1 files changed, 14 insertions, 0 deletions

diff --git a/tests/test_FD_CLR_negative.c b/tests/test_FD_CLR_negative.c
new file mode 100644
index 0000000..43b5e42
--- /dev/null
+++ b/tests/test_FD_CLR_negative.c
@@ -0,0 +1,14 @@
+#include "common.h"
+
+#include <sys/select.h>
+
+int main(int argc, char** argv) {
+  fd_set rfds;
+
+  CHK_FAIL_START
+  FD_CLR(-1, &rfds);
+  CHK_FAIL_END
+
+  puts((const char*)&rfds);
+  return ret;
+}