From: Julian Seward <jseward@acm.org>
Date: Mon, 7 Sep 2015 19:40:20 +0000 (+0000)
Subject: Make sure the result value of count_from_Status is defined.
X-Git-Tag: svn/VALGRIND_3_11_0~18
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=30b07b56860bd04ea8a069b0ce2d6b258597b0cf;p=thirdparty%2Fvalgrind.git

Make sure the result value of count_from_Status is defined.
Fixes #330147.  [Unverified!]


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@15639
---

diff --git a/mpi/libmpiwrap.c b/mpi/libmpiwrap.c
index 06e089086f..cae725b868 100644
--- a/mpi/libmpiwrap.c
+++ b/mpi/libmpiwrap.c
@@ -417,6 +417,7 @@ static __inline__ Bool count_from_Status( /*OUT*/int* recv_count,
    int err = PMPI_Get_count(status, datatype, &n);
    if (cONFIG_DER) VALGRIND_ENABLE_ERROR_REPORTING;
    if (err == MPI_SUCCESS) {
+      VALGRIND_MAKE_MEM_DEFINED(&n, sizeof(n));
       *recv_count = n;
       return True;
    } else {