+ case EXPR_UNKNOWN:
+ case EXPR_INVALID:
+ panic("unexpected expression kind");
+
+ case EXPR_COMPOUND_LITERAL:
+ /* TODO... */
+ break;
+
+ case EXPR_CONDITIONAL:
+ count += count_decls_in_expression(expression->conditional.condition);
+ count += count_decls_in_expression(expression->conditional.true_expression);
+ count += count_decls_in_expression(expression->conditional.false_expression);
+ return count;
+
+ case EXPR_BUILTIN_PREFETCH:
+ count += count_decls_in_expression(expression->builtin_prefetch.adr);
+ count += count_decls_in_expression(expression->builtin_prefetch.rw);
+ count += count_decls_in_expression(expression->builtin_prefetch.locality);
+ return count;
+
+ case EXPR_BUILTIN_CONSTANT_P:
+ count += count_decls_in_expression(expression->builtin_constant.value);
+ return count;
+
+ case EXPR_SELECT:
+ count += count_decls_in_expression(expression->select.compound);
+ return count;
+
+ case EXPR_ARRAY_ACCESS:
+ count += count_decls_in_expression(expression->array_access.array_ref);
+ count += count_decls_in_expression(expression->array_access.index);
+ return count;
+
+ case EXPR_CLASSIFY_TYPE:
+ count += count_decls_in_expression(expression->classify_type.type_expression);
+ return count;
+
+ case EXPR_SIZEOF:
+ case EXPR_ALIGNOF: {
+ expression_t *tp_expression = expression->typeprop.tp_expression;
+ if (tp_expression != NULL) {
+ count += count_decls_in_expression(tp_expression);
+ }
+ return count;
+ }
+
+ case EXPR_OFFSETOF:
+ case EXPR_REFERENCE:
+ case EXPR_CONST:
+ case EXPR_CHARACTER_CONSTANT:
+ case EXPR_WIDE_CHARACTER_CONSTANT:
+ case EXPR_STRING_LITERAL:
+ case EXPR_WIDE_STRING_LITERAL:
+ case EXPR_FUNCTION:
+ case EXPR_PRETTY_FUNCTION:
+ case EXPR_FUNCSIG:
+ case EXPR_FUNCDNAME:
+ case EXPR_BUILTIN_SYMBOL:
+ case EXPR_VA_START:
+ case EXPR_VA_ARG: