3 files changed, 20 insertions, 1 deletions
diff --git a/test/LLVMC/C++/dg.exp b/test/LLVMC/C++/dg.exp
index fc852e30acf8f..209345540c11f 100644
--- a/test/LLVMC/C++/dg.exp
+++ b/test/LLVMC/C++/dg.exp
@@ -1,5 +1,5 @@
 load_lib llvm.exp
 
 if [ llvm_gcc_supports c++ ] then {
-  RunLLVMTests [lsort [glob -nocomplain $srcdir/$subdir/*.{ll,c,cpp}]]
+  RunLLVMTests [lsort [glob -nocomplain $srcdir/$subdir/*.{unk,ll,c,cpp}]]
 }
diff --git a/test/LLVMC/C++/just-compile.cpp b/test/LLVMC/C++/just-compile.cpp
new file mode 100644
index 0000000000000..771c9822da69e
--- /dev/null
+++ b/test/LLVMC/C++/just-compile.cpp
@@ -0,0 +1,10 @@
+// Test that the -c flag works.
+// RUN: llvmc -c %s -o %t.o
+// RUN: llvmc --linker=c++ %t.o -o %t
+// RUN: %abs_tmp | grep hello
+// XFAIL: vg
+#include <iostream>
+
+int main() {
+    std::cout << "hello" << '\n';
+}
diff --git a/test/LLVMC/C++/unknown_suffix.unk b/test/LLVMC/C++/unknown_suffix.unk
new file mode 100644
index 0000000000000..bf4aea2862473
--- /dev/null
+++ b/test/LLVMC/C++/unknown_suffix.unk
@@ -0,0 +1,9 @@
+// Test that the -x option works for files with unknown suffixes.
+// RUN: llvmc -x c++ %s -o %t
+// RUN: %abs_tmp | grep hello
+// XFAIL: vg
+#include <iostream>
+
+int main() {
+    std::cout << "hello" << '\n';
+}