From: Jason Merrill <jason@redhat.com>
Date: Tue, 7 May 2019 22:37:14 +0000 (-0400)
Subject: A non-type template parm with a placeholder type is type-dependent.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=258195f165f69c31c953716ece6e0922b651cd5b;p=gcc.git

A non-type template parm with a placeholder type is type-dependent.

	* pt.c (type_dependent_expression_p): A non-type template parm with
	a placeholder type is type-dependent.

From-SVN: r270984
---

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index e974951dc52..bd0914b8ffa 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,8 @@
+2019-05-07  Jason Merrill  <jason@redhat.com>
+
+	* pt.c (type_dependent_expression_p): A non-type template parm with
+	a placeholder type is type-dependent.
+
 2019-05-06  Marek Polacek  <polacek@redhat.com>
 
 	PR c++/90265 - ICE with generic lambda.
diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index 2f2066e297c..92b67106d63 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -25981,6 +25981,13 @@ type_dependent_expression_p (tree expression)
       return false;
     }
 
+  /* The type of a non-type template parm declared with a placeholder type
+     depends on the corresponding template argument, even though
+     placeholders are not normally considered dependent.  */
+  if (TREE_CODE (expression) == TEMPLATE_PARM_INDEX
+      && is_auto (TREE_TYPE (expression)))
+    return true;
+
   gcc_assert (TREE_CODE (expression) != TYPE_DECL);
 
   /* Dependent type attributes might not have made it from the decl to