commit c25738941b9d32a9653bca90a896407667685d91
Author: Jason Merrill <jason@redhat.com>
Date: Thu Mar 26 13:11:13 2015 -0400
PR c++/65525
* constexpr.c (potential_constant_expression_1): Handle MEM_REF.
@@ -4395,6 +4395,7 @@ potential_constant_expression_1 (tree t, bool want_rval, bool strict,
case ARRAY_RANGE_REF:
case MEMBER_REF:
case DOTSTAR_EXPR:
+ case MEM_REF:
binary:
for (i = 0; i < 2; ++i)
if (!RECUR (TREE_OPERAND (t, i), want_rval))
new file mode 100644
@@ -0,0 +1,22 @@
+// PR c++/65525
+
+struct A
+{
+ int x;
+ char y; // Actually, short and bool (types smaller than int?) trigger this ICE too
+ // Also: the problem doesn't occur if you put the smaller type first, e.g. "char x; int y;"
+
+ A(int x) {} // custom ctor needed for ICE
+};
+
+int main()
+{
+ A a(0), x(1), y(2);
+
+ x = a; // OK
+ y = a; // OK
+ x = y = a; // ICE: sorry, unimplemented: unexpected AST of kind mem_ref
+ // internal compiler error: in potential_constant_expression_1, at cp/constexpr.c:4432
+
+ return 0;
+}