use SAL_WARN_UNUSED_RESULT

sal/inc/osl/file.h

@@ -732,7 +732,7 @@ oslFileError SAL_CALL osl_openFile( rtl_uString *pustrFileURL, oslFileHandle *pH
     @see    osl_getFilePos()
 */
 
-oslFileError SAL_CALL osl_setFilePos( oslFileHandle Handle, sal_uInt32 uHow, sal_Int64 uPos );
+oslFileError SAL_CALL osl_setFilePos( oslFileHandle Handle, sal_uInt32 uHow, sal_Int64 uPos ) SAL_WARN_UNUSED_RESULT;
 
 
 /** Retrieve the current position of the internal pointer of an open file.

sal/inc/osl/file.hxx

@@ -988,7 +988,7 @@ public:
         @see getPos()
     */
 
-    inline RC setPos( sal_uInt32 uHow, sal_Int64 uPos )
+    inline RC setPos( sal_uInt32 uHow, sal_Int64 uPos ) SAL_WARN_UNUSED_RESULT
     {
         return (RC) osl_setFilePos( _pData, uHow, uPos );
     }

sal/inc/sal/types.h

@@ -302,7 +302,7 @@ typedef void *                   sal_Handle;
     Compilers that support a construct of this nature will emit a compile
     time warning on unchecked return value.
 */
-#if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
+#if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
 #   define SAL_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
 #else
 #   define SAL_WARN_UNUSED_RESULT

sal/qa/osl/file/osl_File.cxx

@@ -4246,8 +4246,8 @@ namespace osl_File
         //check if is the new file
         File newFile( aTmpName4 );
         newFile.open( osl_File_OpenFlag_Write | osl_File_OpenFlag_Read );
-        newFile.setPos( osl_Pos_End, 0 );
-        //      CPPUNIT_ASSERT( ::osl::FileBase::E_None == nError1 );
+        nError1 = newFile.setPos( osl_Pos_End, 0 );
+        CPPUNIT_ASSERT( ::osl::FileBase::E_None == nError1 );
         sal_uInt64     nFilePointer;
         nError1 = newFile.getPos( nFilePointer );
         CPPUNIT_ASSERT( ::osl::FileBase::E_None == nError1 );