Simplify forced memory reads

Change-Id: I68ea0a46bcaaadb455f2f2cc6e53950e2f26a763
Reviewed-on: https://gerrit.libreoffice.org/79003
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

1 files changed, 3 insertions, 4 deletions

diff --git a/sal/osl/unx/file.cxx b/sal/osl/unx/file.cxx
index 39d9d16334c7..96a9cfecf2b1 100644
--- a/sal/osl/unx/file.cxx
+++ b/sal/osl/unx/file.cxx
@@ -1175,19 +1175,18 @@ oslFileError SAL_CALL osl_mapFile(
              * Pagein, touching first byte of every memory page.
              * Note: volatile disables optimizing the loop away.
              */
-            sal_uInt8 *pData(static_cast<sal_uInt8*>(*ppAddr));
+            sal_uInt8 volatile *pData(static_cast<sal_uInt8*>(*ppAddr));
             size_t nSize(nLength);
 
-            volatile sal_uInt8 c = 0;
             while (nSize > nPageSize)
             {
-                c = c ^ pData[0];
+                pData[0];
                 pData += nPageSize;
                 nSize -= nPageSize;
             }
 
             if (nSize > 0)
-                c = c ^ pData[0];
+                pData[0];
         }
     }