Add size_t ssize_t and socklen_t

int.h

@@ -23,15 +23,17 @@ typedef uint64_t uintptr_t;
 #elif __WORDSIZE == 32
 typedef int32_t  intptr_t;
 typedef uint32_t uintptr_t;
+#else
+#error Unsupported or unknown wordsize
 #endif
 
+typedef intptr_t ssize_t;
+typedef uintptr_t size_t;
+
+typedef uint32_t socklen_t;
+typedef uint32_t pid_t;
+
 // Compile time tests in supported compilers
-#ifdef __SIZEOF_CHAR__
-#if __SIZEOF_CHAR__ != 1
-#error __SIZEOF_CHAR__ is not 1
-#endif
-#endif
-
 #ifdef __SIZEOF_SHORT__
 #if __SIZEOF_SHORT__ != 2
 #error __SIZEOF_SHORT__ is not 2
@@ -56,7 +58,10 @@ typedef uint32_t uintptr_t;
 #endif
 #endif
 
-// TODO:
-// size_t, ssize_t, socklen_t
-// #ifdef __SIZEOF_SIZE_T__
+#ifdef __SIZEOF_SIZE_T__
+#if __SIZEOF_SIZE_T__ != (__WORDSIZE / 8)
+#error __SIZEOF_SIZE_T__ is not (__WORDSIZE / 8)
+#endif
+#endif
+
 #endif // !MINIMALINT_H