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-rw-r--r--lib/msan/msan_interface_internal.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/lib/msan/msan_interface_internal.h b/lib/msan/msan_interface_internal.h
index 8641f814bc5f..f4d37d96c5b5 100644
--- a/lib/msan/msan_interface_internal.h
+++ b/lib/msan/msan_interface_internal.h
@@ -96,6 +96,13 @@ u32 __msan_chain_origin(u32 id);
SANITIZER_INTERFACE_ATTRIBUTE
u32 __msan_get_origin(const void *a);
+// Test that this_id is a descendant of prev_id (or they are simply equal).
+// "descendant" here means that are part of the same chain, created with
+// __msan_chain_origin.
+SANITIZER_INTERFACE_ATTRIBUTE
+int __msan_origin_is_descendant_or_same(u32 this_id, u32 prev_id);
+
+
SANITIZER_INTERFACE_ATTRIBUTE
void __msan_clear_on_return();