[Issue 12857] Don't allow declaring @system function inside @safe block

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=12857

--- Comment #1 from github-bugzilla at puremagic.com ---
Commits pushed to master at https://github.com/D-Programming-Language/phobos

https://github.com/D-Programming-Language/phobos/commit/0a41eb29e0c34caeedf9530f202f57ce47bddaf5
Supplemental fix for issue 12857

The local template function zeroLen is inferred to @system. So it should not be
placed directly under the @safe unittest body.

https://github.com/D-Programming-Language/phobos/commit/a4a0cb19646fc193558c25862ef5b87d6b81b39d
Merge pull request #2229 from 9rnsr/fix12857

Supplemental fix for issue 12857

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