Commit Graph

3 Commits

Author SHA1 Message Date
Roman Lebedev 08701ec753 [clang-tidy] Re-commit: Add new 'readability-uppercase-literal-suffix' check (CERT DCL16-C, MISRA C:2012, 7.3, MISRA C++:2008, 2-13-4)
Summary:
Detects when the integral literal or floating point (decimal or hexadecimal)
literal has non-uppercase suffix, and suggests to make the suffix uppercase,
with fix-it.

All valid combinations of suffixes are supported.

```
  auto x = 1;  // OK, no suffix.

  auto x = 1u; // warning: integer literal suffix 'u' is not upper-case

  auto x = 1U; // OK, suffix is uppercase.

  ...
```

This is a re-commit, the original was reverted by me in
rL345305 due to discovered bugs. (implicit code, template instantiation)
Tests were added, and the bugs were fixed.
I'm unable to find any further bugs, hopefully there aren't any..

References:
* [[ https://wiki.sei.cmu.edu/confluence/pages/viewpage.action?pageId=87152241 | CERT DCL16-C ]]
* MISRA C:2012, 7.3 - The lowercase character "l" shall not be used in a literal suffix
* MISRA C++:2008, 2-13-4 - Literal suffixes shall be upper case

Reviewers: JonasToth, aaron.ballman, alexfh, hokein, xazax.hun

Reviewed By: aaron.ballman

Subscribers: Eugene.Zelenko, mgorny, rnkovacs, cfe-commits

Tags: #clang-tools-extra

Differential Revision: https://reviews.llvm.org/D52670

llvm-svn: 345381
2018-10-26 13:09:27 +00:00
Roman Lebedev 5aa945e7ac [clang-tidy] Revert my readability-uppercase-literal-suffix check.
There are some lurking issues with the handling of the SourceManager.
Somehow sometimes we end up extracting completely wrong
portions of the source buffer.

Reverts r344772, r44760, r344758, r344755.

llvm-svn: 345305
2018-10-25 19:44:51 +00:00
Roman Lebedev b2eec586c8 [clang-tidy] Add new 'readability-uppercase-literal-suffix' check (CERT DCL16-C, MISRA C:2012, 7.3, MISRA C++:2008, 2-13-4)
Summary:
Detects when the integral literal or floating point (decimal or hexadecimal)
literal has non-uppercase suffix, and suggests to make the suffix uppercase,
with fix-it.

All valid combinations of suffixes are supported.

```
  auto x = 1;  // OK, no suffix.

  auto x = 1u; // warning: integer literal suffix 'u' is not upper-case

  auto x = 1U; // OK, suffix is uppercase.

  ...
```

References:
* [[ https://wiki.sei.cmu.edu/confluence/pages/viewpage.action?pageId=87152241 | CERT DCL16-C ]]
* MISRA C:2012, 7.3 - The lowercase character "l" shall not be used in a literal suffix
* MISRA C++:2008, 2-13-4 - Literal suffixes shall be upper case

Reviewers: JonasToth, aaron.ballman, alexfh, hokein, xazax.hun

Reviewed By: aaron.ballman

Subscribers: Eugene.Zelenko, mgorny, rnkovacs, cfe-commits

Tags: #clang-tools-extra

Differential Revision: https://reviews.llvm.org/D52670

llvm-svn: 344755
2018-10-18 20:06:40 +00:00