diff options
| author | rhe <rhe@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2016-12-26 06:32:00 +0000 |
|---|---|---|
| committer | rhe <rhe@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2016-12-26 06:32:00 +0000 |
| commit | b65b41861f590ae14ec932e323337923ce12ca18 (patch) | |
| tree | 2431210a9f9abadfcbb12c9638d73145d7e2ee9c /pack.c | |
| parent | 256d8c9ecffbcd8f4fe7562b866fcd55f1d445e7 (diff) | |
| download | ruby-b65b41861f590ae14ec932e323337923ce12ca18.tar.gz | |
pack.c: avoid returning uninitialized String
Fix unpacking with 'b', 'B', 'h' and 'H' format. Do not return an
uninitialized String to Ruby before filling the content bytes.
Fixes r11175 ("pack.c (pack_unpack): execute block if given with
unpacked value instead of creating an array", 2006-10-15).
[ruby-core:78841] [Bug #13075]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@57187 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'pack.c')
| -rw-r--r-- | pack.c | 12 |
1 files changed, 8 insertions, 4 deletions
@@ -1194,13 +1194,14 @@ pack_unpack_internal(VALUE str, VALUE fmt, int mode) if (p[-1] == '*' || len > (send - s) * 8) len = (send - s) * 8; bits = 0; - UNPACK_PUSH(bitstr = rb_usascii_str_new(0, len)); + bitstr = rb_usascii_str_new(0, len); t = RSTRING_PTR(bitstr); for (i=0; i<len; i++) { if (i & 7) bits >>= 1; else bits = (unsigned char)*s++; *t++ = (bits & 1) ? '1' : '0'; } + UNPACK_PUSH(bitstr); } break; @@ -1214,13 +1215,14 @@ pack_unpack_internal(VALUE str, VALUE fmt, int mode) if (p[-1] == '*' || len > (send - s) * 8) len = (send - s) * 8; bits = 0; - UNPACK_PUSH(bitstr = rb_usascii_str_new(0, len)); + bitstr = rb_usascii_str_new(0, len); t = RSTRING_PTR(bitstr); for (i=0; i<len; i++) { if (i & 7) bits <<= 1; else bits = (unsigned char)*s++; *t++ = (bits & 128) ? '1' : '0'; } + UNPACK_PUSH(bitstr); } break; @@ -1234,7 +1236,7 @@ pack_unpack_internal(VALUE str, VALUE fmt, int mode) if (p[-1] == '*' || len > (send - s) * 2) len = (send - s) * 2; bits = 0; - UNPACK_PUSH(bitstr = rb_usascii_str_new(0, len)); + bitstr = rb_usascii_str_new(0, len); t = RSTRING_PTR(bitstr); for (i=0; i<len; i++) { if (i & 1) @@ -1243,6 +1245,7 @@ pack_unpack_internal(VALUE str, VALUE fmt, int mode) bits = (unsigned char)*s++; *t++ = hexdigits[bits & 15]; } + UNPACK_PUSH(bitstr); } break; @@ -1256,7 +1259,7 @@ pack_unpack_internal(VALUE str, VALUE fmt, int mode) if (p[-1] == '*' || len > (send - s) * 2) len = (send - s) * 2; bits = 0; - UNPACK_PUSH(bitstr = rb_usascii_str_new(0, len)); + bitstr = rb_usascii_str_new(0, len); t = RSTRING_PTR(bitstr); for (i=0; i<len; i++) { if (i & 1) @@ -1265,6 +1268,7 @@ pack_unpack_internal(VALUE str, VALUE fmt, int mode) bits = (unsigned char)*s++; *t++ = hexdigits[(bits >> 4) & 15]; } + UNPACK_PUSH(bitstr); } break; |