diff options
Diffstat (limited to 'lib/ostruct.rb')
-rw-r--r-- | lib/ostruct.rb | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/lib/ostruct.rb b/lib/ostruct.rb index 50a7ceca12..b1ae641dcb 100644 --- a/lib/ostruct.rb +++ b/lib/ostruct.rb @@ -25,6 +25,9 @@ class OpenStruct if len != 1 raise ArgumentError, "wrong # of arguments (#{len} for 1)", caller(1) end + if self.frozen? + raise TypeError, "can't modify frozen #{self.class}", caller(1) + end mname.chop! @table[mname.intern] = args[0] elsif len == 0 |