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do not use the corrupt my_snprintf(%ll[du]) on win32

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This commit is contained in:
Kazuho Oku 2010-10-18 19:22:28 +09:00
parent ad85533975
commit 3e164eab26
1 changed files with 34 additions and 0 deletions
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34
perl/xs-src/unpack.c
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@ -121,12 +121,41 @@ STATIC_INLINE int template_callback_IV(unpack_user* u PERL_UNUSED_DECL, IV const
return 0; return 0;
} }
static const char* str_from_uint64(char* buf_end, uint64_t v)
{
char *p = buf_end;
*--p = '\0';
if (v == 0) {
*--p = '0';
} else {
do {
*--p = '0' + v % 10;
v /= 10;
} while (v != 0);
}
return p;
}
static const char* str_from_int64(char* buf_end, int64_t v)
{
int minus = v < 0;
char* p = str_from_uint64(buf_end, minus ? -v : v);
if (minus)
*--p = '-';
return p;
}
static int template_callback_uint64(unpack_user* u PERL_UNUSED_DECL, uint64_t const d, SV** o) static int template_callback_uint64(unpack_user* u PERL_UNUSED_DECL, uint64_t const d, SV** o)
{ {
dTHX; dTHX;
char tbuf[64]; char tbuf[64];
#if 1 /* workaround for win32-32bit (my_snprintf(%%d) returns are incorrect) */
char* s = str_from_uint64(tbuf + sizeof(tbuf), d);
*o = newSVpvn(s, tbuf + sizeof(tbuf) - 1 - s);
#else
STRLEN const len = my_snprintf(tbuf, sizeof(tbuf), "%llu", d); STRLEN const len = my_snprintf(tbuf, sizeof(tbuf), "%llu", d);
*o = newSVpvn(tbuf, len); *o = newSVpvn(tbuf, len);
#endif
return 0; return 0;
} }
@ -134,8 +163,13 @@ static int template_callback_int64(unpack_user* u PERL_UNUSED_DECL, int64_t cons
{ {
dTHX; dTHX;
char tbuf[64]; char tbuf[64];
#if 1 /* workaround for win32-32bit (my_snprintf(%%d) returns are incorrect) */
char* s = str_from_int64(tbuf + sizeof(tbuf), d);
*o = newSVpvn(s, tbuf + sizeof(tbuf) - 1 - s);
#else
STRLEN const len = my_snprintf(tbuf, sizeof(tbuf), "%lld", d); STRLEN const len = my_snprintf(tbuf, sizeof(tbuf), "%lld", d);
*o = newSVpvn(tbuf, len); *o = newSVpvn(tbuf, len);
#endif
return 0; return 0;
} }