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[clang-format] Misaligned trailing comments in the presence of an empty block comment #53441

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mkurdej opened this issue Jan 27, 2022 · 3 comments
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[clang-format] Misaligned trailing comments in the presence of an empty block comment #53441

mkurdej opened this issue Jan 27, 2022 · 3 comments
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bug Indicates an unexpected problem or unintended behavior clang-format

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mkurdej commented Jan 27, 2022

That's a minor issue.

With LLVM style, alignment of comments is off if there's an empty block comment at the beginning of the line.
Minimal repro:

/**/     //
int a; //

Expected:

/**/   //
int a; //

Mind, formatting is fine if there's at least a single character in the block comment.
@mkurdej mkurdej added bug Indicates an unexpected problem or unintended behavior clang-format labels Jan 27, 2022
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llvmbot commented Jan 27, 2022

@llvm/issue-subscribers-bug

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llvmbot commented Jan 27, 2022

@llvm/issue-subscribers-clang-format

@mkurdej mkurdej self-assigned this Jan 28, 2022
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mkurdej commented Jan 28, 2022

Revision URI: https://reviews.llvm.org/D118475

@mkurdej mkurdej added the awaiting-review Has pending Phabricator review label Jan 28, 2022
@github-actions github-actions bot removed the awaiting-review Has pending Phabricator review label Jan 28, 2022
arichardson pushed a commit to CTSRD-CHERI/llvm-project that referenced this issue Jan 3, 2023
@mkurdej @arichardson
[clang-format] Fix misaligned trailing comments in the presence of an…
614afbd 
… empty block comment.

Fixes llvm/llvm-project#53441.

Expected code:
```
/**/   //
int a; //
```

was before misformatted to:
```
/**/     //
int a; //
```

Because the "remaining length" (after the starting `/*`) of an empty block comment `/**/` was computed to be 0 instead of 2.

Reviewed By: MyDeveloperDay, HazardyKnusperkeks, owenpan

Differential Revision: https://reviews.llvm.org/D118475
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