From: Nina Dinka Ranns <dinka.ranns@gmail.com>
Date: Wed, 5 Jun 2019 18:11:20 +0000 (-0400)
Subject: PR c++/63149 - wrong auto deduction from braced-init-list
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=9b79d5d3baad087f145d64ae7f132be0aac3b901;p=gcc.git

PR c++/63149 - wrong auto deduction from braced-init-list

2019-06-04  Nina Dinka Ranns  <dinka.ranns@gmail.com>

    gcc/cp/
    * pt.c (listify_autos): Use non cv qualified auto_node in
    std::initializer_list<auto>.

    testsuite/
    * g++.dg/cpp0x/initlist-deduce2.C: New test.

From-SVN: r271968
---

diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index cfbd9fd4c88..d2cf3458253 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -26836,7 +26836,7 @@ listify (tree arg)
 static tree
 listify_autos (tree type, tree auto_node)
 {
-  tree init_auto = listify (auto_node);
+  tree init_auto = listify (strip_top_quals (auto_node));
   tree argvec = make_tree_vec (1);
   TREE_VEC_ELT (argvec, 0) = init_auto;
   if (processing_template_decl)
diff --git a/gcc/testsuite/g++.dg/cpp0x/initlist-deduce2.C b/gcc/testsuite/g++.dg/cpp0x/initlist-deduce2.C
new file mode 100644
index 00000000000..dbf68a40c85
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/initlist-deduce2.C
@@ -0,0 +1,8 @@
+// Test for PR63149
+// { dg-do compile { target c++11 } }
+
+#include <initializer_list>
+
+const auto r = { 1, 2, 3 };
+using X = decltype(r);
+using X = const std::initializer_list<int>;