Commit Graph

7 Commits

Author SHA1 Message Date
John Stiles
bfbe71252a Enable ClangTidy check performance-for-range-copy.
This will prevent us from writing range-based for loops that copy the
loop variable when a const& would suffice.

https://clang.llvm.org/extra/clang-tidy/checks/performance-for-range-copy.html
-----
Finds C++11 for ranges where the loop variable is copied in each
iteration but it would suffice to obtain it by const reference.

The check is only applied to loop variables of types that are expensive
to copy which means they are not trivially copyable or have a
non-trivial copy constructor or destructor.

Change-Id: Ic26bff7e9c48b4d1a9ad9c0606199920ea7a0af8
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/306945
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
2020-07-31 01:42:51 +00:00
John Stiles
e554301263 Enable ClangTidy guard bugprone-argument-comment.
https://clang.llvm.org/extra/clang-tidy/checks/bugprone-argument-comment.html
-----
Checks that argument comments match parameter names.

The check understands argument comments in the form /*parameter_name=*/
that are placed right before the argument.

  void f(bool foo);

  ...

  f(/*bar=*/true);
  // warning: argument name 'bar' in comment does not match parameter
  // name 'foo'

The check tries to detect typos and suggest automated fixes for them.
-----

Change-Id: I76fa82f5338f465b8f9e5a13654195f25a618b35
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/306848
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
2020-07-30 18:24:00 +00:00
John Stiles
5f2b2d6dc6 Enable ClangTidy guard bugprone-unused-raii.
https://clang.llvm.org/extra/clang-tidy/checks/bugprone-unused-raii.html
-------
Finds temporaries that look like RAII objects.

The canonical example for this is a scoped lock.

{
  scoped_lock(&global_mutex);
  critical_section();
}

The destructor of the scoped_lock is called before the critical_section
is entered, leaving it unprotected.
-------

Change-Id: I40394eb84e7e4ad0564c409ecb52df2ef5af35b6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/306838
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
2020-07-30 16:17:20 +00:00
John Stiles
398c654ce7 Enable ClangTidy 'undelegated constructor' warning.
Change-Id: I79dee7422f8a24fa0fffef33b131e96b5bf0d4ba
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/306728
Commit-Queue: John Stiles <johnstiles@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
2020-07-29 23:26:00 +00:00
Mike Klein
c33d614357 add google-build-namespaces to clang-tidy checks
Android's using this check in their clang-tidy builds.

The check itself is well intentioned but doesn't seem to take into
account the particular reason we do this... being able to use these
types and functions from files compiled with different optimization
settings without causing ODR violations or runtime crashes.

Each of the places that's marked is using an anonymous namespace
from a header for good reason, but I don't mind making clang-tidy
ask us to explicitly exempt any others that may come up in the
future.  It's definitely unusual, and rarely the best idea.

Adding -header-filters='.*' actually checks headers...
until now they've been ignored.

Change-Id: Ie421d2b47076bd384b10c7339cfb7a1c3ea90906
Reviewed-on: https://skia-review.googlesource.com/c/176963
Commit-Queue: Mike Klein <mtklein@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Auto-Submit: Mike Klein <mtklein@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
2018-12-12 16:33:59 +00:00
Mike Klein
21840ed430 restrict -Werror to runs of clang-tidy.sh
Android runs clang-tidy with a different set of checks
that override our choices in .clang-tidy.

Change-Id: I95d92bb9b61bc5f94fe2bb8bff382edd876d2594
Reviewed-on: https://skia-review.googlesource.com/c/176962
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
2018-12-12 14:29:50 +00:00
Mike Klein
1688507f83 Try out clang-tidy, starting with bugprone-use-after-move
- add drop-in clang-tidy cxx wrapper
 - get build clean for bugprone-use-after-move

The wrapper can be used by setting

   cxx = "/path/to/skia/tools/clang-tidy.sh"

in GN.

Change-Id: Idbba911e23bd6ef7530b08fd31906b92c1c1b28c
Reviewed-on: https://skia-review.googlesource.com/c/176523
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
2018-12-11 17:28:19 +00:00