prevent <0 errorcodes in MPI_Error_code

[simgrid.git] / src / smpi / bindings / smpi_pmpi.cpp

diff --git a/src/smpi/bindings/smpi_pmpi.cpp b/src/smpi/bindings/smpi_pmpi.cpp
index b6dfc7e..5b9b873 100644 (file)
--- a/src/smpi/bindings/smpi_pmpi.cpp
+++ b/src/smpi/bindings/smpi_pmpi.cpp
@@ -208,6 +208,19 @@ int PMPI_Error_class(int errorcode, int* errorclass) {
   return MPI_SUCCESS;
 }
 
+int PMPI_Error_string(int errorcode, char* string, int* resultlen){
+  if (errorcode<0 || string ==nullptr){
+    return MPI_ERR_ARG;
+  } else {
+    static const char *smpi_error_string[] = {
+      FOREACH_ERROR(GENERATE_STRING)
+    };
+    *resultlen = strlen(smpi_error_string[errorcode]);
+    strncpy(string, smpi_error_string[errorcode], *resultlen);
+    return MPI_SUCCESS;  
+  }
+}
+
 int PMPI_Keyval_create(MPI_Copy_function* copy_fn, MPI_Delete_function* delete_fn, int* keyval, void* extra_state) {
   smpi_copy_fn _copy_fn={copy_fn,nullptr,nullptr};
   smpi_delete_fn _delete_fn={delete_fn,nullptr,nullptr};