[ruby-core:50521] [ruby-trunk - Feature #7435] Exceptions should have backtrace_locations

Issue #7435 has been updated by ko1 (Koichi Sasada).


One more comment.

Exception class has Exception#set_backtrace method, which set backtrace using string array.  It conflicts with locations.

We need to solve this issue to support Exception#backtrace_locations.

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Feature #7435: Exceptions should have backtrace_locations
https://bugs.ruby-lang.org/issues/7435#change-34359

Author: sam.saffron (Sam Saffron)
Status: Rejected
Priority: Normal
Assignee: ko1 (Koichi Sasada)
Category: core
Target version: next minor


Further to http://bugs.ruby-lang.org/issues/7051 

def boom
  raise "boom"
end

begin
  boom
rescue => e
  p e.backtrace
end

# ["t.rb:2:in `boom'", "t.rb:6:in `<main>'"]

It seems exceptions still store backtraces in strings, shouldn't the backtrace be stored in RubyVM::Backtrace::Location objects and then optionally grabbed using backtrace_locations or backtrace depending on how you feel? 

This means exceptions could be more efficient as filenames could easily be pinned in memory leading to significantly reduced allocation for exceptions. 


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