From 9c61e1cd87aca3646fe39a6d53223efdcb11e250 Mon Sep 17 00:00:00 2001 From: Bouke van der Bijl Date: Mon, 28 Nov 2016 15:04:27 -0500 Subject: Use mrb_ptr instead of mrb_cptr in Kernel#to_s This is to avoid segfault when WORD_BOXING is enabled Reported by https://hackerone.com/brakhane --- test/t/kernel.rb | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'test/t/kernel.rb') diff --git a/test/t/kernel.rb b/test/t/kernel.rb index d240e59dc..e59bd6a10 100644 --- a/test/t/kernel.rb +++ b/test/t/kernel.rb @@ -520,6 +520,21 @@ assert('Kernel#to_s', '15.3.1.3.46') do assert_equal to_s.class, String end +assert('Kernel#to_s on primitives') do + begin + Fixnum.alias_method :to_s_, :to_s + Fixnum.remove_method :to_s + + assert_nothing_raised do + # segfaults if mrb_cptr is used + 1.to_s + end + ensure + Fixnum.alias_method :to_s, :to_s_ + Fixnum.remove_method :to_s_ + end +end + assert('Kernel.local_variables', '15.3.1.2.7') do a, b = 0, 1 a += b -- cgit v1.2.3