Define Pulse.Lib.Pervasives._zero_for_deref - #4120
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tahina-pro merged 1 commit intoMar 20, 2026
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Mar 19, 2026
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This PR replicates FStarLang/pulse#592 on F*, which now embeds Pulse.
This PR cuts the extraction dependency on Low* KrmlLib for extraction of Pulse code to C or Rust via Karamel.
So far Pulse extraction was relying on
C._zero_for_derefto extract access to references using BufLoad from the Karamel AST: using this index instead of 0 makes Karamel turn an array access into a pointer access. ButC._zero_for_derefis defined in KrmlLib, which is written in Low*.This PR replaces
C._zero_for_derefwith a Pulse-specific definition,Pulse.Lib.Pervasives._zero_for_deref, so that verification no longer depends on Low* KrmlLib.This PR has a companion Karamel PR: FStarLang/karamel#685