backport: re PR c++/69797 (ICE on invalid code on x86_64-linux-gnu in operator[]...

	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 41056ad27391b6b7f222d8f67ba2549fbee261ae..da01be136e99e768de1b9dbb7b3d879985e69e09 100644 (file)
--- 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 8856701850274bed70a9939e33640d12e015acd4..30dac625135f8fd7e79b676485893220a69021cd 100644 (file)
--- 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 959722107a30715cca7de97b1b1e9f0ef9902f2f..fb63d67ac83dfc85ab901fe38165b3fbff373945 100644 (file)
--- 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 (file)
index 0000000..fe2d430
--- /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" } */
+}