From: degomme <adegomme@users.noreply.github.com>
Date: Tue, 2 Apr 2019 08:37:49 +0000 (+0200)
Subject: avoid potential segfault when fed nonsense
X-Git-Tag: v3.22.1~34
X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/commitdiff_plain/a470be169558c63bccfb87761d482d90421d979a?ds=sidebyside

avoid potential segfault when fed nonsense
---

diff --git a/src/smpi/bindings/smpi_pmpi.cpp b/src/smpi/bindings/smpi_pmpi.cpp
index 43cbdb8c3a..6b831d51df 100644
--- a/src/smpi/bindings/smpi_pmpi.cpp
+++ b/src/smpi/bindings/smpi_pmpi.cpp
@@ -215,7 +215,7 @@ int PMPI_Error_class(int errorcode, int* errorclass) {
 }
 
 int PMPI_Error_string(int errorcode, char* string, int* resultlen){
-  if (errorcode<0 || string ==nullptr){
+  if (errorcode<0 || errorcode>= MPI_MAX_ERROR_STRING || string ==nullptr){
     return MPI_ERR_ARG;
   } else {
     static const char *smpi_error_string[] = {