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-rw-r--r--lib/erb.rb3
-rw-r--r--test/erb/test_erb.rb27
2 files changed, 30 insertions, 0 deletions
diff --git a/lib/erb.rb b/lib/erb.rb
index 445d4795b0..1266ee8169 100644
--- a/lib/erb.rb
+++ b/lib/erb.rb
@@ -1086,6 +1086,9 @@ class ERB
# ```
#
def def_method(mod, methodname, fname='(ERB)')
+ unless @_init.equal?(self.class.singleton_class)
+ raise ArgumentError, "not initialized"
+ end
src = self.src.sub(/^(?!#|$)/) {"def #{methodname}\n"} << "\nend\n"
mod.module_eval do
eval(src, binding, fname, -1)
diff --git a/test/erb/test_erb.rb b/test/erb/test_erb.rb
index 09496d31e2..9eec43da15 100644
--- a/test/erb/test_erb.rb
+++ b/test/erb/test_erb.rb
@@ -664,6 +664,33 @@ EOS
assert_raise(ArgumentError) {erb.result}
end
+ def test_prohibited_marshal_load_def_method
+ erb = ERB.allocate
+ erb.instance_variable_set(:@src, "")
+ erb.instance_variable_set(:@lineno, 1)
+ erb.instance_variable_set(:@_init, true)
+ erb = Marshal.load(Marshal.dump(erb))
+ assert_raise(ArgumentError) {erb.def_method(Class.new, 'render')}
+ end
+
+ def test_prohibited_marshal_load_def_module
+ erb = ERB.allocate
+ erb.instance_variable_set(:@src, "")
+ erb.instance_variable_set(:@lineno, 1)
+ erb.instance_variable_set(:@_init, true)
+ erb = Marshal.load(Marshal.dump(erb))
+ assert_raise(ArgumentError) {erb.def_module}
+ end
+
+ def test_prohibited_marshal_load_def_class
+ erb = ERB.allocate
+ erb.instance_variable_set(:@src, "")
+ erb.instance_variable_set(:@lineno, 1)
+ erb.instance_variable_set(:@_init, true)
+ erb = Marshal.load(Marshal.dump(erb))
+ assert_raise(ArgumentError) {erb.def_class}
+ end
+
def test_multi_line_comment_lineno
erb = ERB.new(<<~EOS)
<%= __LINE__ %>