From: Victor Stinner <vstinner@python.org>
Date: Mon, 30 Oct 2023 22:33:49 +0000 (+0100)
Subject: gh-90815: Fix mimalloc atomic.h on Windows arm64 (#111527)
X-Git-Tag: v3.13.0a2~270
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=801741ff8155623fe6483971e68f30ff654323bc;p=thirdparty%2FPython%2Fcpython.git

gh-90815: Fix mimalloc atomic.h on Windows arm64 (#111527)

mi_atomic_load_explicit() casts 'p' argument to drop the 'const'
qualifier on Windows arm64 platform. Fix the compiler warning:

    'function': different 'const' qualifiers
    (compiling source file ..\Objects\mimalloc\options.c)
---

diff --git a/Include/internal/mimalloc/mimalloc/atomic.h b/Include/internal/mimalloc/mimalloc/atomic.h
index c6b8146ffdb0..eb8478ceed6a 100644
--- a/Include/internal/mimalloc/mimalloc/atomic.h
+++ b/Include/internal/mimalloc/mimalloc/atomic.h
@@ -195,7 +195,7 @@ static inline uintptr_t mi_atomic_load_explicit(_Atomic(uintptr_t) const* p, mi_
 #else
   uintptr_t x = *p;
   if (mo > mi_memory_order_relaxed) {
-    while (!mi_atomic_compare_exchange_weak_explicit(p, &x, x, mo, mi_memory_order_relaxed)) { /* nothing */ };
+    while (!mi_atomic_compare_exchange_weak_explicit((_Atomic(uintptr_t)*)p, &x, x, mo, mi_memory_order_relaxed)) { /* nothing */ };
   }
   return x;
 #endif