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Without this patch, when using lit's internal shell, if `not` on a lit
RUN line calls `env`, `diff`, or any of the other in-process shell
builtins that lit implements, lit accidentally searches for the latter
as an external executable. What's worse is that works fine when a
developer is testing on a platform where those executables are
available and behave as expected, but it then breaks on other
platforms.
`not` seems useful for some builtins, such as `diff`, so this patch
supports such uses. `not --crash` does not seem useful for builtins,
so this patch diagnoses such uses. In all cases, this patch ensures
shell builtins are found behind any sequence of `env` and `not`
commands.
`not` calling `env` calling an external command appears useful when
the `env` and external command are part of a lit substitution, as in
D65156. This patch supports that by looking through any sequence of
`env` and `not` commands, building the environment from the `env`s,
and storing the `not`s. The `not`s are then added back to the command
line without the `env`s to execute externally. This avoids the need
to replicate the `not` implementation, in particular the `--crash`
option, in lit.
Reviewed By: rnk
Differential Revision: https://reviews.llvm.org/D66531
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Without this patch, when using lit's internal shell, if `env` on a lit
RUN line calls `env`, lit accidentally searches for the latter as an
external executable. What's worse is that works fine when a developer
is testing on a platform where `env` is available and behaves as
expected, but it then breaks on other platforms.
`env` calling `env` can make sense if one such `env` is within a lit
substitution, as in D65156 and D65121. This patch ensures that lit
executes both as internal commands.
Reviewed By: probinson, mgorny, rnk
Differential Revision: https://reviews.llvm.org/D65697
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Without this patch, when using lit's internal shell, if `env` on a lit
RUN line calls `cd`, `mkdir`, or any of the other in-process shell
builtins that lit implements, lit accidentally searches for the latter
as an external executable.
This patch puts such builtins in a map so that boilerplate for them
need be implemented only once. This patch moves that handling after
processing of `env` so that `env` calling such a builtin can be
detected. Finally, because such calls appear to be useless, this
patch takes the safe approach of diagnosing them rather than
supporting them.
Reviewed By: probinson, mgorny, rnk
Differential Revision: https://reviews.llvm.org/D66506
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Without this patch, failing to provide a subcommand to lit's internal
`env` results in either a python `IndexError` or an attempt to execute
the final `env` argument, such as `FOO=1`, as a command. This patch
diagnoses those cases with a more helpful message.
Reviewed By: stella.stamenova
Differential Revision: https://reviews.llvm.org/D66482
llvm-svn: 369620
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Without this patch, the internal `env` command removes `env` and its
args from the command line while parsing it. This patch modifies a
copy instead so that the original command line is printed.
Reviewed By: stella.stamenova, rnk
Differential Revision: https://reviews.llvm.org/D65624
llvm-svn: 367752
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Put the main test script in the right directory, and fix a python bug
in a local script.
Reviewed By: stella.stamenova
Differential Revision: https://reviews.llvm.org/D65623
llvm-svn: 367751
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