Rewrite unix fork reopen to be compatible with ruby 2.6 #149
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On ruby 2.6 the original code would fail specs: lib/childprocess/unix/fork_exec_process.rb:32:in `reopen': exclusive access mode is not supported (ArgumentError) The documentation for reopen shows that it has two ways to call it: reopen(other_IO) -> ios reopen(path, mode [,opt]) -> ios With ruby 2.4 and 2.5 calling reopen with a path and no mode seems to work fine, but with ruby 2.6 this triggers the spec failure. This commit splits the calls based on stdout/stderr availability so that both types of reopen calls can get the required parameters. This fixes the 2.6 specs while being backward compatible with ruby 2.4 and 2.5.
zmedico
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Apr 29, 2019
enkessler/childprocess#149 Signed-off-by: Hans de Graaff <graaff@gentoo.org> Package-Manager: Portage-2.3.62, Repoman-2.3.11
3 similar comments
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Thanks for the fix, @graaff. Can we add Ruby 2.6 to the Travis and AppVeyor CI matrices so we can confirm your fix results in a passing build? The one failure on AppVeyor looks spurious—I've seen it before. |
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I wanted to do that in a separate commit but forgot to include that yet. You can verify already with ruby-head which now passes (checked on travis), but I'll update the pull request. |
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Amazing, thank you @graaff! |
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Thanks for the quick response and the merge. |
netbsd-srcmastr
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Mar 24, 2020
Update ruby-childprocessto 3.0.0. ### Version 3.0.0 / 2019-09-20 * [#156](enkessler/childprocess#156 unused `rubyforge_project` from gemspec * [#160](enkessler/childprocess#160): Remove extension to conditionally install `ffi` gem on Windows platforms * [#160](enkessler/childprocess#160): Remove runtime dependency on `rake` gem ### Version 2.0.0 / 2019-07-11 * [#148](enkessler/childprocess#148): Drop support for Ruby 2.0, 2.1, and 2.2 * [#149](enkessler/childprocess#149): Fix Unix fork reopen to be compatible with Ruby 2.6 * [#152](enkessler/childprocess#152): Fix hangs and permission errors introduced in Ruby 2.6 for leader processes of process groups ### Version 1.0.1 / 2019-02-03 * [#143](enkessler/childprocess#144): Fix installs by adding `rake` gem as runtime dependency * [#147](enkessler/childprocess#147): Relax `rake` gem constraint from `< 12` to `< 13` ### Version 1.0.0 / 2019-01-28 * [#134](enkessler/childprocess#134): Add support for non-ASCII characters on Windows * [#132](enkessler/childprocess#132): Install `ffi` gem requirement on Windows only * [#128](enkessler/childprocess#128): Convert environment variable values to strings when `posix_spawn` enabled * [#141](enkessler/childprocess#141): Support JRuby on Java >= 9
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On ruby 2.6 the original code would fail specs:
lib/childprocess/unix/fork_exec_process.rb:32:in `reopen': exclusive
access mode is not supported (ArgumentError)
The documentation for reopen shows that it has two ways to call it:
reopen(other_IO) -> ios
reopen(path, mode [,opt]) -> ios
With ruby 2.4 and 2.5 calling reopen with a path and no mode seems to
work fine, but with ruby 2.6 this triggers the spec failure.
This commit splits the calls based on stdout/stderr availability so
that both types of reopen calls can get the required parameters. This
fixes the 2.6 specs while being backward compatible with ruby 2.4 and
2.5.