verify the argument of String#=~

e137d142 · h2so5 · 55ef024e · e137d142
Commit e137d142 authored Dec 24, 2013 by h2so5
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mrblib/string.rb mrblib/string.rb +3 -0

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--- a/mrblib/string.rb
+++ b/mrblib/string.rb
@@ -137,6 +137,9 @@ class String
  ##
  # ISO 15.2.10.5.5
  def =~(re)
+    if re.is_a? String
+      raise TypeError, "type mismatch: String given"
+    end
    re =~ self
  end