[analyzer] Do not crash on callback for call_once passed by value

https://bugs.llvm.org/show_bug.cgi?id=37312
rdar://40270582

Differential Revision: https://reviews.llvm.org/D46913

llvm-svn: 332422

1 files changed, 9 insertions, 0 deletions

diff --git a/clang/test/Analysis/call_once.cpp b/clang/test/Analysis/call_once.cpp
index dd4b2d45516..344de809078 100644
--- a/clang/test/Analysis/call_once.cpp
+++ b/clang/test/Analysis/call_once.cpp
@@ -403,3 +403,12 @@ void callback_with_implicit_cast() {
   std::once_flag flag;
   call_once(flag, callback_taking_func, callback_with_implicit_cast);
 }
+
+std::once_flag another_once_flag;
+typedef void (*my_callback_t)(int *);
+my_callback_t callback;
+int global_int;
+
+void rdar40270582() {
+  call_once(another_once_flag, callback, &global_int);
+}