[compiler-rt] [Sanitizers][ABI] Remove too strong assert in asan_abi_shim (PR #81696)

[Mariusz Borsa via llvm-commits]

https://github.com/wrotki updated https://github.com/llvm/llvm-project/pull/81696

>From 5ec31f069d1b47ce6eb1218395fc6e96671e4aa5 Mon Sep 17 00:00:00 2001
From: Mariusz Borsa <m_borsa at apple.com>
Date: Tue, 13 Feb 2024 19:33:55 -0800
Subject: [PATCH] [Sanitizers][ABI] Remove too strong assert in asan_abi_shim

Recently we enabled building the shim for arm64_32 arch. On this arch, sizeof(uptr) == sizeof(unsigned long) == 4 - so this assert will fail in runtime.

Relaxing the assert per suggestion on the PR

rdar://122927166
---
 compiler-rt/lib/asan_abi/asan_abi_shim.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/compiler-rt/lib/asan_abi/asan_abi_shim.cpp b/compiler-rt/lib/asan_abi/asan_abi_shim.cpp
index 35c45dff96f6d2..2512abc6412502 100644
--- a/compiler-rt/lib/asan_abi/asan_abi_shim.cpp
+++ b/compiler-rt/lib/asan_abi/asan_abi_shim.cpp
@@ -54,7 +54,7 @@ void *__asan_memmove(void *dest, const void *src, uptr n) {
 
 // Functions concerning RTL startup and initialization
 void __asan_init(void) {
-  static_assert(sizeof(uptr) == 8);
+  static_assert(sizeof(uptr) == 8 || sizeof(uptr) == 4);
   static_assert(sizeof(u64) == 8);
   static_assert(sizeof(u32) == 4);