<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/145226>145226</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            clang-format format several times gives different result
        </td>
    </tr>

    <tr>
      <th>Labels</th>
      <td>
            clang-format
      </td>
    </tr>

    <tr>
      <th>Assignees</th>
      <td>
      </td>
    </tr>

    <tr>
      <th>Reporter</th>
      <td>
          kelbon
      </td>
    </tr>
</table>

<pre>
    ```cpp
#define TAG(...)  struct a {             \ 
  };
```

clang-format once gives

```cpp
#define TAG(...) \
  struct a {     \
    \ 
 \
  };
```

clang-format second time gives

```cpp
#define TAG(...) \
  struct a {     \
    \ 
                      \
  };
```
And its endless:

third time:

```cpp
#define TAG(...) \
  struct a { \
    \ 
                                \ < this brake moves to right every time
  };
```

```bash
clang-format --version
  clang-format version 20.1.5
```


.clang-format file:

```cpp
BasedOnStyle: Google
ColumnLimit : 110
AllowShortFunctionsOnASingleLine: false
AllowShortLambdasOnASingleLine: true
AllowShortIfStatementsOnASingleLine: false
AllowShortLoopsOnASingleLine: false
SortIncludes: false
DerivePointerAlignment: false # disables 'Google' option which forces ignoring my rules
PointerAlignment: Left
ReferenceAlignment: Left
InsertNewlineAtEOF: true
IndentPPDirectives: BeforeHash
```


</pre>
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