vendor/libc++/libc++-release_39-r276489

1 files changed, 31 insertions, 0 deletions

diff --git a/test/std/containers/associative/map/PR28469_undefined_behavior_segfault.sh.cpp b/test/std/containers/associative/map/PR28469_undefined_behavior_segfault.sh.cpp
new file mode 100644
index 000000000000..32d34d90d7f8
--- /dev/null
+++ b/test/std/containers/associative/map/PR28469_undefined_behavior_segfault.sh.cpp
@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// RUN: %build -O2
+// RUN: %run
+
+// <map>
+
+// Previously this code caused a segfault when compiled at -O2 due to undefined
+// behavior in __tree. See https://llvm.org/bugs/show_bug.cgi?id=28469
+
+#include <functional>
+#include <map>
+
+void dummy() {}
+
+struct F {
+    std::map<int, std::function<void()> > m;
+    F() { m[42] = &dummy; }
+};
+
+int main() {
+    F f;
+    f = F();
+}