When tree-transforming an expression sequence, always flag expanded
variadic argument pack expansions as having changed, rather than doing
it for each changed expansion, which leaves out zero-argument packs
with catastrophic consequences.
Fixes PR10260.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134483 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGenCXX/variadic-templates.cpp b/test/CodeGenCXX/variadic-templates.cpp
index 4f3cf1f..90c8370 100644
--- a/test/CodeGenCXX/variadic-templates.cpp
+++ b/test/CodeGenCXX/variadic-templates.cpp
@@ -9,4 +9,15 @@
// CHECK: ret i32 3
template int get_num_types(int, float, double);
+// PR10260 - argument packs that expand to nothing
+namespace test1 {
+ template <class... T> void foo() {
+ int values[sizeof...(T)+1] = { T::value... };
+ // CHECK: define linkonce_odr void @_ZN5test13fooIJEEEvv()
+ // CHECK: alloca [1 x i32], align 4
+ }
+ void test() {
+ foo<>();
+ }
+}