+static void
+Panic(char *Reason)
+{
+ /* Oops, something failed!? */
+ fprintf(stderr, "Oops, test for %s failed!?\n", Reason);
+ exit(1);
+} /* Panic */
+
+static void
+Check_snprintf(void)
+{
+ char str[5];
+
+ snprintf(str, sizeof(str), "%s", "1234567890");
+ if (str[4] != '\0')
+ Panic("snprintf NULL byte");
+ if (strlen(str) != 4)
+ Panic("snprintf string length");
+}
+
+static void
+Check_strlcpy(void)
+{
+ char str[5];
+
+ if (strlcpy(str, "1234567890", sizeof(str)) != 10)
+ Panic("strlcpy return code");
+ if (str[4] != '\0')
+ Panic("strlcpy NULL byte");
+ if (strlen(str) != 4)
+ Panic("strlcpy string length");
+}
+
+static void
+Check_strlcat(void)
+{
+ char str[5];
+
+ if (strlcpy(str, "12", sizeof(str)) != 2)
+ Panic("strlcpy for strlcat");
+ if (strlcat(str, "1234567890", sizeof(str)) != 12)
+ Panic("strlcat return code");
+ if (str[4] != '\0')
+ Panic("strlcat NULL byte");
+ if (strlen(str) != 4)
+ Panic("strlcat string length");
+}
+
+#ifdef PROTOTYPES
+static void
+Check_vsnprintf(const int Len, const char *Format, ...)
+#else
+static void
+Check_vsnprintf(Len, Format, va_alist)
+const int Len;
+const char *Format;
+va_dcl
+#endif
+{
+ char str[5];
+ va_list ap;
+
+#ifdef PROTOTYPES
+ va_start(ap, Format);
+#else
+ va_start(ap);
+#endif
+ if (vsnprintf(str, sizeof(str), Format, ap) != Len)
+ Panic("vsnprintf return code");
+ va_end(ap);
+
+ if (str[4] != '\0')
+ Panic("vsnprintf NULL byte");
+ if (strlen(str) != 4)
+ Panic("vsnprintf string length");
+}