Bug #21259: The Prism compiler wrongly creates a line number of zero

• Status: Assigned
• Assignee: prism
• Target version: -
• Backport: 3.2: UNKNOWN, 3.3: UNKNOWN, 3.4: UNKNOWN

[mame (Yusuke Endoh)]

test.rb

TracePoint.new(:line) do |tp|
  p tp
end.enable

load "./target.rb"

target.rb

if true..true
end

$ ~/work/ruby/local/bin/ruby --parser=prism test.rb
#<TracePoint:line test.rb:5>
#<TracePoint:line /tmp/reproduce-simplecov-ruby34-bug/target.rb:0> # <=== This lineno should be 1

$ ~/work/ruby/local/bin/ruby --parser=parse.y test.rb
#<TracePoint:line test.rb:5>
#<TracePoint:line /tmp/reproduce-simplecov-ruby34-bug/target.rb:1>

[mame (Yusuke Endoh)]

• Related to Bug #21220: Memory corruption in update_line_coverage() [write at index -1] added