bug 55163 - Parser spins on for-init-statement

core/org.eclipse.cdt.core.tests/ChangeLog

@@ -1,3 +1,6 @@
+2003-03-16 Andrew Niefer
+	added CompleteParseASTTest.testBug55163
+
 2004-03-12 Sean Evoy
 	Corrected a target definition in the plugin manifest that was flagged 
 	as release when it should have been flagged as test. Also updated the 

core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/CompleteParseASTTest.java

@@ -1476,4 +1476,26 @@ public class CompleteParseASTTest extends CompleteParseBaseTest
 		
 		assertFalse( i.hasNext() ); 
 	}
+	
+	public void testBug55163() throws Exception
+	{
+		Writer writer = new StringWriter();
+		writer.write( "void foo() { \n");
+		writer.write( "   int i, n; \n");
+		writer.write( "   double di; \n");
+		writer.write( "   for( i = n - 1, di = (double)( i + i ); i > 0; i-- ){ } \n");
+		writer.write( "}\n");
+		
+		Iterator iter = parse( writer.toString() ).getDeclarations();
+		
+		IASTFunction foo = (IASTFunction) iter.next();
+		assertFalse( iter.hasNext() );
+		iter = getDeclarations( foo );
+		IASTVariable i = (IASTVariable)iter.next();
+		IASTVariable n = (IASTVariable)iter.next();
+		IASTVariable di = (IASTVariable)iter.next();
+		
+		assertAllReferences( 7, createTaskList( new Task( n ), new Task( i, 5 ), new Task( di ) ) );
+		
+	}
 }

core/org.eclipse.cdt.core/parser/ChangeLog-parser

@@ -1,3 +1,8 @@
+2004-03-17 Andrew Niefer
+	fix bug 55163 
+	- in for-init-statement, try expression-statement before simple-declaration since if it actually is a statement instead of a 
+	declaration, the simple-declaration fails hard and can actually enter an infinite loop.
+
 2004-03-16 Dave Daoust
 	refactor scanner for performance improvements
 	-changes to accountForUndo, now named readFromStream

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

@@ -2822,16 +2822,20 @@ public abstract class Parser extends ExpressionParser implements IParser
      */
     protected void forInitStatement( IASTScope scope ) throws BacktrackException, EndOfFileException
     {
+    	IToken mark = mark();
     	try
     	{
-        	simpleDeclarationStrategyUnion(scope,null, null);
+    		IASTExpression e = expression( scope );
+			e.acceptElement(requestor);
+			
+			consume( IToken.tSEMI );
     	}
     	catch( BacktrackException bt )
     	{
+    		backup( mark );
     		try
     		{
-    			IASTExpression e = expression( scope );
+    			simpleDeclarationStrategyUnion(scope,null, null);
-    			e.acceptElement(requestor);
     		}
     		catch( BacktrackException b )
     		{