diff --git a/include/parrot/api.h b/include/parrot/api.h
index c9eaece0b9..28908d03b4 100644
--- a/include/parrot/api.h
+++ b/include/parrot/api.h
@@ -218,13 +218,6 @@ Parrot_Int Parrot_api_set_runcore(
     Parrot_UInt trace)
         __attribute__nonnull__(2);
 
-PARROT_API
-Parrot_Int Parrot_api_set_stdhandles(
-    Parrot_PMC interp_pmc,
-    Parrot_Int in,
-    Parrot_Int out,
-    Parrot_Int err);
-
 PARROT_API
 Parrot_Int Parrot_api_set_warnings(Parrot_PMC interp_pmc, Parrot_Int flags);
 
@@ -293,7 +286,6 @@ Parrot_Int Parrot_api_wrap_imcc_hack(
 #define ASSERT_ARGS_Parrot_api_set_output_file __attribute__unused__ int _ASSERT_ARGS_CHECK = (0)
 #define ASSERT_ARGS_Parrot_api_set_runcore __attribute__unused__ int _ASSERT_ARGS_CHECK = (\
        PARROT_ASSERT_ARG(corename))
-#define ASSERT_ARGS_Parrot_api_set_stdhandles __attribute__unused__ int _ASSERT_ARGS_CHECK = (0)
 #define ASSERT_ARGS_Parrot_api_set_warnings __attribute__unused__ int _ASSERT_ARGS_CHECK = (0)
 #define ASSERT_ARGS_Parrot_api_wrap_imcc_hack __attribute__unused__ int _ASSERT_ARGS_CHECK = (\
        PARROT_ASSERT_ARG(sourcefile) \
diff --git a/include/parrot/string_funcs.h b/include/parrot/string_funcs.h
index eefd85fc52..812f7e33c8 100644
--- a/include/parrot/string_funcs.h
+++ b/include/parrot/string_funcs.h
@@ -437,6 +437,9 @@ STRING * Parrot_str_from_int_base(PARROT_INTERP,
         __attribute__nonnull__(2)
         FUNC_MODIFIES(*tc);
 
+STRING * Parrot_str_from_platform_cstring(PARROT_INTERP, char *c)
+        __attribute__nonnull__(1);
+
 PARROT_WARN_UNUSED_RESULT
 PARROT_CANNOT_RETURN_NULL
 STRING* Parrot_str_from_uint(PARROT_INTERP,
@@ -471,6 +474,9 @@ STRING * Parrot_str_iter_substr(PARROT_INTERP,
         __attribute__nonnull__(2)
         __attribute__nonnull__(3);
 
+char * Parrot_str_to_platform_cstring(PARROT_INTERP, STRING *s)
+        __attribute__nonnull__(1);
+
 #define ASSERT_ARGS_Parrot_str_bitwise_and __attribute__unused__ int _ASSERT_ARGS_CHECK = (\
        PARROT_ASSERT_ARG(interp))
 #define ASSERT_ARGS_Parrot_str_bitwise_not __attribute__unused__ int _ASSERT_ARGS_CHECK = (\
@@ -614,6 +620,9 @@ STRING * Parrot_str_iter_substr(PARROT_INTERP,
 #define ASSERT_ARGS_Parrot_str_from_int_base __attribute__unused__ int _ASSERT_ARGS_CHECK = (\
        PARROT_ASSERT_ARG(interp) \
     , PARROT_ASSERT_ARG(tc))
+#define ASSERT_ARGS_Parrot_str_from_platform_cstring \
+     __attribute__unused__ int _ASSERT_ARGS_CHECK = (\
+       PARROT_ASSERT_ARG(interp))
 #define ASSERT_ARGS_Parrot_str_from_uint __attribute__unused__ int _ASSERT_ARGS_CHECK = (\
        PARROT_ASSERT_ARG(interp) \
     , PARROT_ASSERT_ARG(tc))
@@ -627,6 +636,9 @@ STRING * Parrot_str_iter_substr(PARROT_INTERP,
        PARROT_ASSERT_ARG(interp) \
     , PARROT_ASSERT_ARG(str) \
     , PARROT_ASSERT_ARG(l))
+#define ASSERT_ARGS_Parrot_str_to_platform_cstring \
+     __attribute__unused__ int _ASSERT_ARGS_CHECK = (\
+       PARROT_ASSERT_ARG(interp))
 /* Don't modify between HEADERIZER BEGIN / HEADERIZER END.  Your changes will be lost. */
 /* HEADERIZER END: src/string/api.c */