diff --git a/core/org.eclipse.cdt.core.tests/.project b/core/org.eclipse.cdt.core.tests/.project
index 132ec729ab8..5429058f69c 100644
--- a/core/org.eclipse.cdt.core.tests/.project
+++ b/core/org.eclipse.cdt.core.tests/.project
@@ -3,7 +3,9 @@
 	<name>org.eclipse.cdt.core.tests</name>
 	<comment></comment>
 	<projects>
+		<project>org.apache.xerces</project>
 		<project>org.eclipse.cdt.core</project>
+		<project>org.eclipse.cdt.core.aix</project>
 		<project>org.eclipse.cdt.core.linux</project>
 		<project>org.eclipse.cdt.core.qnx</project>
 		<project>org.eclipse.cdt.core.solaris</project>
@@ -11,6 +13,12 @@
 		<project>org.eclipse.cdt.make.core</project>
 		<project>org.eclipse.cdt.managedbuilder.core</project>
 		<project>org.eclipse.cdt.ui</project>
+		<project>org.eclipse.core.boot</project>
+		<project>org.eclipse.core.resources</project>
+		<project>org.eclipse.core.runtime</project>
+		<project>org.eclipse.swt</project>
+		<project>org.eclipse.ui</project>
+		<project>org.junit</project>
 	</projects>
 	<buildSpec>
 		<buildCommand>
diff --git a/core/org.eclipse.cdt.core.tests/ChangeLog b/core/org.eclipse.cdt.core.tests/ChangeLog
index 9a2fdd622cc..b68b61bab50 100644
--- a/core/org.eclipse.cdt.core.tests/ChangeLog
+++ b/core/org.eclipse.cdt.core.tests/ChangeLog
@@ -1,3 +1,6 @@
+2004-01-29 John Camelon
+	Added ScannerTestCase::testBug50821().  
+
 2003-11-07 John Camelon
 	Moved testBug39554() from ASTFailedTests to QuickParseASTTests.  
 
diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ScannerTestCase.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ScannerTestCase.java
index 64823bc6d92..3b299d25d5f 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ScannerTestCase.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ScannerTestCase.java
@@ -1528,4 +1528,13 @@ public class ScannerTestCase extends BaseScannerTest
 		assertEquals( callback.inclusions.size(), 1 );
 		assertEquals( callback.inclusions.get(0), "stdio.h"); 
     }
+    
+	public void testBug50821() throws Exception
+	{
+	  Callback callback = new Callback( ParserMode.QUICK_PARSE );
+	  initializeScanner( "\'\n\n\n", ParserMode.QUICK_PARSE,  callback );
+	  scanner.nextToken(); 
+	  assertEquals( callback.problems.size(), 1 );
+	}
+
 }
diff --git a/core/org.eclipse.cdt.core/.project b/core/org.eclipse.cdt.core/.project
index 95eceb11fac..ba2680f0072 100644
--- a/core/org.eclipse.cdt.core/.project
+++ b/core/org.eclipse.cdt.core/.project
@@ -3,6 +3,14 @@
 	<name>org.eclipse.cdt.core</name>
 	<comment></comment>
 	<projects>
+		<project>org.apache.xerces</project>
+		<project>org.eclipse.compare</project>
+		<project>org.eclipse.core.boot</project>
+		<project>org.eclipse.core.resources</project>
+		<project>org.eclipse.core.runtime</project>
+		<project>org.eclipse.debug.core</project>
+		<project>org.eclipse.search</project>
+		<project>org.eclipse.team.core</project>
 	</projects>
 	<buildSpec>
 		<buildCommand>
diff --git a/core/org.eclipse.cdt.core/parser/ChangeLog b/core/org.eclipse.cdt.core/parser/ChangeLog
index 77fdac40be7..0a63834dbb0 100644
--- a/core/org.eclipse.cdt.core/parser/ChangeLog
+++ b/core/org.eclipse.cdt.core/parser/ChangeLog
@@ -1,3 +1,6 @@
+2004-01-29 John Camelon
+	Fixed Bug 50821 - Freezes when opening / saving .c file 
+
 2003-11-07 John Camelon
 	Fixed Bug 39554 : _Pragma directive is not supported (ANSI C99) 
 
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/Scanner.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/Scanner.java
index d3a89fcfc06..8bcfd2b4ba8 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/Scanner.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/Scanner.java
@@ -1616,7 +1616,7 @@ public class Scanner implements IScanner {
         	    ( c == NOCHAR ) )
         	{
         		handleProblem( IProblem.SCANNER_BAD_CHARACTER, new Character( (char)c ).toString(),beginOffset, false, true, throwExceptionOnBadCharacterRead );
-        		c = ' ';
+        		c = '\'';
 			}			
 			// exit condition
 			if ( ( c =='\'' ) && ( prev != '\\' || prevPrev == '\\' ) ) break;