Do not dump non-interoperable types with -fc-prototypes.

gcc/fortran/ChangeLog:

	PR fortran/120107
	* dump-parse-tree.cc (write_type): Do not dump non-interoperable
	types.

Author: Thomas Koenig

gcc/fortran/dump-parse-tree.cc

@@ -4415,10 +4415,11 @@ write_type (gfc_symbol *sym)
 {
   gfc_component *c;
 
-  /* Don't dump our iso c module, nor vtypes.  */
+  /* Don't dump types that are not interoperable, our very own ISO C Binding
+     module, or vtypes.  */
 
   if (sym->from_intmod == INTMOD_ISO_C_BINDING || sym->attr.flavor != FL_DERIVED
-      || sym->attr.vtype)
+      || sym->attr.vtype || !sym->attr.is_bind_c)
     return;
 
   fprintf (dumpfile, "typedef struct %s {\n", sym->name);