Genconfig DUK_LOSE_CONST (unused initially)

config/genconfig.py

@@ -1058,6 +1058,8 @@ def generate_autodetect_duk_config_header(opts, meta_dir):
 	ret.empty()
 	ret.snippet_relative('unreferenced.h.in')
 	ret.empty()
+	ret.snippet_relative('loseconst.h.in')
+	ret.empty()
 	ret.snippet_relative('noreturn.h.in')
 	ret.empty()
 	ret.snippet_relative('unreachable.h.in')
@@ -1421,6 +1423,8 @@ def generate_autodetect_duk_config_header_modular(opts, meta_dir):
 	ret.empty()
 	ret.snippet_relative('unreferenced.h.in')
 	ret.empty()
+	ret.snippet_relative('loseconst.h.in')
+	ret.empty()
 	ret.snippet_relative('noreturn.h.in')
 	ret.empty()
 	ret.snippet_relative('unreachable.h.in')

config/header-snippets/loseconst.h.in

@@ -0,0 +1,5 @@
+/* Convert any input pointer into a "void *", losing a const qualifier.
+ * This is not fully portable because casting through duk_uintptr_t may
+ * not work on all architectures (e.g. those with long, segmented pointers).
+ */
+#define DUK_LOSE_CONST(src) ((void *) (duk_uintptr_t) (src))