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Fix integer casting on 64 bit platforms.

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On platforms where `sizeof(long)` is 4, casting `(long)` can lose data
or sign information.
This commit is contained in:
Yukihiro "Matz" Matsumoto
2020-09-04 17:20:19 +09:00
parent a127ded486
commit 9b8e5658ce
1 changed files with 2 additions and 2 deletions
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include/mruby/boxing_word.h
+2 -2
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@@ -52,9 +52,9 @@ enum mrb_special_consts {
#define BOXWORD_IMMEDIATE_MASK 0x07
#define BOXWORD_SHIFT_VALUE(o,n,t) \
(t)(((long)(o)) >> BOXWORD_##n##_SHIFT)
(t)(((intptr_t)(o)) >> BOXWORD_##n##_SHIFT)
#define BOXWORD_SET_SHIFT_VALUE(o,n,v) \
((o) = (((unsigned long)(v)) << BOXWORD_##n##_SHIFT) | BOXWORD_##n##_FLAG)
((o) = (((uintptr_t)(v)) << BOXWORD_##n##_SHIFT) | BOXWORD_##n##_FLAG)
#define BOXWORD_SHIFT_VALUE_P(o,n) \
(((o) & BOXWORD_##n##_MASK) == BOXWORD_##n##_FLAG)
#define BOXWORD_OBJ_TYPE_P(o,n) \