1 files changed, 1 insertions, 1 deletions
diff --git a/gdb/top.h b/gdb/top.h
index 2de78bf..c180274 100644
--- a/gdb/top.h
+++ b/gdb/top.h
@@ -68,7 +68,7 @@ extern void gdb_init (char *);
 /* For use by event-top.c */
 /* Variables from top.c. */
 extern int source_line_number;
-extern char *source_file_name;
+extern const char *source_file_name;
 extern int history_expansion_p;
 extern int server_command;
 extern char *lim_at_start;