clang-format crashes while trying to format file

[StMartin81]

to_string_helper.h.txt

When I try to format the attached file with clang-format (21.1.7) clang-format will crash:

clang-format -i -Werror to_string_helper.h

[llvmbot]

@llvm/issue-subscribers-clang-format

Author: None (StMartin81)

Details

[to_string_helper.h.txt](https://github.com/user-attachments/files/24312300/to_string_helper.h.txt)

When I try to format the attached file with clang-format (21.1.7) clang-format will crash:

clang-format -i -Werror to_string_helper.h