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* pack.c (pack_pack): use union to avoid pointer cast.

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(pack_unpack): ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26782 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2010-02-28 06:08:50 +00:00
parent 48e861ddfb
commit 58e8688f69
2 changed files with 92 additions and 54 deletions
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5
ChangeLog
View file

@ -1,3 +1,8 @@
Sun Feb 28 15:07:28 2010 Tanaka Akira <akr@fsij.org>
* pack.c (pack_pack): use union to avoid pointer cast.
(pack_unpack): ditto.
Sun Feb 28 11:49:35 2010 NARUSE, Yui <naruse@ruby-lang.org>
* openssl/ossl.c (OSSL_IMPL_SK2ARY): for OpenSSL 1.0.

141
pack.c
View file

@ -720,12 +720,15 @@ pack_pack(VALUE ary, VALUE fmt)
#if defined(HAVE_INT16_T) && !defined(FORCE_BIG_PACK)
case SIZEOF_INT16_T:
while (len-- > 0) {
int16_t v;
union {
int16_t i;
char a[sizeof(int16_t)];
} v;
from = NEXTFROM;
v = (int16_t)num2i32(from);
if (bigendian_p != BIGENDIAN_P()) v = swap16(v);
rb_str_buf_cat(res, (char *)&v, sizeof(int16_t));
v.i = (int16_t)num2i32(from);
if (bigendian_p != BIGENDIAN_P()) v.i = swap16(v.i);
rb_str_buf_cat(res, v.a, sizeof(int16_t));
}
break;
#endif
@ -733,12 +736,15 @@ pack_pack(VALUE ary, VALUE fmt)
#if defined(HAVE_INT32_T) && !defined(FORCE_BIG_PACK)
case SIZEOF_INT32_T:
while (len-- > 0) {
int32_t v;
union {
int32_t i;
char a[sizeof(int32_t)];
} v;
from = NEXTFROM;
v = (int32_t)num2i32(from);
if (bigendian_p != BIGENDIAN_P()) v = swap32(v);
rb_str_buf_cat(res, (char *)&v, sizeof(int32_t));
v.i = (int32_t)num2i32(from);
if (bigendian_p != BIGENDIAN_P()) v.i = swap32(v.i);
rb_str_buf_cat(res, v.a, sizeof(int32_t));
}
break;
#endif
@ -746,12 +752,15 @@ pack_pack(VALUE ary, VALUE fmt)
#if defined(HAVE_INT64_T) && SIZEOF_LONG == SIZEOF_INT64_T && !defined(FORCE_BIG_PACK)
case SIZEOF_INT64_T:
while (len-- > 0) {
int64_t v;
union {
int64_t i;
char a[sizeof(int64_t)];
} v;
from = NEXTFROM;
v = num2i32(from); /* can return 64bit value if SIZEOF_LONG == SIZEOF_INT64_T */
if (bigendian_p != BIGENDIAN_P()) v = swap64(v);
rb_str_buf_cat(res, (char *)&v, sizeof(int64_t));
v.i = num2i32(from); /* can return 64bit value if SIZEOF_LONG == SIZEOF_INT64_T */
if (bigendian_p != BIGENDIAN_P()) v.i = swap64(v.i);
rb_str_buf_cat(res, v.a, sizeof(int64_t));
}
break;
#else
@ -762,27 +771,30 @@ pack_pack(VALUE ary, VALUE fmt)
if (integer_size > MAX_INTEGER_PACK_SIZE)
rb_bug("unexpected intger size for pack: %d", integer_size);
while (len-- > 0) {
unsigned long tmp[(MAX_INTEGER_PACK_SIZE+SIZEOF_LONG-1)/SIZEOF_LONG];
union {
unsigned long i[(MAX_INTEGER_PACK_SIZE+SIZEOF_LONG-1)/SIZEOF_LONG];
char a[(MAX_INTEGER_PACK_SIZE+SIZEOF_LONG-1)/SIZEOF_LONG*SIZEOF_LONG];
} v;
int num_longs = (integer_size+SIZEOF_LONG-1)/SIZEOF_LONG;
int i;
from = NEXTFROM;
rb_big_pack(from, tmp, num_longs);
rb_big_pack(from, v.i, num_longs);
if (bigendian_p) {
for (i = 0; i < num_longs/2; i++) {
unsigned long t = tmp[i];
tmp[i] = tmp[num_longs-1-i];
tmp[num_longs-1-i] = t;
unsigned long t = v.i[i];
v.i[i] = v.i[num_longs-1-i];
v.i[num_longs-1-i] = t;
}
}
if (bigendian_p != BIGENDIAN_P()) {
for (i = 0; i < num_longs; i++)
tmp[i] = swapl(tmp[i]);
v.i[i] = swapl(v.i[i]);
}
rb_str_buf_cat(res,
bigendian_p ?
(char*)tmp + sizeof(long)*num_longs - integer_size :
(char*)tmp,
v.a + sizeof(long)*num_longs - integer_size :
v.a,
integer_size);
}
break;
@ -1581,22 +1593,28 @@ pack_unpack(VALUE str, VALUE fmt)
if (signed_p) {
PACK_LENGTH_ADJUST_SIZE(sizeof(int16_t));
while (len-- > 0) {
int16_t tmp;
memcpy(&tmp, s, sizeof(int16_t));
if (bigendian_p != BIGENDIAN_P()) tmp = swap16(tmp);
union {
int16_t i;
char a[sizeof(int16_t)];
} v;
memcpy(v.a, s, sizeof(int16_t));
if (bigendian_p != BIGENDIAN_P()) v.i = swap16(v.i);
s += sizeof(int16_t);
UNPACK_PUSH(INT2FIX(tmp));
UNPACK_PUSH(INT2FIX(v.i));
}
PACK_ITEM_ADJUST();
}
else {
PACK_LENGTH_ADJUST_SIZE(sizeof(uint16_t));
while (len-- > 0) {
uint16_t tmp;
memcpy(&tmp, s, sizeof(uint16_t));
if (bigendian_p != BIGENDIAN_P()) tmp = swap16(tmp);
union {
uint16_t i;
char a[sizeof(uint16_t)];
} v;
memcpy(v.a, s, sizeof(uint16_t));
if (bigendian_p != BIGENDIAN_P()) v.i = swap16(v.i);
s += sizeof(uint16_t);
UNPACK_PUSH(INT2FIX(tmp));
UNPACK_PUSH(INT2FIX(v.i));
}
PACK_ITEM_ADJUST();
}
@ -1608,22 +1626,28 @@ pack_unpack(VALUE str, VALUE fmt)
if (signed_p) {
PACK_LENGTH_ADJUST_SIZE(sizeof(int32_t));
while (len-- > 0) {
int32_t tmp;
memcpy(&tmp, s, sizeof(int32_t));
if (bigendian_p != BIGENDIAN_P()) tmp = swap32(tmp);
union {
int32_t i;
char a[sizeof(int32_t)];
} v;
memcpy(v.a, s, sizeof(int32_t));
if (bigendian_p != BIGENDIAN_P()) v.i = swap32(v.i);
s += sizeof(int32_t);
UNPACK_PUSH(INT2NUM(tmp));
UNPACK_PUSH(INT2NUM(v.i));
}
PACK_ITEM_ADJUST();
}
else {
PACK_LENGTH_ADJUST_SIZE(sizeof(uint32_t));
while (len-- > 0) {
uint32_t tmp;
memcpy(&tmp, s, sizeof(uint32_t));
if (bigendian_p != BIGENDIAN_P()) tmp = swap32(tmp);
union {
uint32_t i;
char a[sizeof(uint32_t)];
} v;
memcpy(v.a, s, sizeof(uint32_t));
if (bigendian_p != BIGENDIAN_P()) v.i = swap32(v.i);
s += sizeof(uint32_t);
UNPACK_PUSH(UINT2NUM(tmp));
UNPACK_PUSH(UINT2NUM(v.i));
}
PACK_ITEM_ADJUST();
}
@ -1635,22 +1659,28 @@ pack_unpack(VALUE str, VALUE fmt)
if (signed_p) {
PACK_LENGTH_ADJUST_SIZE(sizeof(int64_t));
while (len-- > 0) {
int64_t tmp;
memcpy(&tmp, s, sizeof(int64_t));
if (bigendian_p != BIGENDIAN_P()) tmp = swap64(tmp);
union {
int64_t i;
char a[sizeof(int64_t)];
} v;
memcpy(v.a, s, sizeof(int64_t));
if (bigendian_p != BIGENDIAN_P()) v.i = swap64(v.i);
s += sizeof(int64_t);
UNPACK_PUSH(INT64toNUM(tmp));
UNPACK_PUSH(INT64toNUM(v.i));
}
PACK_ITEM_ADJUST();
}
else {
PACK_LENGTH_ADJUST_SIZE(sizeof(uint64_t));
while (len-- > 0) {
uint64_t tmp;
memcpy(&tmp, s, sizeof(uint64_t));
if (bigendian_p != BIGENDIAN_P()) tmp = swap64(tmp);
union {
uint64_t i;
char a[sizeof(uint64_t)];
} v;
memcpy(v.a, s, sizeof(uint64_t));
if (bigendian_p != BIGENDIAN_P()) v.i = swap64(v.i);
s += sizeof(uint64_t);
UNPACK_PUSH(UINT64toNUM(tmp));
UNPACK_PUSH(UINT64toNUM(v.i));
}
PACK_ITEM_ADJUST();
}
@ -1662,31 +1692,34 @@ pack_unpack(VALUE str, VALUE fmt)
rb_bug("unexpected intger size for pack: %d", integer_size);
PACK_LENGTH_ADJUST_SIZE(integer_size);
while (len-- > 0) {
unsigned long tmp[(MAX_INTEGER_PACK_SIZE+SIZEOF_LONG)/SIZEOF_LONG];
union {
unsigned long i[(MAX_INTEGER_PACK_SIZE+SIZEOF_LONG)/SIZEOF_LONG];
char a[(MAX_INTEGER_PACK_SIZE+SIZEOF_LONG)/SIZEOF_LONG*SIZEOF_LONG];
} v;
int num_longs = (integer_size+SIZEOF_LONG)/SIZEOF_LONG;
int i;
if (signed_p && (signed char)s[bigendian_p ? 0 : (integer_size-1)] < 0)
memset(tmp, 0xff, sizeof(long)*num_longs);
memset(v.a, 0xff, sizeof(long)*num_longs);
else
memset(tmp, 0, sizeof(long)*num_longs);
memset(v.a, 0, sizeof(long)*num_longs);
if (bigendian_p)
memcpy((char*)(tmp + num_longs) - integer_size, s, integer_size);
memcpy(v.a + sizeof(long)*num_longs - integer_size, s, integer_size);
else
memcpy(tmp, s, integer_size);
memcpy(v.a, s, integer_size);
if (bigendian_p) {
for (i = 0; i < num_longs/2; i++) {
unsigned long t = tmp[i];
tmp[i] = tmp[num_longs-1-i];
tmp[num_longs-1-i] = t;
unsigned long t = v.i[i];
v.i[i] = v.i[num_longs-1-i];
v.i[num_longs-1-i] = t;
}
}
if (bigendian_p != BIGENDIAN_P()) {
for (i = 0; i < num_longs; i++)
tmp[i] = swapl(tmp[i]);
v.i[i] = swapl(v.i[i]);
}
s += integer_size;
UNPACK_PUSH(rb_big_unpack(tmp, num_longs));
UNPACK_PUSH(rb_big_unpack(v.i, num_longs));
}
PACK_ITEM_ADJUST();
break;