<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/59579>59579</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            clang-format gives different results if line breaks differently. 
        </td>
    </tr>

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

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

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

<pre>
    Example:
```
$ cat a.cpp
#define COMPONENT_EXPORT(X)
template <typename T>
struct struct_template_long {};

COMPONENT_EXPORT(ASH_CONSTANTS) extern const struct_template_long<bool> kAmbientModeCulturalInstitutePhotosEnabled1;

COMPONENT_EXPORT(ASH_CONSTANTS) 
extern const struct_template_long<bool> kAmbientModeCulturalInstitutePhotosEnabled2;
$ clang-format a.cpp
#define COMPONENT_EXPORT(X)
template <typename T> struct struct_template_long {};

COMPONENT_EXPORT(ASH_CONSTANTS)
extern const
    struct_template_long<bool> kAmbientModeCulturalInstitutePhotosEnabled1;

COMPONENT_EXPORT(ASH_CONSTANTS)
extern const struct_template_long<bool>
 kAmbientModeCulturalInstitutePhotosEnabled2;
```


Expected behavior: `kAmbientModeCulturalInstitutePhotosEnabled1` and `kAmbientModeCulturalInstitutePhotosEnabled2` have the same format after formatting. clang-format should gives the same results even if the original codes break lines differently.
</pre>
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