Commit Graph

3 Commits

Author SHA1 Message Date
Matthias Gehre 4241cedb68 [clang-tidy] cppcoreguidelines-pro-bounds-pointer-arithmetic: ignore generated pointer arithmetic
Summary:
Inside a range-based for-loop over an array, the compiler
generates pointer arithmetic (end = array + size). Don't flag this.

Reviewers: alexfh, sbenza, bkramer, aaron.ballman

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D14582

llvm-svn: 254182
2015-11-26 22:32:11 +00:00
Manuel Klimek b91bee06de Add %check_clang_tidy and %clang_tidy_diff.
With this, site specific lit configs can inject parameters into the
test scripts if they need site specific parameters.

Next up: enable check_clang_tidy to take a resource dir to enable
non-standard locations for builtin includes.

llvm-svn: 251010
2015-10-22 11:31:44 +00:00
Matthias Gehre dc48412c93 [clang-tidy] new check cppcoreguidelines-pro-bounds-pointer-arithmetic
Summary:
This check flags all usage of pointer arithmetic, because it could lead
to an
invalid pointer.
Subtraction of two pointers is not flagged by this check.

Pointers should only refer to single objects, and pointer arithmetic is
fragile and easy to get wrong. array_view is a bounds-checked, safe type
for accessing arrays of data.

This rule is part of the "Bounds safety" profile of the C++ Core
Guidelines, see
https://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md#-bounds1-dont-use-pointer-arithmetic-use-array_view-instead

Depends on D13313

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D13311

llvm-svn: 250116
2015-10-12 21:53:19 +00:00