<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/89921>89921</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            clang-tidy wrongly reports bugprone-macro-parentheses on non-arguments
        </td>
    </tr>

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

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

    <tr>
      <th>Reporter</th>
      <td>
          j-jorge
      </td>
    </tr>
</table>

<pre>
    Given the following code :
```c++
#include <cstdio>

#ifndef FOO
#define FOO a-b
#endif

int main()
{
#define STR0(x) #x
#define STR(x) STR0(x)
  printf("%s\n", STR(FOO));
}
```
A run of `clang-tidy --checks=bugprone-macro-parentheses` will complain about the need of replacing `a` and `b` by `(a)` and `(b)` ([Compiler Explorer demo](https://godbolt.org/z/ETdvP75av)) :
```
warning: macro replacement list should be enclosed in parentheses [bugprone-macro-parentheses]
[<source>:4:14: warning: macro replacement list should be enclosed in parentheses [bugprone-macro-parentheses]](javascript:;)
    4 | #define FOO a-b
```

I believe this is a false positive. Since none of `a` or `b` are arguments of the macro they should not be considered by the check.

My actual use case is similar to this code. I have a preprocessor definition coming from the command line (`-DFOO=some-string-with-dashes`) which I turn into a C-string in the code via the `STR()` macro. The workaround is to drop the `STR` macro and put the quotes in the command-line, but I would have preferred no workaround :)
</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJy8VcuSqzYQ_Rp504ULS2DDgoUf49QsUjeVOz8gUAOaKyQiCXucr081eGacSW6WqVJhPVrq7tPntGUIurOIFcsPLD-t5BR756vX5NX5Dle1U7fqF31BC7FHaJ0x7qptB41TyI6c7VMm9iw9sXTPtukyGsYPNJZdLrRtzKQQmDg2ISrtmHi6H36YtFZhC-dv3z62FLbaIm2BTOqPbbRKt4-3tY0wSG0ZLxgv7ye7w9d3vr_8njJevDFeAuPi7V_O348fTBcrgNFrG9vZBWc8Dyw_2nl6vF-kyHlJQ7y73p2-4LIs9-AnC64FQspI2yVRqxskSdNj8yMwcaqnbvTOYjLIxrtklB5t7DFgYNsUrtoYaNwwGqktyNpNca6NRVT0rMfRyIZqxLappBvSKprXNK9vNGW8kBTr5yHjRX3foSzzw9ENozbo4eltNM6jB4WDY_mJ8aKPcQxUd35m_Nw5VTsT1853jJ__ZPz89KIuv-1yeVkggX9SZFlepbfadkzsYU71HjsOaCMYHSKE3k1GQY2AtjEuoAJt4QERYPnhP_DK32uQH5g4Bjf5Bol9Yp8xsd_QB_6XKGbcXuVFhsbrMRIi4vBAMIAM2O4IPyP-34Fbvs9Qo9F4QYi9DqADSGilCQijCzrqC67hu7YNgnUW75SbGeH8ByGkR5C-myjbQDbEpQWH2OPtPXfrIuXfOBu0Qo-KmESmM2vXj2H9egPZxEkamAJCIwNSaEEP2kgP0S3RUgNZwzP08oIgYfQ4etdgCI6Y1mqro3aWiE5Ubr0bFnduGIiyhiAipm7T5ETiE6fgBkxC9Np2yVXHPlEy9LNmiIPXXjc9PEOcvAVtowMJx7s5VXN5XCFctJwXbJsu0r7LYsZkDS89wtX5H9K7ySrKLDpQ3o2Pl97NZ3WNd4H-MbmI4dPXnEhCiVAbqacIz3CdwZ4xGT226Alp6x49zrorV6oSqhSlXGG12W1Euc3TYrvqK1Woomx3YsdFXm5E2xRlkW9Tud2otNhk6UpXPOVZmvFsI3iW5Wtsi51QohBcqlpkOctSHKQ2a2MuA6l6pUOYsCrKkm9WRtZowvx3wfln_6JmmJ9WvqJLST11gWUpiSd8PhN1NFg99Lyrd7YzNxKc8zHAzyUEzhKJkw-mriZvqi99SMd-qteNGxg_k9P7TzJ694pNZPw8JxIYP8-5_BUAAP__G2suEA">