Bug #16088: [patch] Call #to_binary on iseq containing pattern match crashes

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 2.7.0dev (2019-08-06T18:13:17Z master 8877dbe400) [x86_64-darwin18]
• Backport: 2.5: UNKNOWN, 2.6: UNKNOWN

[alanwu (Alan Wu)]

Crasher: miniruby -e 'RubyVM::InstructionSequence.compile("case foo in []; end").to_binary'
It crashes since there is no handling for dumping TypeError and NoMatchingPatternError in the binary dumper.
Patch: https://github.com/ruby/ruby/pull/2325

[alanwu (Alan Wu)]

• Status changed from Open to Closed

Applied in changeset git|050b932152fb3004c78af223186afe1aa397f06f.

---

Iseq#to_binary: Add support for NoMatchingPatternError and TypeError

Binary dumping the iseq for case foo in []; end used to crash as
there was no handling for these exception classes.

Pattern matching generates these classes as operands to putobject.

[Bug #16088]
Closes: https://github.com/ruby/ruby/pull/2325