tests: add suppression for memcheck

ref. pmem#1262

Author: lukaszstolarczuk

tests/helpers.cmake

@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: BSD-3-Clause
-# Copyright 2018-2021, Intel Corporation
+# Copyright 2018-2022, Intel Corporation
 
 set(DIR ${PARENT_DIR}/${TEST_NAME})
 
@@ -105,7 +105,7 @@ function(execute_common expect_success output_file name)
     elseif(${TRACER} STREQUAL memcheck)
         set(TRACE valgrind --error-exitcode=99 --tool=memcheck --leak-check=full
            --suppressions=${TEST_ROOT_DIR}/ld.supp --suppressions=${TEST_ROOT_DIR}/memcheck-stdcpp.supp --suppressions=${TEST_ROOT_DIR}/memcheck-libunwind.supp
-           --suppressions=${TEST_ROOT_DIR}/memcheck-ndctl.supp)
+           --suppressions=${TEST_ROOT_DIR}/memcheck-ndctl.supp --suppressions=${TEST_ROOT_DIR}/memcheck.supp)
         set(ENV{LIBPMEMOBJ_CPP_TRACER_MEMCHECK} 1)
     elseif(${TRACER} STREQUAL helgrind)
         set(TRACE valgrind --error-exitcode=99 --tool=helgrind --suppressions=${TEST_ROOT_DIR}/helgrind.supp)

tests/memcheck.supp

@@ -0,0 +1,7 @@
+{
+   <string cmp vectorization, libpmemobj-cpp #1262>
+   Memcheck:Addr32
+   fun:__wmemcmp_avx2_movbe
+   fun:compare
+   ...
+}