From 0b278747c78d95f499afe56944373d873d0d5430 Mon Sep 17 00:00:00 2001
From: Matthew Parkinson <mattpark@microsoft.com>
Date: Wed, 18 Mar 2020 14:49:02 +0000
Subject: [PATCH] Pal_linux mprotect bug fix

When simulating decommit on Linux enable pages
before zeroing.
---
 src/pal/pal_posix.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/pal/pal_posix.h b/src/pal/pal_posix.h
index 4c3a842..e15a63f 100644
--- a/src/pal/pal_posix.h
+++ b/src/pal/pal_posix.h
@@ -76,15 +76,15 @@ namespace snmalloc
       SNMALLOC_ASSERT(
         is_aligned_block<OS_PAGE_SIZE>(p, size) || (zero_mem == NoZero));
 
-      if constexpr (zero_mem == YesZero)
-        static_cast<OS*>(this)->template zero<true>(p, size);
-
 #ifdef USE_POSIX_COMMIT_CHECKS
       mprotect(p, size, PROT_READ | PROT_WRITE);
 #else
       UNUSED(p);
       UNUSED(size);
 #endif
+
+      if constexpr (zero_mem == YesZero)
+        static_cast<OS*>(this)->template zero<true>(p, size);
     }
 
     /**