[Issue 19331] New: std.regex.internal.ir.SmallFixedArray.toHash is ignored because it's non-const

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19331

          Issue ID: 19331
           Summary: std.regex.internal.ir.SmallFixedArray.toHash is
                    ignored because it's non-const
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: phobos
          Assignee: nobody at puremagic.com
          Reporter: n8sh.secondary at hotmail.com

std.regex.internal.ir.SmallFixedArray defines a non-const `toHash` function
that is ignored by TypeInfo.getHash due to not being const.

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