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.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38628 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38628 b2dd03c8-39d4-4d8f-98ff-823fe69b080e