Array initialization with a non-array is expected to fail

In the past, this failed an internal assertion; nowadays a proper error is
reported to the user. clang -Wall -Werror says:

Struct_Initialization1/main.c:9:38: error: suggest braces around initialization of subobject [-Werror,-Wmissing-braces]
struct _classinfo nullclass1 = { 42, 0, 0 };
                                     ^~~~
                                     {   }
1 error generated.

Author: tautschnig

regression/ansi-c/Struct_Initialization1/test.desc

@@ -1,8 +1,8 @@
-KNOWNBUG
+CORE
 main.c
 
-^EXIT=0$
+^EXIT=(64|1)$
 ^SIGNAL=0$
+^CONVERSION ERROR$
 --
 ^warning: ignoring
-^CONVERSION ERROR$