commit 3b00401f0f4e2818849121017cf1b9f9b7878215
author Dominic Chen <ddchen@apple.com> Wed Apr 20 17:33:25 2022 -0700
committer Copybara-Service <copybara-worker@google.com> Thu Apr 21 17:25:56 2022 -0700
tree 83e64517f88b1a9bd27cbfc298c414b7062d532d
parent 7f9f0d4874fe41e4c97509f847c010ee4603517e

[scudo] Disable memory tagging on arm64_32

arm64_32 is an ILP32 platform

Differential Revision: https://reviews.llvm.org/D124135

GitOrigin-RevId: fcbca197f2e6e9e13c447ede77f6341721e6c7f7

memtag.h

diff --git a/memtag.h b/memtag.h
index 7578aff..7f14a30 100644
--- a/memtag.h
+++ b/memtag.h
@@ -18,7 +18,8 @@
 
 namespace scudo {
 
-#if (__clang_major__ >= 12 && defined(__aarch64__)) || defined(SCUDO_FUZZ)
+#if (__clang_major__ >= 12 && defined(__aarch64__) && !defined(__ILP32__)) ||  \
+    defined(SCUDO_FUZZ)
 
 // We assume that Top-Byte Ignore is enabled if the architecture supports memory
 // tagging. Not all operating systems enable TBI, so we only claim architectural
@@ -57,7 +58,7 @@
 
 #endif
 
-#if __clang_major__ >= 12 && defined(__aarch64__)
+#if __clang_major__ >= 12 && defined(__aarch64__) && !defined(__ILP32__)
 
 #if SCUDO_LINUX