1 files changed, 3 insertions, 1 deletions
diff --git a/libcxx/test/std/re/re.alg/re.alg.match/grep.pass.cpp b/libcxx/test/std/re/re.alg/re.alg.match/grep.pass.cpp
index 0c68dca6983..0f75d618c0c 100644
--- a/libcxx/test/std/re/re.alg/re.alg.match/grep.pass.cpp
+++ b/libcxx/test/std/re/re.alg/re.alg.match/grep.pass.cpp
@@ -21,7 +21,7 @@
 #include "test_macros.h"
 #include "test_iterators.h"
 
-int main()
+int main(int, char**)
 {
     {
         std::cmatch m;
@@ -46,4 +46,6 @@ int main()
                 std::regex_constants::grep)));
         assert(m.size() == 0);
     }
+
+  return 0;
 }