[Bug fortran/93337] [9/10/11 Regression] ICE in gfc_dt_upper_string, at fortran/module.c:441

[anlauf at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93337

anlauf at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |anlauf at gcc dot gnu.org

--- Comment #3 from anlauf at gcc dot gnu.org ---
Seems to be fixed by:

diff --git a/gcc/fortran/class.c b/gcc/fortran/class.c
index 2b760efe8d7..48f81d89a74 100644
--- a/gcc/fortran/class.c
+++ b/gcc/fortran/class.c
@@ -2277,6 +2277,9 @@ gfc_find_derived_vtab (gfc_symbol *derived)
   if (!derived)
     return NULL;

+  if (!derived->name)
+    return NULL;
+
   /* Find the gsymbol for the module of use associated derived types.  */
   if ((derived->attr.use_assoc || derived->attr.used_in_submodule)
        && !derived->attr.vtype && !derived->attr.is_class)