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-rw-r--r--common/Memtype.v3
1 files changed, 3 insertions, 0 deletions
diff --git a/common/Memtype.v b/common/Memtype.v
index 40e03a38..f7635816 100644
--- a/common/Memtype.v
+++ b/common/Memtype.v
@@ -917,6 +917,9 @@ Axiom perm_extends:
Axiom valid_access_extends:
forall m1 m2 chunk b ofs p,
extends m1 m2 -> valid_access m1 chunk b ofs p -> valid_access m2 chunk b ofs p.
+Axiom valid_pointer_extends:
+ forall m1 m2 b ofs,
+ extends m1 m2 -> valid_pointer m1 b ofs = true -> valid_pointer m2 b ofs = true.
(** * Memory injections *)