From: Jakub Jelinek <jakub@redhat.com>
Date: Thu, 7 Jul 2016 21:45:11 +0000 (+0200)
Subject: backport: re PR c++/69797 (ICE on invalid code on x86_64-linux-gnu in operator[]... 
X-Git-Tag: releases/gcc-4.9.4~96
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e187e8d76c85df998d38a09d597b6449c6e03c3a;p=thirdparty%2Fgcc.git

backport: re PR c++/69797 (ICE on invalid code on x86_64-linux-gnu in operator[], at vec.h:714)

	Backported from mainline
	2016-02-15  Jakub Jelinek  <jakub@redhat.com>

	PR c++/69797
	* c-common.c (sync_resolve_size): Diagnose too few arguments
	even when params is non-NULL empty vector.

	* c-c++-common/pr69797.c: New test.

From-SVN: r238134
---

diff --git a/gcc/c-family/ChangeLog b/gcc/c-family/ChangeLog
index 41056ad27391..da01be136e99 100644
--- a/gcc/c-family/ChangeLog
+++ b/gcc/c-family/ChangeLog
@@ -1,3 +1,12 @@
+2016-07-07  Jakub Jelinek  <jakub@redhat.com>
+
+	Backported from mainline
+	2016-02-15  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/69797
+	* c-common.c (sync_resolve_size): Diagnose too few arguments
+	even when params is non-NULL empty vector.
+
 2016-07-05  Markus Trippelsdorf  <markus@trippelsdorf.de>
 
 	PR c++/71214
diff --git a/gcc/c-family/c-common.c b/gcc/c-family/c-common.c
index 885670185027..30dac625135f 100644
--- a/gcc/c-family/c-common.c
+++ b/gcc/c-family/c-common.c
@@ -10203,7 +10203,7 @@ sync_resolve_size (tree function, vec<tree, va_gc> *params)
   tree type;
   int size;
 
-  if (!params)
+  if (vec_safe_is_empty (params))
     {
       error ("too few arguments to function %qE", function);
       return 0;
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 959722107a30..fb63d67ac83d 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,6 +1,11 @@
 2016-07-07  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from mainline
+	2016-02-15  Jakub Jelinek  <jakub@redhat.com>
+
+	PR c++/69797
+	* c-c++-common/pr69797.c: New test.
+
 	2016-03-02  Jakub Jelinek  <jakub@redhat.com>
 
 	PR middle-end/70022
diff --git a/gcc/testsuite/c-c++-common/pr69797.c b/gcc/testsuite/c-c++-common/pr69797.c
new file mode 100644
index 000000000000..fe2d4304c34d
--- /dev/null
+++ b/gcc/testsuite/c-c++-common/pr69797.c
@@ -0,0 +1,8 @@
+/* PR c++/69797 */
+/* { dg-do compile } */
+
+void
+foo () 
+{
+  __atomic_fetch_add ();	/* { dg-error "too few arguments to function" } */
+}