diff options
| author | nagachika <nagachika@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-03-27 16:13:23 +0000 |
|---|---|---|
| committer | nagachika <nagachika@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-03-27 16:13:23 +0000 |
| commit | a7314a73eb8639dd737929351f4801336ec65abf (patch) | |
| tree | 284b4973a96d7731a9771f92e50d65bb932a5671 /pack.c | |
| parent | 8f3cf2cc09f2cf6c474be2c0091be8a8f4de7634 (diff) | |
merge revision(s) 57187,57234: [Backport #13075]
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]
test/ruby/test_pack.rb: fix test case added by r57187
The test case for String#unpack added by r57187 is not properly testing
because the String will be filled after the block invocation.
[ruby-core:78841] [Bug #13075]
Thanks to nagachika for pointing this out:
http://d.hatena.ne.jp/nagachika/20161226/ruby_trunk_changes_57184_57194#r57187
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@58171 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'pack.c')
| -rw-r--r-- | pack.c | 12 |
1 files changed, 8 insertions, 4 deletions
@@ -1291,13 +1291,14 @@ pack_unpack(VALUE str, VALUE fmt) 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; @@ -1311,13 +1312,14 @@ pack_unpack(VALUE str, VALUE fmt) 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; @@ -1331,7 +1333,7 @@ pack_unpack(VALUE str, VALUE fmt) 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) @@ -1340,6 +1342,7 @@ pack_unpack(VALUE str, VALUE fmt) bits = (unsigned char)*s++; *t++ = hexdigits[bits & 15]; } + UNPACK_PUSH(bitstr); } break; @@ -1353,7 +1356,7 @@ pack_unpack(VALUE str, VALUE fmt) 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) @@ -1362,6 +1365,7 @@ pack_unpack(VALUE str, VALUE fmt) bits = (unsigned char)*s++; *t++ = hexdigits[(bits >> 4) & 15]; } + UNPACK_PUSH(bitstr); } break; |