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Reintroduce mrb_static_assert; #5051

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Note that the home brew version of `mrb_static_assert` only works within
the function body.  This reverts commit 8f99689.
This commit is contained in:
Yukihiro "Matz" Matsumoto
2020-08-08 10:39:26 +09:00
parent d8e060d2d3
commit c849b894ed
3 changed files with 15 additions and 3 deletions
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include/mruby.h
+9 -3
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@@ -62,11 +62,17 @@
#define mrb_assert_int_fit(t1,n,t2,max) ((void)0)
#endif
#if defined __STDC_VERSION__ && __STDC_VERSION__ >= 201112L
#define mrb_static_assert(exp, str) _Static_assert(exp, str)
#if (defined __STDC_VERSION__ && __STDC_VERSION__ >= 201112L) || \
(defined __cplusplus && __cplusplus >= 201103L)
# include <assert.h>
# define mrb_static_assert(exp, str) static_assert(exp, str)
#else
#define mrb_static_assert(exp, str)
/* C version of static_assert() */
# define mrb_static_assert(cond, str) \
do { int assertion_failed[(cond) ? 1 : -1];\
(void) assertion_failed; } while(0)
#endif
#define mrb_static_assert1(exp) mrb_static_assert(exp, #exp)
#include "mrbconf.h"