AbstractFunctionDecl>(candidateSelfDC)) {
-      assert(factory.isInsideBodyOfFunction(afd) && "Should be inside");
-    }
-  }
-
   // We're looking for members of a type.
   //
   // If we started the looking from inside a scope where a 'self' parameter

test/Macros/macro_expand.swift

@@ -45,6 +45,13 @@ func testStringify(a: Int, b: Int) {
   _ = (b, b2, s2, s3)
 }
 
+struct Outer {
+  var value: Int = 0
+  func test() {
+    _ = #stringify(1 + value)
+  }
+}
+
 // CHECK: (2, "a + b")
 testStringify(a: 1, b: 1)