From b64c627022f5f8175d366a2c8d81e0f05b2cc31c Mon Sep 17 00:00:00 2001
From: Alexandre Julliard <julliard@winehq.org>
Date: Tue, 30 Mar 2004 05:13:35 +0000
Subject: [PATCH] Fixed rounding bug in the stack info calculation when we
 don't have pthread_getattr_np.

---
 loader/pthread.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/loader/pthread.c b/loader/pthread.c
index e750843d3e6..af3386f2f46 100644
--- a/loader/pthread.c
+++ b/loader/pthread.c
@@ -72,8 +72,8 @@ void wine_pthread_init_thread( struct wine_pthread_thread_info *info )
 #else
         /* assume that the stack allocation is page aligned */
         char dummy;
-        size_t page_mask = getpagesize() - 1;
-        char *stack_top = (char *)((unsigned long)(&dummy + page_mask) & ~page_mask);
+        size_t page_size = getpagesize();
+        char *stack_top = (char *)((unsigned long)&dummy & ~(page_size - 1)) + page_size;
         info->stack_base = stack_top - info->stack_size;
 #endif
     }
-- 
2.11.4.GIT