commit 7500f9612ecc0799c72f61a11a213f969e42b17b
Author: Jason Merrill <jason@redhat.com>
Date: Wed Dec 5 11:32:46 2012 -0500
PR c++/55564
* pt.c (unify) [ARRAY_TYPE]: Unify the element type before the bounds.
@@ -16593,6 +16593,8 @@ unify (tree tparms, tree targs, tree parm, tree arg, int strict,
if ((TYPE_DOMAIN (parm) == NULL_TREE)
!= (TYPE_DOMAIN (arg) == NULL_TREE))
return unify_type_mismatch (explain_p, parm, arg);
+ RECUR_AND_CHECK_FAILURE (tparms, targs, TREE_TYPE (parm), TREE_TYPE (arg),
+ strict & UNIFY_ALLOW_MORE_CV_QUAL, explain_p);
if (TYPE_DOMAIN (parm) != NULL_TREE)
{
tree parm_max;
@@ -16651,8 +16653,7 @@ unify (tree tparms, tree targs, tree parm, tree arg, int strict,
RECUR_AND_CHECK_FAILURE (tparms, targs, parm_max, arg_max,
UNIFY_ALLOW_INTEGER, explain_p);
}
- return unify (tparms, targs, TREE_TYPE (parm), TREE_TYPE (arg),
- strict & UNIFY_ALLOW_MORE_CV_QUAL, explain_p);
+ return unify_success (explain_p);
case REAL_TYPE:
case COMPLEX_TYPE:
new file mode 100644
@@ -0,0 +1,12 @@
+// PR c++/55564
+// { dg-options -std=c++11 }
+
+template <typename T, decltype(sizeof(T)) N>
+auto array_size(T(&)[N]) -> decltype(N) { return N; }
+
+int main() {
+ int simple[4] = {};
+ int result = array_size(simple);
+
+ return result;
+}