-/* Print the file names and line numbers of the #include commands
- which led to the map MAP, if any, to stderr. Nothing is output if
- the most recently listed stack is the same as the current one. */
-extern void linemap_print_containing_files (struct line_maps *,
- const struct line_map *);
+/* source_location values from 0 to RESERVED_LOCATION_COUNT-1 will
+ be reserved for libcpp user as special values, no token from libcpp
+ will contain any of those locations. */
+#define RESERVED_LOCATION_COUNT 2