Only call getTypeOfSymbol recursively if it's a value

src/compiler/checker.ts

@@ -2414,7 +2414,10 @@ module ts {
         function getTypeOfAlias(symbol: Symbol): Type {
             let links = getSymbolLinks(symbol);
             if (!links.type) {
-                links.type = getTypeOfSymbol(resolveAlias(symbol));
+                let targetSymbol = resolveAlias(symbol);
+                links.type = targetSymbol.flags & SymbolFlags.Value
+                    ? getTypeOfSymbol(targetSymbol)
+                    : unknownType;
             }
             return links.type;
         }

src/harness/fourslashRunner.ts

@@ -35,9 +35,9 @@ class FourSlashRunner extends RunnerBase {
             this.tests = this.enumerateFiles(this.basePath, /\.ts/i, { recursive: false });
         }
 
-        describe(this.testSuiteName, () => {
             this.tests.forEach((fn: string) => {
-                fn = ts.normalizeSlashes(fn);
+         describe(fn, () => {
+               fn = ts.normalizeSlashes(fn);
                 var justName = fn.replace(/^.*[\\\/]/, '');
 
                 // Convert to relative path

tests/cases/fourslash/aliasMergingWithNamespace.ts

@@ -0,0 +1,9 @@
+///<reference path="fourslash.ts"/>
+
+////namespace bar { }
+////import bar = bar/**/;
+
+goTo.marker();
+verify.quickInfoIs(
+`namespace bar
+import bar = bar`);