diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/scanner/AbstractCharArray.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/scanner/AbstractCharArray.java
index 794ffeb72f7..984b63cdb4b 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/scanner/AbstractCharArray.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/scanner/AbstractCharArray.java
@@ -53,4 +53,16 @@ public abstract class AbstractCharArray {
 	 * range checks.
 	 */
 	public abstract void arraycopy(int offset, char[] destination, int destinationPos, int length);
+
+	/**
+	 * This method is slow. Use only for debugging.
+	 */
+	@Override
+	public String toString() {
+		StringBuilder buf = new StringBuilder();
+		for (int pos = 0; isValidOffset(pos); pos++) {
+			buf.append(get(pos));
+		}
+		return buf.toString();
+	}
 }
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/scanner/InternalFileContent.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/scanner/InternalFileContent.java
index 81eeb4ac38e..ccfacf5ece7 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/scanner/InternalFileContent.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/scanner/InternalFileContent.java
@@ -182,4 +182,12 @@ public class InternalFileContent extends FileContent {
 	public void setFoundOnPath(IncludeSearchPathElement isp) {
 		fFoundOnPath= isp;
 	}
+
+	/**
+	 * This method is slow. Use only for debugging.
+	 */
+	@Override
+	public String toString() {
+		return getSource().toString();
+	}
 }