Bug 12366 – Range violation in compile-time regex

import std.regex; void main() { auto re = ctRegex!(`^((?=(xx+?)\2+$)((?=\2+$)(?=(x+)(\4+$))\5){2})*x?$`); "xxxxxxxx".match(re); } This program crashes at runtime: [email protected](3108): Range violation

Commits pushed to master at https://github.com/D-Programming-Language/phobos https://github.com/D-Programming-Language/phobos/commit/44445cfb9e62640caf5beb1cb0444565534da342 Fix issue 12366 Range violation in compile-time regex Back-references are not a part of "quick-test" in R-T version, neither should they be in C-T. https://github.com/D-Programming-Language/phobos/commit/f77ee1a0150e8c6f7284d4b8535730f457e7d71a Merge pull request #2171 from DmitryOlshansky/issue-12366 Fix issue 12366 Range violation in compile-time regex