diff --git a/mingw-w64-crt/testcases/t_stdint.c b/mingw-w64-crt/testcases/t_stdint.c
new file mode 100644
index 0000000..d883b5a
--- /dev/null
+++ b/mingw-w64-crt/testcases/t_stdint.c
@@ -0,0 +1,15 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+int main()
+{
+ int check_UINT8_C =
+      (-1 < UINT8_C (0)) == (-1 < (uint_least8_t) 0) ? 1 : -1;
+int check_UINT16_C =
+      (-1 < UINT16_C (0)) == (-1 < (uint_least16_t) 0) ? 1 : -1;
+  if (check_UINT8_C == -1 || check_UINT16_C == -1)
+   abort ();
+  return 0;
+}
+