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From: "bergner at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/106016] [PowerPC] crash with attempt to initialize array
 of MMA accumulators
Date: Fri, 17 Jun 2022 19:30:32 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106016

--- Comment #4 from Peter Bergner <bergner at gcc dot gnu.org> ---
(In reply to Segher Boessenkool from comment #3)
> Yeah.  It should just return 1 like the other scalar types?

So the code did look for OPAQUE_TYPE and expected never to see it, so it wa=
s on
an error path.  I agree with your comment above and I'm guessing we want
something like:

diff --git a/gcc/expr.cc b/gcc/expr.cc
index 78c839ab425..1675198a146 100644
--- a/gcc/expr.cc
+++ b/gcc/expr.cc
@@ -6423,13 +6423,13 @@ count_type_elements (const_tree type, bool for_ctor=
_p)
     case OFFSET_TYPE:
     case REFERENCE_TYPE:
     case NULLPTR_TYPE:
+    case OPAQUE_TYPE:
       return 1;

     case ERROR_MARK:
       return 0;

     case VOID_TYPE:
-    case OPAQUE_TYPE:
     case METHOD_TYPE:
     case FUNCTION_TYPE:
     case LANG_TYPE:=