diff --git a/tests/test-mstring.c b/tests/test-mstring.c
index 5178e7d2..fd02b3e5 100644
--- a/tests/test-mstring.c
+++ b/tests/test-mstring.c
@@ -745,10 +745,68 @@ static void test_M_LET(void)
 #endif
   }
 }
+
+static void test_parse_standard_c_type(void)
+{
+  M_LET(s, string_t) {
+#if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L
+    char c = 'C';
+    M_GET_STRING_ARG(s, c, false);
+    assert (string_equal_str_p(s, "C"));
+
+    short S = -2;
+    M_GET_STRING_ARG(s, S, false);
+    assert (string_equal_str_p(s, "-2"));
+
+    int i = 2;
+    M_GET_STRING_ARG(s, i, false);
+    assert (string_equal_str_p(s, "2"));
+  
+    long l  = 1742;
+    M_GET_STRING_ARG(s, l, false);
+    assert (string_equal_str_p(s, "1742"));
+  
+    long long ll  = -1742548676843540;
+    M_GET_STRING_ARG(s, ll, false);
+    assert (string_equal_str_p(s, "-1742548676843540"));
+
+    unsigned short us = 3;
+    M_GET_STRING_ARG(s, us, false);
+    assert (string_equal_str_p(s, "3"));
+
+    unsigned int ui = 2;
+    M_GET_STRING_ARG(s, ui, false);
+    assert (string_equal_str_p(s, "2"));
+
+    unsigned long ul  = 1756;
+    M_GET_STRING_ARG(s, ul, false);
+    assert (string_equal_str_p(s, "1756"));
+  
+    unsigned long long ull  = 1742548676843540;
+    M_GET_STRING_ARG(s, ull, false);
+    assert (string_equal_str_p(s, "1742548676843540"));
+  
+    float f = -0.5;
+    M_GET_STRING_ARG(s, f, false);
+    assert (string_start_with_str_p(s, "-0.5"));
+
+    double d = 2.5;
+    M_GET_STRING_ARG(s, d, false);
+    assert (string_start_with_str_p(s, "2.5"));
+  
+    long double ld = 27.5;
+    M_GET_STRING_ARG(s, ld, false);
+    assert (string_start_with_str_p(s, "27.5"));
+
+#endif
+  }
+}
+
 int main(void)
 {
   test0();
   test_M_LET();
+  test_parse_standard_c_type();
   test_utf8_basic();
   test_utf8_it();
   test_bounded1();