diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/CompleteParseBaseTest.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/CompleteParseBaseTest.java
index 16e644d5b9d..f2f52a2f8f4 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/CompleteParseBaseTest.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/CompleteParseBaseTest.java
@@ -801,8 +801,10 @@ public class CompleteParseBaseTest extends TestCase
     		ParserFactory.createScanner( new CodeReader( code.toCharArray() ), new ScannerInfo(), //$NON-NLS-1$
     			ParserMode.COMPLETE_PARSE, language, callback, new NullLogService(), null ), callback, ParserMode.COMPLETE_PARSE, language, null 	
     		);
-    	if( ! parser.parse() && throwOnError ) throw new ParserException( "FAILURE"); //$NON-NLS-1$
-    	assertTrue( ((CompleteParser)parser).validateCaches());
+    	boolean parseResult = parser.parse();
+		if( ! parseResult && throwOnError ) throw new ParserException( "FAILURE"); //$NON-NLS-1$
+		if( parseResult  )
+			assertTrue( ((CompleteParser)parser).validateCaches());
         return callback.getCompilationUnit();
     }
         
diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/CompleteParseProblemTest.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/CompleteParseProblemTest.java
index 8ec6b548599..1e404a79aaa 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/CompleteParseProblemTest.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/CompleteParseProblemTest.java
@@ -58,8 +58,21 @@ public class CompleteParseProblemTest extends CompleteParseBaseTest {
 		assertEquals( p.getID(), IProblem.SYNTAX_ERROR );
 		assertEquals( p.getSourceStart(), code.indexOf( name )); //$NON-NLS-1$
 		assertEquals( p.getSourceEnd(), code.indexOf( name ) + name.length() ); //$NON-NLS-1$
+	}
+
+	public void testBug68306() throws Exception
+	{
+		StringBuffer buffer = new StringBuffer();
+		buffer.append( "class Foo { int bar( int ); };\n" ); //$NON-NLS-1$
+		buffer.append( "int Foo::bar( int ){}\n" ); //$NON-NLS-1$
+		buffer.append( "int Foo::bar( int ){}  //error\n" ); //$NON-NLS-1$
+		String code = buffer.toString();
+		parse( code, false );
+		assertFalse( callback.problems.isEmpty() );
+		assertEquals( callback.problems.size(), 1 );
+		IProblem p = (IProblem) callback.problems.get( 0 );
+		assertTrue( p.checkCategory( IProblem.SEMANTICS_RELATED ));
 
 	}
 
-
 }
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/Parser.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/Parser.java
index 7a8dff23c0b..df58e350e0c 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/Parser.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/Parser.java
@@ -881,6 +881,8 @@ public abstract class Parser extends ExpressionParser implements IParser
         throws EndOfFileException, BacktrackException
     {
         simpleDeclarationMark = mark();
+        IProblem firstFailure = null;
+        IProblem secondFailure = null;
 		try
         {
             return simpleDeclaration(
@@ -893,6 +895,7 @@ public abstract class Parser extends ExpressionParser implements IParser
         {
         	if( simpleDeclarationMark == null )
         		throwBacktrack( bt );
+        	firstFailure = bt.getProblem();
             // did not work
             backup(simpleDeclarationMark);
             
@@ -906,8 +909,14 @@ public abstract class Parser extends ExpressionParser implements IParser
             catch( BacktrackException bt2 )
             {
             	if( simpleDeclarationMark == null )
-            		throwBacktrack(bt2);
-
+            	{
+            		if( firstFailure != null  && (bt2.getProblem() == null ))
+            			throwBacktrack(firstFailure);
+            		else
+            			throwBacktrack(bt2);
+            	}
+            	
+            	secondFailure = bt2.getProblem();
             	backup( simpleDeclarationMark ); 
 
 				try
@@ -920,7 +929,13 @@ public abstract class Parser extends ExpressionParser implements IParser
 				catch( BacktrackException b3 )
 				{
 					backup( simpleDeclarationMark ); //TODO - necessary?
-					throwBacktrack( b3 );
+					
+					if( firstFailure != null )
+						throwBacktrack( firstFailure );
+					else if( secondFailure != null )
+						throwBacktrack( secondFailure );
+					else
+						throwBacktrack( b3 );
 					return null;
 				}
             }