[gdb/symtab] Assert that per-cu symtab expansion state is defined

diff --git a/gdb/psymtab.c b/gdb/psymtab.c
index 3e0f7e721b76ad8683ec085c6be4f79b94ade00a..6e55d0fdb8f5f8dd7ef82838563c69a7a2e119c3 100644 (file)
--- a/gdb/psymtab.c
+++ b/gdb/psymtab.c
@@ -588,6 +588,8 @@ psymtab_to_symtab (struct objfile *objfile, struct partial_symtab *pst)
   while (pst->user != NULL)
     pst = pst->user;
 
+  gdb_assert (pst->expansion_state != partial_symtab::unexpanded);
+
   /* If it's been looked up before, return it.  */
   if (pst->get_compunit_symtab (objfile))
     return pst->get_compunit_symtab (objfile);