diff --git a/gdb/psymtab.c b/gdb/psymtab.c
index ea690ef..38b0ca3 100644
--- a/gdb/psymtab.c
+++ b/gdb/psymtab.c
@@ -1073,6 +1073,15 @@ read_psymtabs_with_filename (struct objfile *objfile, const char *filename)
 {
   struct partial_symtab *p;
 
+{ int hack_count = 0;
+  ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
+    {
+      if (filename_cmp (filename, p->filename) == 0)
+	hack_count++;
+    }
+if (hack_count > 10) error ("%d hack_count", hack_count);
+}
+
   ALL_OBJFILE_PSYMTABS_REQUIRED (objfile, p)
     {
       if (filename_cmp (filename, p->filename) == 0)