/* The code is compiled with C++ compiler.
C++ always supports 'inline'. */
# define CURL_INLINE inline /* 'inline' keyword supported */
-#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901
+#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
/* C99 (and later) supports 'inline' keyword */
# define CURL_INLINE inline /* 'inline' keyword supported */
#elif defined(__GNUC__) && __GNUC__ >= 3
#ifdef __GNUC__
# if defined(__has_attribute) && defined(__STDC_VERSION__)
-# if __has_attribute(always_inline) && __STDC_VERSION__ >= 199901
+# if __has_attribute(always_inline) && __STDC_VERSION__ >= 199901L
# define CURL_FORCEINLINE CURL_INLINE __attribute__((always_inline))
# endif
# endif