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lib/drb/extservm.rb (service): do not return `false'

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invoke_service_command may set entries in @servers to `false',
making it incompatible with the intended use of the
safe navigation operator.

This caused occasional DRb test failures, but they were hidden
with automatic retry.

[ruby-core:87524] [Bug #14856]

Fixes: r53111 ("use safe navigation operator")
	commit 059c9c1cf371e049c7481c78b76e9620da52757f [GH-1142]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63698 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
normal 2018-06-19 23:20:36 +00:00
parent 9d55666225
commit 0c53b40033
1 changed files with 1 additions and 1 deletions
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lib/drb/extservm.rb
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@ -37,7 +37,7 @@ module DRb
synchronize do synchronize do
while true while true
server = @servers[name] server = @servers[name]
return server if server&.alive? return server if server && server.alive? # server may be `false'
invoke_service(name) invoke_service(name)
@cond.wait @cond.wait
end end