diff --git a/core/org.eclipse.cdt.core.tests/failures/org/eclipse/cdt/core/parser/failedTests/ASTFailedTests.java b/core/org.eclipse.cdt.core.tests/failures/org/eclipse/cdt/core/parser/failedTests/ASTFailedTests.java
index f7de301fdb9..fb4b3b3e286 100644
--- a/core/org.eclipse.cdt.core.tests/failures/org/eclipse/cdt/core/parser/failedTests/ASTFailedTests.java
+++ b/core/org.eclipse.cdt.core.tests/failures/org/eclipse/cdt/core/parser/failedTests/ASTFailedTests.java
@@ -47,23 +47,7 @@ public class ASTFailedTests extends BaseASTTest
     {
         assertCodeFailsParse("Foo blat() return f(4) {}");
     }
-    public void testBug39681() throws Exception
-    {
-        Writer code = new StringWriter();
-        try
-        {
-            code.write("double\n");
-            code.write("foo (double a, double b)\n");
-            code.write("{\n");
-            code.write("  double square (double z) { return z * z; }\n");
-            code.write("  return square (a) + square (b);\n");
-            code.write("}\n");
-        }
-        catch (IOException ioe)
-        {
-        }
-        parse(code.toString());
-    }
+
     
     public void testBug39682() throws Exception
     {
diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/GCCCompleteParseExtensionsTest.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/GCCCompleteParseExtensionsTest.java
index f60673f0873..035ca604a04 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/GCCCompleteParseExtensionsTest.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/GCCCompleteParseExtensionsTest.java
@@ -83,7 +83,7 @@ public class GCCCompleteParseExtensionsTest extends CompleteParseBaseTest {
 
 	public void testPredefinedSymbol_bug69791() throws Exception {
 		Iterator i = 			parse("typedef __builtin_va_list __gnuc_va_list; \n").getDeclarations();//$NON-NLS-1$
-		IASTTypedefDeclaration td = (IASTTypedefDeclaration) i.next();
+		assertTrue( i.next() instanceof IASTTypedefDeclaration );
 		assertFalse(i.hasNext());
 	}
 
@@ -177,4 +177,16 @@ public class GCCCompleteParseExtensionsTest extends CompleteParseBaseTest {
         code.write("double w = __imag__ x; // imaginary part of expression\n"); //$NON-NLS-1$
         parse(code.toString());
     }
+    
+    public void testBug39681() throws Exception
+    {
+        Writer code = new StringWriter();
+        code.write("double\n"); //$NON-NLS-1$
+        code.write("foo (double a, double b)\n"); //$NON-NLS-1$
+        code.write("{\n"); //$NON-NLS-1$
+        code.write("  double square (double z) { return z * z; }\n"); //$NON-NLS-1$
+        code.write("  return square (a) + square (b);\n"); //$NON-NLS-1$
+        code.write("}\n"); //$NON-NLS-1$
+        parse(code.toString());
+    }
 }
diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/GCCQuickParseExtensionsTest.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/GCCQuickParseExtensionsTest.java
index 660383c31be..60768a85fe8 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/GCCQuickParseExtensionsTest.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/GCCQuickParseExtensionsTest.java
@@ -117,4 +117,16 @@ public class GCCQuickParseExtensionsTest extends BaseASTTest {
         code.write("double w = __imag__ x; // imaginary part of expression\n"); //$NON-NLS-1$
         parse(code.toString());
     }
+    
+    public void testBug39681() throws Exception
+    {
+        Writer code = new StringWriter();
+        code.write("double\n"); //$NON-NLS-1$
+        code.write("foo (double a, double b)\n"); //$NON-NLS-1$
+        code.write("{\n"); //$NON-NLS-1$
+        code.write("  double square (double z) { return z * z; }\n"); //$NON-NLS-1$
+        code.write("  return square (a) + square (b);\n"); //$NON-NLS-1$
+        code.write("}\n"); //$NON-NLS-1$
+        parse(code.toString());
+    }
 }