[Bug sanitizer/99814] regexec fails with -fsanitize=address

[stefansf at linux dot ibm.com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99814

--- Comment #4 from Stefan Schulze Frielinghaus <stefansf at linux dot ibm.com> 
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Thanks for the pointers!  I reported it upstream in issue
[1390](https://github.com/google/sanitizers/issues/1390)