Use a string pool to reduce the memory footprint

git-svn-id: svn://svn.cc65.org/cc65/trunk@2197 b7a2c559-68d2-44c3-8de9-860c34a00d81

src/ld65/spool.c

@@ -54,3 +54,15 @@ StringPool StrPool = STATIC_STRINGPOOL_INITIALIZER;
 
 
 
+void InitStrPool (void)
+/* Initialize the string pool */
+{
+    /* We insert a first string here, which will have id zero. This means 
+     * that we can treat index zero later as invalid.
+     */
+    SP_Add (&StrPool, "<invalid message #0>");
+}
+
+
+
+