Brendan Shanks : ntdll: Don't release address space on 64-bit macOS.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: c1958ddc7a497c8bdf5e61a3677bc595a77fd389
URL:    https://gitlab.winehq.org/wine/wine/-/commit/c1958ddc7a497c8bdf5e61a3677bc59...

Author: Brendan Shanks <bshanks(a)codeweavers.com>
Date:   Mon Jun 19 20:56:43 2023 -0700

ntdll: Don't release address space on 64-bit macOS.

---

 dlls/ntdll/unix/virtual.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/dlls/ntdll/unix/virtual.c b/dlls/ntdll/unix/virtual.c
index 392ac4d9966..62fc1c9dd1f 100644
--- a/dlls/ntdll/unix/virtual.c
+++ b/dlls/ntdll/unix/virtual.c
@@ -4128,6 +4128,13 @@ static void virtual_release_address_space(void)
     char *base = (char *)0x82000000;
     char *limit = get_wow_user_space_limit();
 
+#if defined(__APPLE__) && !defined(__i386__)
+    /* On 64-bit macOS, don't release any address space.
+     * It needs to be reserved for use by Wow64
+     */
+    return;
+#endif
+
     if (limit > (char *)0xfffff000) return;  /* 64-bit limit, nothing to do */
 
     if (limit > base)