[Issue 4850] std.conv.to isn't pure

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=4850
Issue 4850 depends on issue 6151, which changed state.

Issue 6151 Summary: [GC] Make the GC functions weakly pure
https://issues.dlang.org/show_bug.cgi?id=6151

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

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