From: Jason Merrill <jason@redhat.com>
Date: Wed, 6 Feb 2013 03:33:55 +0000 (-0500)
Subject: re PR c++/56177 (ICE when used forward for 'auto f();')
X-Git-Tag: releases/gcc-4.8.0~606
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a283c407619b032551995bec2a0732ea094a834c;p=thirdparty%2Fgcc.git

re PR c++/56177 (ICE when used forward for 'auto f();')

	PR c++/56177
	* decl.c (start_preparsed_function): Update restype if we change
	decl1.

From-SVN: r195780
---

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index ce0bfad64f7b..a2bd7017ee14 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,5 +1,9 @@
 2013-02-05  Jason Merrill  <jason@redhat.com>
 
+	PR c++/56177
+	* decl.c (start_preparsed_function): Update restype if we change
+	decl1.
+
 	PR c++/56208
 	* pt.c (fn_type_unification): Discard any access checks from
 	substituting explicit args.
diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
index 9b40018370fd..cfee0f8d37da 100644
--- a/gcc/cp/decl.c
+++ b/gcc/cp/decl.c
@@ -13116,6 +13116,7 @@ start_preparsed_function (tree decl1, tree attrs, int flags)
 	    DECL_CONTEXT (decl1) = DECL_CONTEXT (DECL_TI_TEMPLATE (decl1));
 	}
       fntype = TREE_TYPE (decl1);
+      restype = TREE_TYPE (fntype);
 
       /* If #pragma weak applies, mark the decl appropriately now.
 	 The pragma only applies to global functions.  Because
diff --git a/gcc/testsuite/g++.dg/cpp1y/auto-fn14.C b/gcc/testsuite/g++.dg/cpp1y/auto-fn14.C
new file mode 100644
index 000000000000..e7e86991ed3a
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp1y/auto-fn14.C
@@ -0,0 +1,5 @@
+// PR c++/56177
+// { dg-options "-std=c++1y" }
+
+auto f ();
+auto f () { return 33; }