diff options
Diffstat (limited to 'source/luametatex/source/luacore/lua54/src/llimits.h')
| -rw-r--r-- | source/luametatex/source/luacore/lua54/src/llimits.h | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/source/luametatex/source/luacore/lua54/src/llimits.h b/source/luametatex/source/luacore/lua54/src/llimits.h index 52a32f92e..251a27021 100644 --- a/source/luametatex/source/luacore/lua54/src/llimits.h +++ b/source/luametatex/source/luacore/lua54/src/llimits.h @@ -71,11 +71,24 @@ typedef signed char ls_byte; /* -** conversion of pointer to unsigned integer: -** this is for hashing only; there is no problem if the integer -** cannot hold the whole pointer value +** conversion of pointer to unsigned integer: this is for hashing only; +** there is no problem if the integer cannot hold the whole pointer +** value. (In strict ISO C this may cause undefined behavior, but no +** actual machine seems to bother.) */ -#define point2uint(p) ((unsigned int)((size_t)(p) & UINT_MAX)) +#if !defined(LUA_USE_C89) && defined(__STDC_VERSION__) && \ + __STDC_VERSION__ >= 199901L +#include <stdint.h> +#if defined(UINTPTR_MAX) /* even in C99 this type is optional */ +#define L_P2I uintptr_t +#else /* no 'intptr'? */ +#define L_P2I uintmax_t /* use the largerst available integer */ +#endif +#else /* C89 option */ +#define L_P2I size_t +#endif + +#define point2uint(p) ((unsigned int)((L_P2I)(p) & UINT_MAX)) |