Workaround submitted for Bug 54040 - [Scalability] UI Responsiveness very sluggish when editing large source files

Parser.translationUnit() rethrows OutOfMemoryError after shielding it from the parser.failParse()/errorHandling().

core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/Parser.java

@@ -220,6 +220,7 @@ public abstract class Parser extends ExpressionParser implements IParser
             catch( OutOfMemoryError oome )
 			{
             	logThrowable( "translationUnit", oome ); //$NON-NLS-1$
+            	throw oome;
 			}
             catch( Exception e )
 			{