`raise` in `Exception#message` causes infinite loop
This code does not stop.
class A < StandardError def message raise end end raise A
The following code also does not stop.
class A < StandardError def message 1/0 end end raise A
And they ignore CTRL-C, so I should do CTRL-Z (suspend) and
kill -9 to stop them.
I confirmed the problem in Ruby 2.5 and trunk.
$ ruby -v ruby 2.5.0p0 (2017-12-25 revision 61468) [x86_64-linux] $ ruby -v ruby 2.6.0dev (2018-03-01 trunk 62592) [x86_64-linux]
But Ruby 2.4 and 2.3 do not stop (I does not have Ruby 2.2 because I cannot build it in my environment.).
I can get same outputs between
1/0 in the
message method body.
$ ruby -v test.rb ruby 2.4.3p205 (2017-12-14 revision 61247) [x86_64-linux] test.rb:7:in `<main>': A $ ruby -v test.rb ruby 2.3.6p384 (2017-12-14 revision 61254) [x86_64-linux] test.rb:7:in `<main>': A
Updated by ujihisa (Tatsuhiro Ujihisa) over 2 years ago
I tried making a patch fixing this issue. See attached.
This patch makes the behaviour similar to the old Ruby, rescuing any exceptions in the "message" method, but also warns that an exception was automatically caught.
I'm not 100% sure if this is the solution that everyone wants. Also the test in the patch needs an update; I wasn't sure how to make sure if it's not causing infinite loop. I just left a draft as a comment there.
Updated by nobu (Nobuyoshi Nakada) over 2 years ago
- Status changed from Open to Closed