Commit Graph

226 Commits

Author SHA1 Message Date
Kazu Hirata 70257fab68 Use any_of (NFC) 2022-07-22 01:05:17 -07:00
Nathan James fbf611ed2a
[clang-tidy] Extend spelling for CheckOptions
The current way to specify CheckOptions is pretty verbose and unintuitive.
Given that the options are a dictionary it makes much more sense to treat them as such in the config files.
Example:
```
CheckOptions: {SomeCheck.Option: true, SomeCheck.OtherOption: 'ignore'}
# Or
CheckOptions:
  SomeCheck.Option: true
  SomeCheck.OtherOption: 'ignore'
```

This change will still handle the old syntax with no issue, ensuring we don't screw up users current config files.

The only observable differences are support for the new syntax and `-dump=config` will emit using the new syntax.

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D128337
2022-06-23 19:59:31 +01:00
Nathan James 5ca68d5845
[clang-tidy] Add `-verify-config` command line argument
Adds a `-verify-config` command line argument, that when specified will verify the Checks and CheckOptions fields in the config files:
 - A warning will be raised for any check that doesn't correspond to a registered check, a suggestion will also be emitted for close misses.
 - A warning will be raised for any check glob(containing *) that doesn't match any registered check.
 - A warning will be raised for any CheckOption that isn't read by any registered check, a suggestion will also be emitted for close misses.

This can be useful if debuging why a certain check isn't enabled, or the options are being handled as you expect them to be.

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D127446
2022-06-23 19:23:09 +01:00
Sockke 3f3a235aa2 [clang-apply-replacements] Added an option to ignore insert conflict.
If two different texts are inserted at the same offset, clang-apply-replacements prints the conflict error and discards all fixes. This patch adds support for adjusting conflict offset and keeps running to continually fix them.

https://godbolt.org/z/P938EGoxj doesn't have any fixes when I run run-clang-tidy.py to generate a YAML file with clang-tidy and fix them with clang-apply-replacements. The YAML file has two different header texts insertions at the same offset, unlike clang-tidy with '-fix', clang-apply-replacements does not adjust for this conflict.

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D123924
2022-05-30 13:02:25 +08:00
Bernhard Manfred Gruber b1f1688e90 [clang-tidy] support --load in clang-tidy-diff.py/run-clang-tidy.py
Support for loading shared objects as plugins into clang-tidy was added
in http://reviews.llvm.org/D111100. Unfortunately, the utility scripts
`clang-tidy-diff.py` and `run-clang-tidy.py` did not receive
corresponding arguments to forward such plugins to clang-tidy.
This diff adds a `-load=plugin` option to both scripts.

Differential Revision: http://reviews.llvm.org/D12306

Reviewed By: aaron.ballman
2022-04-28 13:49:18 +02:00
Jonas Toth 3f0f203666 run-clang-tidy: Fix infinite loop on windows
`find_compilation_database` checked only for "/" as exit point, but on Windows, this root is impossible.
Fixes #53642

Authored By: Febbe
Reviewed By: JonasToth
Differential Revision: https://reviews.llvm.org/D119481
2022-04-24 17:17:02 +02:00
Aaron Siddhartha Mondal 04b42c99f6 Fix typo in new -config-file option
The new -config-file option introduced by 9e1f4f1 was accidentally
referenced as args.config_path on the python side. This patch renames
args.config_path to args.config_file.

To avoid confusion with python file objects, the input argument for
get_tidy_invocation has been renamed from config_path to
config_file_path.

See GitHub issue #54728 for a discussion.
2022-04-05 16:28:49 -04:00
Shreyas Atre 9e1f4f1398 [clang-tidy][run-clang-tidy.py] Add --config-file=<string> option
Link to the GitHub Issue: https://github.com/llvm/llvm-project/issues/53745

Added config_path variable within the python script which makes the
required call to the clang-tidy binary with --config-file option.
If the config_path is None then config will be used. No error is raised
if both are given but silently chooses config_path over config
2022-03-17 07:30:28 -04:00
Keith Smiley 5da83eeb91 clang-tidy: discover binaries in build dir
This changes the clang-tidy script to discover binaries you've built
locally without having to pass them.

Differential Revision: https://reviews.llvm.org/D100692
2022-03-14 09:04:36 -07:00
Kesavan Yogeswaran c57b8ca721
[clang-tidy] Provide fine control of color in run-clang-tidy
D90110 modified the behavior of `run-clang-tidy` to always pass the
`--use-color` option to clang-tidy, which enabled colored diagnostics
output regardless of TTY status or .clang-tidy settings. This left the
user with no option to disable the colored output.

This presents an issue when trying to parse the output of run-clang-tidy
programmaticall, as the output is polluted with ANSI escape characters.

This PR fixes this issue in two ways:
1. It restores the default behavior of `run-clang-tidy` to let
   `clang-tidy` decide whether to color output. This allows the user to
   configure color via the `UseColor` option in a .clang-tidy file.
2. It adds mutually exclusive, optional `-use-color` and `-no-use-color`
   argument flags that let the user explicitly set the color option via
   the invocation.

After this change the default behavior of `run-clang-tidy` when no
.clang-tidy file is available is now to show no color, presumably
because `clang-tidy` detects that the output is being piped and defaults
to not showing colored output. This seems like an acceptable tradeoff
to respect .clang-tidy configurations, as users can still use the
`-use-color` option to explicitly enable color.

Fixes #49441 (50097 in Bugzilla)

Reviewed By: njames93

Differential Revision: https://reviews.llvm.org/D119562
2022-02-20 22:00:28 +00:00
Jesko Appelfeller 0851970af5 Make run-clang-tidy.py print the configured checks correctly
The test invocation at the start of run-clang-tidy.py (line 257) prints
all enabled checks - meaning either the default set or anything
configured via the -checks option. If any checks were (un-)configured
via the -config option, these are not printed. This is confusing to the
user, since the list of checks that are printed may be different from
the list of checks that are used by the non-testing calls to clang-tidy,
where the -config option is passed correctly.

This patch adds the -config option to the test invocation of clang-tidy
at the start of the script. This means that checks (un-)configured via
the -config option (rather than the -checks option) are applied
correctly, when printing the list of enabled checks.
2022-02-08 08:32:04 -05:00
Jameson Nash 84f137a590 Reland "enable plugins for clang-tidy"
This reverts commit ab3b89855c but
disables the new test if the user has disabled support for building it.
2022-02-01 17:37:24 -05:00
Petr Hosek ab3b89855c Revert "enable plugins for clang-tidy"
This reverts commit 36892727e4 which
breaks the build when LLVM_INSTALL_TOOLCHAIN_ONLY is enabled with:

  CMake Error at cmake/modules/AddLLVM.cmake:683 (add_dependencies):
  The dependency target "clang-tidy-headers" of target "CTTestTidyModule"
  does not exist.
2022-01-31 00:55:43 -08:00
Jameson Nash 36892727e4 enable plugins for clang-tidy
Fixes #32739

Differential Revision: https://reviews.llvm.org/D111100
2022-01-29 14:21:19 -05:00
John Ericson 7c16647c36 [clang-tools-extra][cmake] Use `GNUInstallDirs` to support custom installation dirs.
This is the original patch in my GNUInstallDirs series, now last to merge as the final piece!

It arose as a new draft of D28234. I initially did the unorthodox thing of pushing to that when I wasn't the original author, but since I ended up

 - Using `GNUInstallDirs`, rather than mimicking it, as the original author was hesitant to do but others requested.

 - Converting all the packages, not just LLVM, effecting many more projects than LLVM itself.

I figured it was time to make a new revision.

I have used this patch series (and many back-ports) as the basis of https://github.com/NixOS/nixpkgs/pull/111487 for my distro (NixOS), which was merged last spring (2021). It looked like people were generally on board in D28234, but I make note of this here in case extra motivation is useful.

---

As pointed out in the original issue, a central tension is that LLVM already has some partial support for these sorts of things. Variables like `COMPILER_RT_INSTALL_PATH` have already been dealt with. Variables like `LLVM_LIBDIR_SUFFIX` however, will require further work, so that we may use `CMAKE_INSTALL_LIBDIR`.

These remaining items will be addressed in further patches. What is here is now rote and so we should get it out of the way before dealing more intricately with the remainder.

Reviewed By: #libunwind, #libc, #libc_abi, compnerd

Differential Revision: https://reviews.llvm.org/D99484
2022-01-22 20:57:21 +00:00
John Ericson da77db58d7 Revert "[cmake] Use `GNUInstallDirs` to support custom installation dirs."
https://lab.llvm.org/buildbot/#/builders/46/builds/21146 Still have
this odd error, not sure how to reproduce, so I will just try breaking
up my patch.

This reverts commit 4a678f8072.
2022-01-16 05:48:30 +00:00
John Ericson 4a678f8072 [cmake] Use `GNUInstallDirs` to support custom installation dirs.
This is the original patch in my GNUInstallDirs series, now last to merge as the final piece!

It arose as a new draft of D28234. I initially did the unorthodox thing of pushing to that when I wasn't the original author, but since I ended up

 - Using `GNUInstallDirs`, rather than mimicking it, as the original author was hesitant to do but others requested.

 - Converting all the packages, not just LLVM, effecting many more projects than LLVM itself.

I figured it was time to make a new revision.

I have used this patch series (and many back-ports) as the basis of https://github.com/NixOS/nixpkgs/pull/111487 for my distro (NixOS), which was merged last spring (2021). It looked like people were generally on board in D28234, but I make note of this here in case extra motivation is useful.

---

As pointed out in the original issue, a central tension is that LLVM already has some partial support for these sorts of things. Variables like `COMPILER_RT_INSTALL_PATH` have already been dealt with. Variables like `LLVM_LIBDIR_SUFFIX` however, will require further work, so that we may use `CMAKE_INSTALL_LIBDIR`.

These remaining items will be addressed in further patches. What is here is now rote and so we should get it out of the way before dealing more intricately with the remainder.

Reviewed By: #libunwind, #libc, #libc_abi, compnerd

Differential Revision: https://reviews.llvm.org/D99484
2022-01-16 05:33:07 +00:00
John Ericson 6e52bfe09d Revert "[cmake] Use `GNUInstallDirs` to support custom installation dirs."
Sorry for the disruption, I will try again later.

This reverts commit efeb501970.
2022-01-15 07:35:02 +00:00
John Ericson efeb501970 [cmake] Use `GNUInstallDirs` to support custom installation dirs.
This is the original patch in my GNUInstallDirs series, now last to merge as the final piece!

It arose as a new draft of D28234. I initially did the unorthodox thing of pushing to that when I wasn't the original author, but since I ended up

 - Using `GNUInstallDirs`, rather than mimicking it, as the original author was hesitant to do but others requested.

 - Converting all the packages, not just LLVM, effecting many more projects than LLVM itself.

I figured it was time to make a new revision.

I have used this patch series (and many back-ports) as the basis of https://github.com/NixOS/nixpkgs/pull/111487 for my distro (NixOS), which was merged last spring (2021). It looked like people were generally on board in D28234, but I make note of this here in case extra motivation is useful.

---

As pointed out in the original issue, a central tension is that LLVM already has some partial support for these sorts of things. Variables like `COMPILER_RT_INSTALL_PATH` have already been dealt with. Variables like `LLVM_LIBDIR_SUFFIX` however, will require further work, so that we may use `CMAKE_INSTALL_LIBDIR`.

These remaining items will be addressed in further patches. What is here is now rote and so we should get it out of the way before dealing more intricately with the remainder.

Reviewed By: #libunwind, #libc, #libc_abi, compnerd

Differential Revision: https://reviews.llvm.org/D99484
2022-01-15 01:08:35 +00:00
Serikzhan Kazi 0dc856ed20 [clang-tidy] run-clang-tidy.py: analyze unique files only
The files in compile-commands.json can potentially include duplicates.
Change run-clang-tidy.py so that it does not run on the duplicate entries.

Differential Revision: https://reviews.llvm.org/D112926
2021-11-06 19:53:18 +13:00
Ian Campbell f6ba03584b [clang-tidy] ensure run-clang-tidy reports children killed by signals
If a clang-tidy child process exits with a signal then run-clang-tidy will exit
with an error but there is no hint why in the output, since the clang-tidy
doesn't log anything and may not even have had the opportunity to do so
depending on the signal used.

`subprocess.CompletedProcess.returncode` is the negative signal number in this
case.

I hit this in a CI system where the parallelism used exceeded the RAM assigned
to the container causing the OOM killer to SIGKILL clang-tidy processes.

Reviewed By: sylvestre.ledru

Differential Revision: https://reviews.llvm.org/D99081
2021-07-19 14:18:26 +02:00
Kirill Bobyrev e837ce2a32
[clang-tidy] Add -line-filter to run-clang-tidy.py
This patch allows the use of --line-filter in clang-tidy.py from
run-clang-tidy.py

Author: [bansan (Vincent LE GARREC)](https://reviews.llvm.org/p/bansan/)

Reviewed By: kbobyrev

Differential Revision: https://reviews.llvm.org/D104981
2021-06-28 21:17:36 +02:00
Nathan James abbe9e227e
[clang-tidy] Added command line option `fix-notes`
Added an option to control whether to apply the fixes found in notes attached to clang tidy errors or not.
Diagnostics may contain multiple notes each offering different ways to fix the issue, for that reason the default behaviour should be to not look at fixes found in notes.
Instead offer up all the available fix-its in the output but don't try to apply the first one unless `-fix-notes` is supplied.

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D84924
2021-03-01 22:07:11 +00:00
Florian Schmaus 6c78711f10
[clang-tidy] Install run-clang-tidy.py in bin/ as run-clang-tidy
The run-clang-tidy.py helper script is supposed to be used by the
user, hence it should be placed in the user's PATH. Some
distributions, like Gentoo [1], won't have it in PATH unless it is
installed in bin/.

Furthermore, installed scripts in PATH usually do not carry a filename
extension, since there is no need to know that this is a Python
script. For example Debian and Ubuntu already install this script as
'run-clang-tidy' [2] and hence build systems like Meson also look for
this name first [3]. Hence we install run-clang-tidy.py as
run-clang-tidy, as suggested by Sylvestre Ledru [4].

1: https://bugs.gentoo.org/753380
2: 60aefb1417/debian/clang-tidy-X.Y.links.in (L2)
3: b6dc4d5e5c/mesonbuild/scripts/clangtidy.py (L44)
4: https://reviews.llvm.org/D90972#2380640

Reviewed By: sylvestre.ledru, JonasToth

Differential Revision: https://reviews.llvm.org/D90972
2021-02-23 12:38:27 +00:00
Jonas Otto af06ff1cf8 add -use-color option to clang-tidy-diff.py
Clang-tidy seems to output color only when printing directly to
terminal, but an option to force color-output has been added in
https://reviews.llvm.org/D7947
2021-02-18 09:12:48 -05:00
Nathan James 64badecd44
[clang-tidy][NFC] Reduce copies of Intrusive..FileSystem
Swapped a few instances where a move is more optimal or the target doesn't need to hold a reference.
2020-12-17 14:09:08 +00:00
Nathan James 34d2688a50
[clang-tidy] Use a MemoryBufferRef when parsing configuration files.
Using a MemoryBufferRef, If there is an error parsing, we can point the user to the location of the file.

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D93024
2020-12-10 14:52:45 +00:00
Nathan James bedf3a0f50
[clang-tidy][NFC] Use moves instead of copies when constructing OptionsProviders.
Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D92267
2020-12-10 11:34:57 +00:00
Nathan James 06db8f984f
[clang-tidy] Merge options inplace instead of copying
Changed `ClangTidyOptions::mergeWith` to operate on the instance instead of returning a copy. The old mergeWith method has been renamed to merge and marked as nodiscard, to aid in disambiguating which one is which.

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D91184
2020-11-12 18:19:12 +00:00
Hiral Oza d6a468d622 [clang-tidy] adding "--config-file=<file-path>" to specify custom config file.
Let clang-tidy to read config from specified file.
Example:
$ clang-tidy --config-file=/some/path/myTidyConfig --list-checks --
...this will read config from '/some/path/myTidyConfig'.

ClangTidyMain.cpp reads ConfigFile into string and then assigned read data to 'Config' i.e. makes like '--config' code flow internally.

May speed-up tidy runtime since now it will just look-up <file-path>
instead of searching ".clang-tidy" in parent-dir(s).

Directly specifying config path helps setting build dependencies.

Thanks to @DmitryPolukhin for valuable suggestion. This patch now propose
change only in ClangTidyMain.cpp.

Reviewed By: DmitryPolukhin

Differential Revision: https://reviews.llvm.org/D89936
2020-11-03 11:59:46 +00:00
David Sanders a07a2c88d9 Use --use-color in run-clang-tidy.py
Now that clang-tidy supports the --use-color command line option, it's
a better user experience to use --use-color in run-clang-tidy.py and
preserving the colored output.
2020-11-02 08:38:20 -05:00
Joachim Priesner 03ded5497a Fix -allow-enabling-analyzer-alpha-checkers always being passed to run-clang-tidy.py
The action='store_true' option of argparse.add_argument implicitly
generates a default value of False if the argument is not specified.
Thus, the allow_enabling_alpha_checkers argument of
get_tidy_invocation is never None.
2020-08-20 09:15:29 -04:00
Nathan James d3bf1f3af2 Revert "[clang-tidy] For `run-clang-tidy.py` escape the paths that are used for analysis."
This reverts commit 068fa35746.

Based on a regression reported in https://bugs.llvm.org/show_bug.cgi?id=46536
2020-07-02 08:54:55 +01:00
Nathan James 860aefd078
[clang-tidy][NFC] Remove unnecessary includes throughout clang-tidy header files
Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D82661
2020-06-29 16:05:52 +01:00
Valentin Clement ddf7ae852c [openmp] Add missing dependencies for OMP.h.inc after d90443b 2020-06-23 11:48:04 -04:00
Nathan James 4836188ad9
[clang-tidy] Extend InheritParentConfig to CommandLineConfig
Extend the `InheritParentConfig` support introduced in D75184 for the command line option `--config`.
The current behaviour of `--config` is to when set, disable looking for `.clang-tidy` configuration files.
This new behaviour lets you set `InheritParentConfig` to true in the command line to then look for `.clang-tidy` configuration files to be merged with what's been specified on the command line.

Reviewed By: DmitryPolukhin

Differential Revision: https://reviews.llvm.org/D81949
2020-06-19 12:02:19 +01:00
hyd-dev d9b8aada82
[clang-tidy] Add --use-color command line option and UseColor option to control colors in diagnostics
This patch adds `--use-color` command line option and `UseColor` option to clang-tidy to control colors in diagnostics. With these options, users can force colorful output. This is useful when using clang-tidy with parallelization command line tools (like ninja and GNU parallel), as they often pipe clang-tidy's standard output and make the colors disappear.

Reviewed By: njames93

Differential Revision: https://reviews.llvm.org/D79477
2020-06-18 16:16:14 +01:00
Michał Górny d4f298c820 [clang-tools-extra] Prevent linking to duplicate .a libs and dylib
Fix various tool libraries not to link to clang's .a libraries and dylib
simultaneously.  This may cause breakage, in particular through
duplicate command-line option declarations.

Differential Revision: https://reviews.llvm.org/D81967
2020-06-17 19:00:26 +02:00
Nathan James ccd127008a
[clang-tidy] warnings-as-error no longer exits with ErrorCount
When using `-warnings-as-errors`, If there are any warnings promoted to errors, clang-tidy exits with the number of warnings. This really isn't needed and can cause issues when the number of warnings doesn't fit into 8 bits as POSIX terminals aren't designed to handle more than that.
This addresses https://bugs.llvm.org/show_bug.cgi?id=46305.

Bug originally added in D15528

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D81953
2020-06-17 14:35:37 +01:00
Andi-Bogdan Postelnicu 068fa35746 [clang-tidy] For `run-clang-tidy.py` escape the paths that are used for analysis.
Some paths can have special chars like `file++c.cpp` in this case the regex will
fail if we don't escape it.
2020-06-16 12:21:18 +03:00
Nathan James 5952125691 clang-tidy and clang-query wont crash with invalid command line options
Motivated by [[ https://bugs.llvm.org/show_bug.cgi?id=46141 | clang-tidy crashed for unknown command line argument. ]]

Reviewed By: aaron.ballman, thakis

Differential Revision: https://reviews.llvm.org/D80879
2020-05-31 17:41:29 +01:00
Nathan James f4b0ebb89b Revert "clang-tidy and clang-query wont crash with invalid command line options"
This reverts commit f23ddbe3c3.
2020-05-31 16:40:09 +01:00
Nathan James f23ddbe3c3 clang-tidy and clang-query wont crash with invalid command line options
Summary: Motivated by [[ https://bugs.llvm.org/show_bug.cgi?id=46141 | clang-tidy crashed for unknown command line argument. ]]

Reviewers: aaron.ballman, alexfh

Reviewed By: aaron.ballman

Subscribers: cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D80879
2020-05-31 16:01:41 +01:00
Kirill Bobyrev 968d293063 [clang-tidy] NFC: Cleanup Python scripts
Summary: Silence few PEP8 warnings.

Reviewers: hokein

Reviewed By: hokein

Subscribers: Eugene.Zelenko, xazax.hun, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D78985
2020-05-18 12:21:27 +02:00
Andi-Bogdan Postelnicu bbb7921da9 [clang-tidy] Add option to use alpha checkers from clang-analyzer when using `run-clang-tidy.py`
Summary: Add option to use alpha checkers from clang-analyzer when using `run-clang-tidy.py`.

Reviewers: JonasToth

Subscribers: xazax.hun, baloghadamsoftware, a.sidorin, Szelethus, donat.nagy, dkrupp, Charusso, ASDenysPetrov, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D77882
2020-04-23 11:36:50 +03:00
Dmitry Polukhin cb1ee34e9d [clang-tidy] Optional inheritance of file configs from parent directories
Summary:
Without this patch clang-tidy stops finding file configs on the nearest
.clang-tidy file. In some cases it is not very convenient because it
results in common parts duplication into every child .clang-tidy file.
This diff adds optional config inheritance from the parent directories
config files.

Test Plan:

Added test cases in existing config test.

Reviewers: alexfh, gribozavr2, klimek, hokein

Subscribers: njames93, arphaman, xazax.hun, aheejin, cfe-commits

Tags: #clang, #clang-tools-extra

Differential Revision: https://reviews.llvm.org/D75184
2020-04-15 06:41:31 -07:00
Johannes Doerfert 530377018f [OpenMP] "UnFix" last layering problem with FrontendOpenMP
It seems one target was missed in D77666 which kept some bots red [0].

[0] http://lab.llvm.org:8011/builders/clang-ppc64le-linux-multistage/builds/12079/steps/build%20stage%201/logs/stdio
2020-04-07 22:47:41 -05:00
Benjamin Kramer adcd026838 Make llvm::StringRef to std::string conversions explicit.
This is how it should've been and brings it more in line with
std::string_view. There should be no functional change here.

This is mostly mechanical from a custom clang-tidy check, with a lot of
manual fixups. It uncovers a lot of minor inefficiencies.

This doesn't actually modify StringRef yet, I'll do that in a follow-up.
2020-01-28 23:25:25 +01:00
Dmitry Polukhin 3f8b100e94 [clang-tidy] Add library for clang-tidy main function
Summary:
This library allows to create clang-tidy tools with custom checks outside of llvm repo
using prebuilt clang release tarball.

Test Plan:
Checked that clang-tidy works as before. New library exists in istall dir.

Reviewers: smeenai, gribozavr, stephanemoore

Subscribers: mgorny, xazax.hun, cfe-commits

Tags: #clang-tools-extra, #clang

Differential Revision: https://reviews.llvm.org/D73300
2020-01-24 13:00:45 -08:00
Rui Ueyama a7acba29c1 Use InitLLVM in clang-tidy
Update clang-tidy to use InitLLVM, like several other llvm tools that
were previously updated. On Windows, this allows clang-tidy to operate
on arguments containing characters which cannot be represented in the
system's ANSI code page such as filenames with Unicode characters.

Fixes bugzilla bug 43751.

Patch by Tristan Labelle.

Differential Revision: https://reviews.llvm.org/D70694
2019-11-28 13:50:35 +09:00