Issue #19750 has been reported by tompng (tomoya ishida). ---------------------------------------- Bug #19750: Ruby hangs when parsing Regexp with unterminated unicode "/\u{" https://bugs.ruby-lang.org/issues/19750 * Author: tompng (tomoya ishida) * Status: Open * Priority: Normal * ruby -v: ruby 3.2.2 (2023-03-30 revision e51014f9c0) [arm64-darwin22] * Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN ---------------------------------------- Ruby hangs up for a while and gets `failed to allocate memory (NoMemoryError)` ~~~shell $ ruby -e "/\\u{" ruby: failed to allocate memory (NoMemoryError) ~~~ ~~~ruby RubyVM::AbstractSyntaxTree.parse "/\\u{" # => SyntaxError RubyVM::AbstractSyntaxTree.parse "/\\u{\n" # => failed to allocate memory (NoMemoryError) ~~~ Found in https://github.com/ruby/irb/issues/620 -- https://bugs.ruby-lang.org/