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Do not crash if unable to find root #2024

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merged 1 commit into from
Apr 8, 2019

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rgrinberg
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When trying to list a directory, ignore Unix errors but stop recursing.

@rgrinberg rgrinberg requested review from a user, aalekseyev and emillon April 5, 2019 04:58
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@aalekseyev
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I'm confused.
Last time I looked, functions in Sys didn't raise Unix_errors.
Do you think this is something that can be demonstrated in a test?

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@aalekseyev aalekseyev left a comment

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Add a test

@rgrinberg
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Ah yes, indeed. I will add a test and add a version of readdir that doesn't let us make this mistake.

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Add a test

I'm actually not sure how. When running the tests, dune sets the root using INSIDE_DUNE :/

When trying to list a directory, ignore Unix errors but stop recursing.

Signed-off-by: Rudi Grinberg <[email protected]>
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@aalekseyev if it helps, I tested the change manually now and it works.

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Ah, I see. I guess we could make root discovery configurable in a more flexible way than OFF/ON based on INSIDE_DUNE, but that's probably more complicated than this test is worth.

Manual testing seems OK for this then.

@ejgallego ejgallego removed their request for review April 8, 2019 12:44
@rgrinberg rgrinberg merged commit c341f13 into ocaml:master Apr 8, 2019
@rgrinberg rgrinberg deleted the warn-find-root branch April 8, 2019 13:46
rgrinberg added a commit to rgrinberg/opam-repository that referenced this pull request Apr 9, 2019
CHANGES:

- Warn when generated `.merlin` does not reflect the preprocessing
  specification. This occurs when multiple stanzas in the same directory use
  different preprocessing specifications. This warning can now be disabled with
  `allow_approx_merlin` (ocaml/dune#1947, fix ocaml/dune#1946, @rgrinberg)

- Watch mode: display "Success" in green and "Had errors" in red (ocaml/dune#1956,
  @emillon)

- Fix glob dependencies on installed directories (ocaml/dune#1965, @rgrinberg)

- Add support for library variants and default implementations. (ocaml/dune#1900,
  @TheLortex)

- Add experimental `$ dune init` command. This command is used to create or
  update project boilerplate. (ocaml/dune#1448, fixes ocaml/dune#159, @shonfeder)

- Experimental Coq support (fix ocaml/dune#1466, @ejgallego)

- Install .cmi files of private modules in a `.private` directory (ocaml/dune#1983, fix
  ocaml/dune#1973 @rgrinberg)

- Fix `dune subst` attempting to substitute on directories. (ocaml/dune#2000, fix ocaml/dune#1997,
  @rgrinberg)

- Do not list private modules in the generated index. (ocaml/dune#2009, fix ocaml/dune#2008,
  @rgrinberg)

- Warn instead of failing if an opam file fails to parse. This opam file can
  still be used to define scope. (ocaml/dune#2023, @rgrinberg)

- Do not crash if unable to read a directory when traversing to find root
  (ocaml/dune#2024, @rgrinberg)

- Do not exit dune if some source directories are unreadable. Instead, warn the
  user that such directories need to be ignored (ocaml/dune#2004, fix ocaml/dune#310, @rgrinberg)

- Fix nested `(binaries ..)` fields in the `env` stanza. Previously, parent
  `binaries` fields would be ignored, but instead they should be combined.
  (ocaml/dune#2029, @rgrinberg)

- Allow "." in `c_names` and `cxx_names` (ocaml/dune#2036, fix ocaml/dune#2033, @rgrinberg)
rgrinberg added a commit to rgrinberg/opam-repository that referenced this pull request Apr 9, 2019
CHANGES:

- Warn when generated `.merlin` does not reflect the preprocessing
  specification. This occurs when multiple stanzas in the same directory use
  different preprocessing specifications. This warning can now be disabled with
  `allow_approx_merlin` (ocaml/dune#1947, fix ocaml/dune#1946, @rgrinberg)

- Watch mode: display "Success" in green and "Had errors" in red (ocaml/dune#1956,
  @emillon)

- Fix glob dependencies on installed directories (ocaml/dune#1965, @rgrinberg)

- Add support for library variants and default implementations. (ocaml/dune#1900,
  @TheLortex)

- Add experimental `$ dune init` command. This command is used to create or
  update project boilerplate. (ocaml/dune#1448, fixes ocaml/dune#159, @shonfeder)

- Experimental Coq support (fix ocaml/dune#1466, @ejgallego)

- Install .cmi files of private modules in a `.private` directory (ocaml/dune#1983, fix
  ocaml/dune#1973 @rgrinberg)

- Fix `dune subst` attempting to substitute on directories. (ocaml/dune#2000, fix ocaml/dune#1997,
  @rgrinberg)

- Do not list private modules in the generated index. (ocaml/dune#2009, fix ocaml/dune#2008,
  @rgrinberg)

- Warn instead of failing if an opam file fails to parse. This opam file can
  still be used to define scope. (ocaml/dune#2023, @rgrinberg)

- Do not crash if unable to read a directory when traversing to find root
  (ocaml/dune#2024, @rgrinberg)

- Do not exit dune if some source directories are unreadable. Instead, warn the
  user that such directories need to be ignored (ocaml/dune#2004, fix ocaml/dune#310, @rgrinberg)

- Fix nested `(binaries ..)` fields in the `env` stanza. Previously, parent
  `binaries` fields would be ignored, but instead they should be combined.
  (ocaml/dune#2029, @rgrinberg)

- Allow "." in `c_names` and `cxx_names` (ocaml/dune#2036, fix ocaml/dune#2033, @rgrinberg)

- Format rules: if a dune file uses OCaml syntax, do not format it.
  (ocaml/dune#2014, fix ocaml/dune#2012, @emillon)
@rgrinberg rgrinberg restored the warn-find-root branch April 20, 2019 05:46
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3 participants