https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118616
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
This should avoid the warning and not change release checking performance:
```
[apinski@xeond2 gcc]$ git diff tree-vect-generic.cc
diff --git a/gcc/tree-vect-generic.cc b/gcc/tree-vect-generic.cc
index c2f7a29d539..b5a8c1b464f 100644
--- a/gcc/tree-vect-generic.cc
+++ b/gcc/tree-vect-generic.cc
@@ -1761,6 +1761,7 @@ expand_vector_conversion (gimple_stmt_iterator *gsi)
arg))
{
new_rhs = arg;
+ gcc_assert_checking (!converts.is_empty ());
for (unsigned int i = 0; i < converts.length () - 1; i++)
{
new_lhs = make_ssa_name (converts[i].first);
```
