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Returns nil instead of regex match group inside conditional #2787

kaiserprogrammer opened this Issue Mar 31, 2015 · 1 comment


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kaiserprogrammer commented Mar 31, 2015

Problem with DBI gem under jruby-

def parse_url(driver_url)
  if driver_url =~ /^(DBI|dbi):([^:]+)(:(.*))$/ 
    [$2, $4]
    raise InterfaceError, "Invalid Data Source Name"


returns [nil, nil] instead of ["jdbc", "sqlite"]

@enebo enebo added this to the milestone Apr 1, 2015

@enebo enebo added the ir label Apr 1, 2015


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enebo commented Apr 1, 2015

Randomly guessing this was an IR bug and not a regexp problem. I do not see this issue anymore on HEAD:

system ~/work/jruby master *+ 1404% jruby -Xjit.threshold=0 -Xjit.background=false  ../snippets/re2.rb 
["jdbc", "sqlite"]
system ~/work/jruby master *+ 1405% jruby -X-C -Xjit.threshold=0 -Xjit.background=false  ../snippets/re2.rb 
["jdbc", "sqlite"]
system ~/work/jruby master *+ 1406% jruby -X-C -Xjit.threshold=100000 -Xjit.background=false  ../snippets/re2.rb 
["jdbc", "sqlite"]

The syntax is a little arcane but I am testing startup interpreter, full interpreter, and JIT. Resolving.

@enebo enebo closed this Apr 1, 2015

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