<table border="1" cellspacing="0" cellpadding="8">
    <tr>
        <th>Issue</th>
        <td>
            <a href=https://github.com/llvm/llvm-project/issues/73637>73637</a>
        </td>
    </tr>

    <tr>
        <th>Summary</th>
        <td>
            [clang-format] json raw string gets eaten when formatting with RawStringFormats
        </td>
    </tr>

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

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

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

<pre>
    I am using json raw strings in C++ code and would like clang-format to format them together with the source code. This works via the RawStringFormats configuration (see https://reviews.llvm.org/D93528).

Here's a minimal my .clang-format

```
BasedOnStyle: LLVM
RawStringFormats:
  - Language:        Json
    Delimiters:
      - json
    BasedOnStyle: LLVM
```

Here's example code:

```
int main() {
 auto teststring = R"json({"number":1})json";
  return 0;
}
```

both files are also attached. If I run clang-format on that example file, each time it is applies, it eats a bit of the beginning of the json string. When the string is all eaten up, clang-format crashes (in this case on the 5th format)

```
$ clang-format --version
clang-format version 17.0.1 (git://code.qt.io/clang/llvm-project.git 7c67fc21f9bbf5ac83c4cde7eb68a19169377c00)
$ clang-format main.cpp | tee /dev/tty | clang-format | tee /dev/tty | clang-format | tee /dev/tty | clang-format | tee /dev/tty | clang-format
int main() {
  auto teststring = R"json(umber": 1 })json";
  return 0;
}
int main() {
  auto teststring = R"json(r ": 1 })json";
  return 0;
}
int main() {
  auto teststring = R"json( 1 })json";
  return 0;
}
int main() {
  auto teststring = R"json( })json";
  return 0;
}
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.      Program arguments: clang-format
Stack dump without symbol names (ensure you have llvm-symbolizer in your PATH or set the environment var `LLVM_SYMBOLIZER_PATH` to point to it):
0 clang-format    0x00000000004779b8
1  clang-format 0x000000000047577c
2  libpthread.so.0 0x00007f1809918cf0
3 clang-format    0x000000000055ecca
4  clang-format 0x0000000000561694
5  clang-format    0x0000000000563642
6 clang-format    0x0000000000566708
7  clang-format 0x00000000004b71ee
8  clang-format    0x0000000000536e4c
9 clang-format    0x0000000000538e47
10 clang-format 0x000000000053b0f9
11 clang-format    0x000000000053b550
12 clang-format    0x00000000004fe98b
13 clang-format 0x00000000004fda9a
14 clang-format    0x00000000004b4136
15 clang-format    0x00000000004deab3
16 clang-format 0x00000000004b3a27
17 clang-format    0x00000000004b3a64
18 clang-format    0x00000000004b75b2
19 clang-format 0x00000000004b8c57
20 clang-format    0x0000000000422c94
21 clang-format    0x000000000040a5a4
22 libc.so.6       0x00007f1808840d85 __libc_start_main + 229
23 clang-format 0x000000000041c4ae
Segmentation fault (core dumped)
```

This is how it looks in MSYS2:

```
$ clang-format --version
clang-format version 17.0.4
$ clang-format main.cpp | tee /dev/tty | clang-format | tee /dev/tty | clang-format | tee /dev/tty | clang-format | tee /dev/tty | clang-format
int main() {
  auto teststring = R"json(umber": 1 })json";
  return 0;
}
int main() {
  auto teststring = R"json(r ": 1 })json";
  return 0;
}
int main() {
  auto teststring = R"json( 1 })json";
  return 0;
}
int main() {
 auto teststring = R"json(                         })json";
  return 0;
}
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.      Program arguments: C:\\msys64\\mingw64\\bin\\clang-format.exe
Exception Code: 0xC0000005
 #0 0x00007ffa199a3780 (C:\msys64\mingw64\bin\libclang-cpp.dll+0x483780)
 #1 0x00007ffa19ee01b3 (C:\msys64\mingw64\bin\libclang-cpp.dll+0x9c01b3)
 #2 0x00007ffa1b727acd (C:\msys64\mingw64\bin\libclang-cpp.dll+0x2207acd)
 #3 0x00007ffa1bbfcadf (C:\msys64\mingw64\bin\libclang-cpp.dll+0x26dcadf)
 #4 0x00007ffa1b641a82 (C:\msys64\mingw64\bin\libclang-cpp.dll+0x2121a82)
 #5 0x00007ffa1b2ff0e6 (C:\msys64\mingw64\bin\libclang-cpp.dll+0x1ddf0e6)
 #6 0x00007ffa1b2ea531 (C:\msys64\mingw64\bin\libclang-cpp.dll+0x1dca531)
 #7 0x00007ffa1b2e5203 (C:\msys64\mingw64\bin\libclang-cpp.dll+0x1dc5203)
 #8 0x00007ffa1b2e865b (C:\msys64\mingw64\bin\libclang-cpp.dll+0x1dc865b)
 #9 0x00007ffa1b2e5087 (C:\msys64\mingw64\bin\libclang-cpp.dll+0x1dc5087)
#10 0x00007ffa1b2f1c05 (C:\msys64\mingw64\bin\libclang-cpp.dll+0x1dd1c05)
#11 0x00007ffa1b2bbe7d (C:\msys64\mingw64\bin\libclang-cpp.dll+0x1d9be7d)
#12 0x00007ffa1b2bea77 (C:\msys64\mingw64\bin\libclang-cpp.dll+0x1d9ea77)
#13 0x00007ffa1bc4043e (C:\msys64\mingw64\bin\libclang-cpp.dll+0x272043e)
#14 0x00007ffa1b2fe799 (C:\msys64\mingw64\bin\libclang-cpp.dll+0x1dde799)
#15 0x00007ffa1b2ff7c2 (C:\msys64\mingw64\bin\libclang-cpp.dll+0x1ddf7c2)
#16 0x00007ff623219f48 (C:\msys64\mingw64\bin\clang-format.exe+0x9f48)
#17 0x00007ff62321e118 (C:\msys64\mingw64\bin\clang-format.exe+0xe118)
#18 0x00007ff6232112ee (C:\msys64\mingw64\bin\clang-format.exe+0x12ee)
#19 0x00007ff623211406 (C:\msys64\mingw64\bin\clang-format.exe+0x1406)
#20 0x00007ffad8267344 (C:\WINDOWS\System32\KERNEL32.DLL+0x17344)
#21 0x00007ffad94a26b1 (C:\WINDOWS\SYSTEM32\ntdll.dll+0x526b1)
Segmentation fault
```

I also see an even weirder case in Qt Creator, where the raw string delimiters `json(` and `)json` are changed to `pb(` and `)pb`, but unfortunately I'm unable to replicate that outside of Qt Creator.

[clang-format-json-bug.zip](https://github.com/llvm/llvm-project/files/13487369/clang-format-json-bug.zip)

</pre>
<img width="1px" height="1px" alt="" src="http://email.email.llvm.org/o/eJzsWVtv2zoS_jXMyyAGSV0oPeQhsROc7Kan3brYovsSUNRIZquLl6Ti5Pz6BSXZsdzUaR3gLHBwjKKxxZnv43AuHJHSWl02iBckuiLR4kx2btWai6_nK7k-y9r86eIWZA2d1U0JX23bgJEbsM7oprSgG5gTfkX4Fag2R5BNDpu2q3Ko9DcEVcmmPC9aU0sHroXttxXW4NoS3QoNbLRb-Udg284o7IFm8GmlLWxa883Cg5b9-Ee5Wfa8Nz2MBdU2hS47I51uGyA8sYiwcm5tSXBJ-A3hNwYfNG7srKoe6llrSsJvFmkQ8YTwdEbogtDL4f_f0CDhwoKEWje6lhXUTzDbt2BfnMR0_Nf_vJIW8_fN0j1VSIJLuLv797th5HDSfmb9AMA53Mmm7GTZq4yff9i22QoALLDStXZo9vX857z3xfOTH0_gYKYH1uKjrNfVsOg7ihcVdeOglroh_doBEVcju-xcCw6tG4ICSLCAj4TzfoI88YKcN12doSGck-CSEbEgPB3GOQm2QGDQdaYBunvkBX9sRNa6FRS6QgvSIMjKtiCdk2qF-QxuC7gF0zXTIGwbcCvpdnZ7dcLngFKtwOkaQTvQFuR6XWm0fkg7QB9tEjLtoC36WMyw1E3jzR0f9KkxrMAMPq-wGUJ6WBIPWFUeBhvo1h51MitlpF2h9SGsvaK2oKTFYbYIkbdzCEGeHnER4eEU9_z8AY3V20CZjI0jwMSMzpinLrXb5U2fhP91M936H16P8BufROdr035F5WaldiBULArFWZFmWRFJlQQqVDkKzOJEspTFaSCEovR52ocz9BE1U-s1EDEHhwiE3-T4QPiNc0_9w4n4ny71Suy_Fvx7UQ8Mfj3uTyY28P9g_ZPZfp3rw9315fIabJfV2vmM7kowuG5Nvz1Nt45Su1WXzVRbj6F_kAGE32hrO18kbvqNTzeq6nLsU7bPaMik-uaMVDhuNUsn1TfIu3q9q7V0Rmj6wbSlkTVIU3Y1Nv0u8UIYPqv3m2bbObBPddZW0Mh6KB_Y2M4gPLUdrOQDQj_hQUj_gcZv2E9tZ-DD5affoDVgsd-OAZsHbdrGk8ODNEBi6reQ--WXd1fv727_c_3x3quQmPqFWrfeaa4F3VeknS3TBAMA-kh3n1CINEsGSQZT0alcJIQa5DhApbO1WxmU-cy2MzqKioIlNE1Zooqx-AVHyaMIlZKDZHiEPIpZnIaDXATHIeMgDvkgGr8iGQs6Wi6OWZ4JhjjIJa-QBzGG4yKlr0gmGIpx2ekRy4OMFmOZZuwVyCyKxmVn_LjTC0yTbBQNjphe5DId_cPC45BZyIJ4FI2Oi-Yos2AUjY8tfCD5do3EK-yBjMcAYckroiLKxgBh6TH2REUjO38lhzhX2_Dkx50UUhnJrSj3aaR8AsVjn7mXRkkS0jyJ4P7eC91bJ4279xUZfF_Pt3s3P-Y-pkI5Ru4SS19Ghqa8kF3lfGFSrcG-dGH-3A281NX1jb-2sGo3vvWq2vZb_57xbvllyY-3qKf3P-Hf7cnf7ckvsr1G9qPPX6NrGWx5sXGZe7FoTqJ5bZ9sHI7fdVNutj8y3Qxf9oN5ho9jCbl-VLju68d8eC8F-jgf955xuQgPnnuBQrI0lYFIqC81I_-O_Jl5oPVVrqdV6_UsryrCr-hjmHj1XWny-GyCj0hZFpyMnyqvPsHn-_iZ4EKq_GR8zqnXnxAEE4KsUDIvTieIc68_IQgnBHHIZMJPJ2Dc608IogkBLwqK8ckELM-9_oQgnhKgjAL2BgLl9ScE4oAg4vT0IGK58voTguSAIImj7C0EXn9CkB5aQBPxJgtoIvYOBAJGD5zMFI3e4mSvPyFgU4IsQ3F6orE89foTAn5AgFK8ZYlSrz8hmGayCmkY4OmJJrjXnxCEBz5AkaZv8YHXnxB8l8lCnV4qfCYLxScEe5kc84CztAiTnyH4bgfqq3URJhN0cYCOjJ2O7pUn6MkBOuP4U-59Ed0rT9DTQ_SQ_lQRfRk9pPE-Ot_P3jzhsQjCcA_98-3vi_eflySaL5-swzrgJJr_8_rj79d3AZ8t7u4GVK81gd3P2TwNJY8z9jLsl-Wn63c9bOPyqtoFSeRVdpjfv5UceQe5HQ6TLSLIBvABG9igNjma4VxWN_AvB3OD0rWG8DlsVmiGFur5dgTy3eE9kJhuj8Nj2rddnnHsAv0Tg6BWsikx9y0diek6-054nfV_55B1DrqmaI3rGumweoJbwkUNXSOzCj2AwXWllXQ4nHa3nbM6R2iLvXlPrj9IdLXv7nM_sfOsK2d_6DWJFoQnv9xm9ifzhN-wIExEEKfbg-QXKbZuOssvgjwNUnmGF0xQxgQLaHC2ukh5wlQqWMpEwLK8iFQQyJhnIS9EkRb8TF9w6ms9TxgLIhrMeJQokbMAQ8kLxhgJKdZSV7u7oLO-Eb4QQRyIs0pmWNn-FozzySsW5yRanJmL3rysKy0JaaWte75UOnPaVf0N2kQxWhxemEGJzo7XAJsVNuOpvvND_TXY4W3RWWeqi9Mb_N60_wUAAP__NcsVWw">