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Shorten %p format for pure 32 bit pointers on x64.

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Mike Pall 2010-01-14 12:08:32 +01:00
parent 767035f031
commit a431d6f35c
1 changed files with 7 additions and 3 deletions
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10
src/lj_str.c
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@ -259,12 +259,16 @@ const char *lj_str_pushvf(lua_State *L, const char *fmt, va_list argp)
#define FMTP_CHARS (2*sizeof(ptrdiff_t)) #define FMTP_CHARS (2*sizeof(ptrdiff_t))
char buff[2+FMTP_CHARS]; char buff[2+FMTP_CHARS];
ptrdiff_t p = (ptrdiff_t)(va_arg(argp, void *)); ptrdiff_t p = (ptrdiff_t)(va_arg(argp, void *));
int i; ptrdiff_t i, lasti = 2+FMTP_CHARS;
#if LJ_64
if ((p >> 32) == 0) /* Shorten output for true 32 bit pointers. */
lasti = 2+2*4;
#endif
buff[0] = '0'; buff[0] = '0';
buff[1] = 'x'; buff[1] = 'x';
for (i = 2+FMTP_CHARS-1; i >= 2; i--, p >>= 4) for (i = lasti-1; i >= 2; i--, p >>= 4)
buff[i] = "0123456789abcdef"[(p & 15)]; buff[i] = "0123456789abcdef"[(p & 15)];
addstr(L, sb, buff, 2+FMTP_CHARS); addstr(L, sb, buff, lasti);
break; break;
} }
case '%': case '%':