diff --git a/src/cc65/datatype.c b/src/cc65/datatype.c
index 8240a4e60..9e52027ce 100644
--- a/src/cc65/datatype.c
+++ b/src/cc65/datatype.c
@@ -72,6 +72,12 @@ const Type type_size_t[]    = { TYPE(T_SIZE_T), TYPE(T_END) };
 const Type type_float[]     = { TYPE(T_FLOAT),  TYPE(T_END) };
 const Type type_double[]    = { TYPE(T_DOUBLE), TYPE(T_END) };
 
+/* More predefined type strings */
+const Type type_char_p[]    = { TYPE(T_PTR),    TYPE(T_CHAR),   TYPE(T_END) };
+const Type type_c_char_p[]  = { TYPE(T_PTR),    TYPE(T_C_CHAR), TYPE(T_END) };
+const Type type_void_p[]    = { TYPE(T_PTR),    TYPE(T_VOID),   TYPE(T_END) };
+const Type type_c_void_p[]  = { TYPE(T_PTR),    TYPE(T_C_VOID), TYPE(T_END) };
+
 
 
 /*****************************************************************************/
diff --git a/src/cc65/datatype.h b/src/cc65/datatype.h
index b65cbdd05..1140ee498 100644
--- a/src/cc65/datatype.h
+++ b/src/cc65/datatype.h
@@ -146,6 +146,10 @@ enum {
     T_PTR       = T_TYPE_PTR      | T_CLASS_PTR    | T_SIGN_NONE     | T_SIZE_NONE,
     T_FUNC      = T_TYPE_FUNC     | T_CLASS_FUNC   | T_SIGN_NONE     | T_SIZE_NONE,
 
+    /* More types for convenience */
+    T_C_CHAR    = T_CHAR | T_QUAL_CONST,
+    T_C_VOID    = T_VOID | T_QUAL_CONST,
+
     /* Aliases */
     T_SIZE_T    = T_UINT,
 };
@@ -211,6 +215,12 @@ extern const Type type_size_t[];
 extern const Type type_float[];
 extern const Type type_double[];
 
+/* More predefined type strings */
+extern const Type type_char_p[];
+extern const Type type_c_char_p[];
+extern const Type type_void_p[];
+extern const Type type_c_void_p[];
+
 /* Forward for the SymEntry struct */
 struct SymEntry;
 
diff --git a/src/cc65/stdfunc.c b/src/cc65/stdfunc.c
index 117214a24..bdc7be006 100644
--- a/src/cc65/stdfunc.c
+++ b/src/cc65/stdfunc.c
@@ -212,9 +212,9 @@ static void StdFunc_memcpy (FuncDesc* F attribute ((unused)), ExprDesc* Expr)
 /* Handle the memcpy function */
 {
     /* Argument types: (void*, const void*, size_t) */
-    static const Type Arg1Type[] = { TYPE(T_PTR), TYPE(T_VOID), TYPE(T_END) };
-    static const Type Arg2Type[] = { TYPE(T_PTR), TYPE(T_VOID|T_QUAL_CONST), TYPE(T_END) };
-    static const Type Arg3Type[] = { TYPE(T_SIZE_T), TYPE(T_END) };
+    static const Type* Arg1Type = type_void_p;
+    static const Type* Arg2Type = type_c_void_p;
+    static const Type* Arg3Type = type_size_t;
 
     ArgDesc  Arg1, Arg2, Arg3;
     unsigned ParamSize = 0;
@@ -556,9 +556,9 @@ static void StdFunc_memset (FuncDesc* F attribute ((unused)), ExprDesc* Expr)
 /* Handle the memset function */
 {
     /* Argument types: (void*, int, size_t) */
-    static const Type Arg1Type[] = { TYPE(T_PTR), TYPE(T_VOID), TYPE(T_END) };
-    static const Type Arg2Type[] = { TYPE(T_INT), TYPE(T_END) };
-    static const Type Arg3Type[] = { TYPE(T_SIZE_T), TYPE(T_END) };
+    static const Type* Arg1Type = type_void_p;
+    static const Type* Arg2Type = type_int;
+    static const Type* Arg3Type = type_size_t;
 
     ArgDesc  Arg1, Arg2, Arg3;
     int      MemSet    = 1;             /* Use real memset if true */
@@ -782,8 +782,8 @@ static void StdFunc_strcmp (FuncDesc* F attribute ((unused)), ExprDesc* Expr)
 /* Handle the strcmp function */
 {
     /* Argument types: (const char*, const char*) */
-    static const Type Arg1Type[] = { TYPE(T_PTR), TYPE(T_CHAR|T_QUAL_CONST), TYPE(T_END) };
-    static const Type Arg2Type[] = { TYPE(T_PTR), TYPE(T_CHAR|T_QUAL_CONST), TYPE(T_END) };
+    static const Type* Arg1Type = type_c_char_p;
+    static const Type* Arg2Type = type_c_char_p;
 
     ArgDesc  Arg1, Arg2;
     unsigned ParamSize = 0;
@@ -983,8 +983,8 @@ static void StdFunc_strcpy (FuncDesc* F attribute ((unused)), ExprDesc* Expr)
 /* Handle the strcpy function */
 {
     /* Argument types: (char*, const char*) */
-    static const Type Arg1Type[] = { TYPE(T_PTR), TYPE(T_CHAR), TYPE(T_END) };
-    static const Type Arg2Type[] = { TYPE(T_PTR), TYPE(T_CHAR|T_QUAL_CONST), TYPE(T_END) };
+    static const Type* Arg1Type = type_char_p;
+    static const Type* Arg2Type = type_c_char_p;
 
     ArgDesc  Arg1, Arg2;
     unsigned ParamSize = 0;
@@ -1180,7 +1180,7 @@ ExitPoint:
 static void StdFunc_strlen (FuncDesc* F attribute ((unused)), ExprDesc* Expr)
 /* Handle the strlen function */
 {
-    static const Type ArgType[] = { TYPE(T_PTR), TYPE(T_CHAR|T_QUAL_CONST), TYPE(T_END) };
+    static const Type* ArgType = type_c_char_p;
     ExprDesc    Arg;
     int         IsArray;
     int         IsPtr;