+#ifndef GCC_INPUT_H
+#define GCC_INPUT_H
+
+#include "line-map.h"
+extern struct line_maps line_table;
+
+/* The location for declarations in "<built-in>" */
+#define BUILTINS_LOCATION ((source_location) 2)
+
+#ifdef USE_MAPPED_LOCATION
+
+typedef struct
+{
+ /* The name of the source file involved. */
+ const char *file;
+
+ /* The line-location in the source file. */
+ int line;
+
+ int column;
+} expanded_location;
+
+extern expanded_location expand_location (source_location);
+
+#define UNKNOWN_LOCATION ((source_location) 0)
+typedef source_location location_t; /* deprecated typedef */
+typedef source_location source_locus; /* to be removed */
+
+#else /* ! USE_MAPPED_LOCATION */
+
+struct location_s GTY(())
+{
+ /* The name of the source file involved. */
+ const char *file;
+
+ /* The line-location in the source file. */
+ int line;
+};
+
+typedef struct location_s expanded_location;
+typedef struct location_s location_t;
+typedef location_t *source_locus;
+
+#define expand_location(FILELINE) (FILELINE)
+extern location_t unknown_location;
+#define UNKNOWN_LOCATION unknown_location
+
+#endif /* ! USE_MAPPED_LOCATION */
+
+struct file_stack
+{
+ struct file_stack *next;
+ location_t location;
+};