[CUDA] Add missing #undef __DEVICE__ to CUDA shim header.

llvm-svn: 264742

diff --git a/clang/lib/Headers/__clang_cuda_cmath.h b/clang/lib/Headers/__clang_cuda_cmath.h
index 0d865d2..9fe3f71 100644 (file)
--- a/clang/lib/Headers/__clang_cuda_cmath.h
+++ b/clang/lib/Headers/__clang_cuda_cmath.h
@@ -194,4 +194,6 @@ using ::trunc;
 
 } // namespace std
 
+#undef __DEVICE__
+
 #endif