openwrt/toolchain/gcc/patches/9.1.0/975-g++-ICE-with-generic-lambda.patch

From 7a1606168f60622f73a7dd90778e2a148a2c520c Mon Sep 17 00:00:00 2001
From: mpolacek <mpolacek@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Mon, 6 May 2019 17:08:08 +0000
Subject: [PATCH] 	PR c++/90265 - ICE with generic lambda. 	* pt.c
 (tsubst_copy_and_build): Use a dedicated variable for the last 
 element in the vector.

	* g++.dg/cpp1y/lambda-generic-90265.C: New test.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-9-branch@270919 138bc75d-0d04-0410-961f-82ee72b054a4
---
 gcc/cp/ChangeLog                                  | 6 ++++++
 gcc/cp/pt.c                                       | 3 ++-
 gcc/testsuite/ChangeLog                           | 5 +++++
 gcc/testsuite/g++.dg/cpp1y/lambda-generic-90265.C | 4 ++++
 4 files changed, 17 insertions(+), 1 deletion(-)
 create mode 100644 gcc/testsuite/g++.dg/cpp1y/lambda-generic-90265.C

--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,9 @@
+2019-05-06  Marek Polacek  <[email protected]>
+
+	PR c++/90265 - ICE with generic lambda.
+	* pt.c (tsubst_copy_and_build): Use a dedicated variable for the last
+	element in the vector.
+
 2019-05-03  Release Manager
 
 	* GCC 9.1.0 released.
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -18881,7 +18881,8 @@ tsubst_copy_and_build (tree t,
 	    if (thisarg)
 	      {
 		/* Shift the other args over to make room.  */
-		vec_safe_push (call_args, (*call_args)[nargs-1]);
+		tree last = (*call_args)[nargs - 1];
+		vec_safe_push (call_args, last);
 		for (int i = nargs-1; i > 0; --i)
 		  (*call_args)[i] = (*call_args)[i-1];
 		(*call_args)[0] = thisarg;