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Fix miscompilation in comballoc for local allocations #829

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lpw25
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@lpw25 lpw25 commented Sep 14, 2022

Comballoc was happily moving local allocations across the beginning and end of regions. It should definitely not do that. @stedolan is going to add a test case later.

@mshinwell mshinwell added bug Something isn't working backend labels Sep 14, 2022
@mshinwell mshinwell merged commit a046845 into ocaml-flambda:main Sep 14, 2022
gretay-js added a commit to gretay-js/flambda-backend that referenced this pull request Sep 14, 2022
gretay-js added a commit that referenced this pull request Sep 14, 2022
* Apply the fix from #829 to asmcomp

* Turn warnings on in comballoc and make match exhaustive
@lpw25 lpw25 mentioned this pull request Sep 14, 2022
mshinwell pushed a commit that referenced this pull request Sep 14, 2022
mshinwell added a commit to mshinwell/flambda-backend that referenced this pull request Oct 24, 2022
25188da flambda-backend: Missed comment from PR802 (ocaml-flambda#887)
9469765 flambda-backend: Improve the semantics of asynchronous exceptions (new simpler version) (ocaml-flambda#802)
d9e4dd0 flambda-backend: Fix `make runtest` on NixOS (ocaml-flambda#874)
4bbde7a flambda-backend: Simpler symbols (ocaml-flambda#753)
ef37262 flambda-backend: Add opaqueness to Obj.magic under Flambda 2 (ocaml-flambda#862)
a9616e9 flambda-backend: Add build system hooks for ocaml-jst (ocaml-flambda#869)
045ef67 flambda-backend: Allow the compiler to build with stock Dune (ocaml-flambda#868)
3cac5be flambda-backend: Simplify Makefile logic for natdynlinkops (ocaml-flambda#866)
c5b12bf flambda-backend: Remove unnecessary install lines (ocaml-flambda#860)
ff12bbe flambda-backend: Fix unused variable warning in st_stubs.c (ocaml-flambda#861)
c84976c flambda-backend: Static check for noalloc: attributes (ocaml-flambda#825)
ca56052 flambda-backend: Build system refactoring for ocaml-jst (ocaml-flambda#857)
39eb7f9 flambda-backend: Remove integer comparison involving nonconstant polymorphic variants (ocaml-flambda#854)
c102688 flambda-backend: Fix soundness bug by using currying information from typing (ocaml-flambda#850)
6a96b61 flambda-backend: Add a primitive to enable/disable the tick thread (ocaml-flambda#852)
f64370b flambda-backend: Make Obj.dup use a new primitive, %obj_dup (ocaml-flambda#843)
9b78eb2 flambda-backend: Add test for ocaml-flambda#820 (include functor soundness bug) (ocaml-flambda#841)
8f24346 flambda-backend: Add `-dtimings-precision` flag (ocaml-flambda#833)
65c2f22 flambda-backend: Add test for ocaml-flambda#829 (ocaml-flambda#831)
7b27a49 flambda-backend: Follow-up PR#829 (comballoc fixes for locals) (ocaml-flambda#830)
ad7ec10 flambda-backend: Use a custom condition variable implementation (ocaml-flambda#787)
3ee650c flambda-backend: Fix soundness bug in include functor (ocaml-flambda#820)
2f57378 flambda-backend: Static check noalloc (ocaml-flambda#778)
aaad625 flambda-backend: Emit begin/end region only when stack allocation is enabled (ocaml-flambda#812)
17c7173 flambda-backend: Fix .cmt for included signatures (ocaml-flambda#803)
e119669 flambda-backend: Increase delays in tests/lib-threads/beat.ml (ocaml-flambda#800)
ccc356d flambda-backend: Prevent dynamic loading of the same .cmxs twice in private mode, etc. (ocaml-flambda#784)
14eb572 flambda-backend: Make local extension point equivalent to local_ expression (ocaml-flambda#790)
487d11b flambda-backend: Fix tast_iterator and tast_mapper for include functor. (ocaml-flambda#795)
a50a818 flambda-backend: Reduce closure allocation in List (ocaml-flambda#792)
96c9c60 flambda-backend: Merge ocaml-jst
a775b88 flambda-backend: Fix ocaml/otherlibs/unix 32-bit build (ocaml-flambda#767)
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b337cb6 flambda-backend: Fix build_upstream for PR749 (ocaml-flambda#750)
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git-subtree-dir: ocaml
git-subtree-split: 25188da
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