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* ext/stringio/stringio.c (strio_ungetc): raise IOError instead of RuntimeError

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if the string is frozen.
  [Bug #7231] [ruby-core:48530]

* ext/stringio/stringio.c (strio_ungetbyte): ditto.

* test/stringio/test_stringio.rb: a test for above.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38628 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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glass 2012-12-27 11:43:02 +00:00
parent 90833dd452
commit cd453f16b4
3 changed files with 20 additions and 0 deletions
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10
ChangeLog
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@ -1,3 +1,13 @@
Thu Dec 27 20:11:29 2012 Masaki Matsushita <glass.saga@gmail.com>
* ext/stringio/stringio.c (strio_ungetc): raise IOError instead of RuntimeError
if the string is frozen.
[Bug #7231] [ruby-core:48530]
* ext/stringio/stringio.c (strio_ungetbyte): ditto.
* test/stringio/test_stringio.rb: a test for above.
Wed Dec 26 23:55:18 2012 Keiju Ishitsuka <keiju@ishitsuka.com>
* lib/irb/context.rb: fix IRB::Inspector#keys_with_inspector [Bug #7598]

2
ext/stringio/stringio.c
View file

@ -737,6 +737,7 @@ strio_ungetc(VALUE self, VALUE c)
rb_encoding *enc, *enc2;
if (NIL_P(c)) return Qnil;
check_modifiable(ptr);
if (FIXNUM_P(c)) {
int cc = FIX2INT(c);
char buf[16];
@ -801,6 +802,7 @@ strio_ungetbyte(VALUE self, VALUE c)
cl = RSTRING_LEN(c);
if (cl == 0) return Qnil;
}
check_modifiable(ptr);
rb_str_modify(str);
if (cl > pos) {
char *s;

8
test/stringio/test_stringio.rb
View file

@ -504,6 +504,14 @@ class TestStringIO < Test::Unit::TestCase
assert_raise(RuntimeError, bug) {s.reopen("")}
end
def test_frozen_string
s = StringIO.new("".freeze)
bug = '[ruby-core:48530]'
assert_raise(IOError, bug) {s.write("foo")}
assert_raise(IOError, bug) {s.ungetc("a")}
assert_raise(IOError, bug) {s.ungetbyte("a")}
end
def test_readlines_limit_0
assert_raise(ArgumentError, "[ruby-dev:43392]") { StringIO.new.readlines(0) }
end