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Interim fix for ocaml_string/const issues #646

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Apr 30, 2020
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Interim fix for ocaml_string/const issues #646

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6 changes: 5 additions & 1 deletion src/ctypes/ctypes_cstubs_internals.h
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Original file line number Diff line number Diff line change
Expand Up @@ -16,8 +16,12 @@
#include "ctypes_raw_pointer.h"
#include "ctypes_managed_buffer_stubs.h"
#include <caml/threads.h>
/* The cast here removes the 'const' qualifier in recent
versions of OCaml because ctypes doesn't yet support const.

TODO: when ctypes supports cv-qualifiers, remove the cast. */
#define CTYPES_PTR_OF_OCAML_STRING(s) \
(String_val(Field(s, 1)) + Long_val(Field(s, 0)))
((char *)String_val(Field(s, 1)) + Long_val(Field(s, 0)))

#ifdef Bytes_val
#define CTYPES_PTR_OF_OCAML_BYTES(s) \
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