From d7cecd3db24e3905a39f458e9202016a5685579a Mon Sep 17 00:00:00 2001 From: Ben Kimock Date: Wed, 15 Nov 2023 19:16:06 -0500 Subject: [PATCH] Let Miri see the AllocId for all TyCtxt allocations --- compiler/rustc_middle/src/mir/interpret/mod.rs | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/compiler/rustc_middle/src/mir/interpret/mod.rs b/compiler/rustc_middle/src/mir/interpret/mod.rs index e360fb3eaaf3c..b87c6885e04c8 100644 --- a/compiler/rustc_middle/src/mir/interpret/mod.rs +++ b/compiler/rustc_middle/src/mir/interpret/mod.rs @@ -525,6 +525,13 @@ impl<'tcx> TyCtxt<'tcx> { self.alloc_map.lock().reserve() } + /// Miri's provenance GC needs to see all live allocations. The interpreter manages most + /// allocations but some are managed by [`TyCtxt`] and without this method the interpreter + /// doesn't know their [`AllocId`]s are in use. + pub fn iter_allocs(self, func: F) { + self.alloc_map.lock().alloc_map.keys().copied().for_each(func) + } + /// Reserves a new ID *if* this allocation has not been dedup-reserved before. /// Should only be used for "symbolic" allocations (function pointers, vtables, statics), we /// don't want to dedup IDs for "real" memory!