This idiocy "if two have distinct single provenance, the result has empty provenance" invalidates real code w/no althttps://twitter.com/bmastenbrook/status/725048588053655554 …
@tyroxxxx Cast is mandated (impl-defined) but not required to be meaningful or round-tripable unless [u]intptr_t is defined (optional).
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@RichFelker oh I did not know that. So it is already as I said. The cast to uintptr_t does not compile because it does not exist. -
@tyroxxxx Exactly. For all other impl-defined ptr/int conversions you an simply define the results as 0/NULL for all inputs.
End of conversation
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