Forgot that ifort needs argv to stay alive.

[simgrid.git] / src / smpi / internals / smpi_global.cpp

diff --git a/src/smpi/internals/smpi_global.cpp b/src/smpi/internals/smpi_global.cpp
index 5e59e06..84c818a 100644 (file)
--- a/src/smpi/internals/smpi_global.cpp
+++ b/src/smpi/internals/smpi_global.cpp
@@ -13,6 +13,7 @@
 #include "src/smpi/include/smpi_actor.hpp"
 #include "xbt/config.hpp"
 
+#include <algorithm>
 #include <cfloat> /* DBL_MAX */
 #include <dlfcn.h>
 #include <fcntl.h>
@@ -426,12 +427,16 @@ typedef void (*smpi_fortran_entry_point_type)();
 
 static int smpi_run_entry_point(smpi_entry_point_type entry_point, std::vector<std::string> args)
 {
-  char noarg[]   = {'\0'};
-  int argc = args.size();
-  char** argv = new char*[argc + 1];
-  for (int i = 0; i != argc; ++i)
-    argv[i] = args[i].empty() ? noarg : xbt_strdup(&args[i].front());
-  argv[argc] = nullptr;
+  // copy C strings, we need them writable
+  std::vector<char*>* args4argv = new std::vector<char*>(args.size());
+  std::transform(begin(args), end(args), begin(*args4argv), [](const std::string& s) { return xbt_strdup(s.c_str()); });
+
+  // take a copy of args4argv to keep reference of the allocated strings
+  const std::vector<char*> args2str(*args4argv);
+  int argc = args4argv->size();
+  args4argv->push_back(nullptr);
+  char** argv = args4argv->data();
+
   simgrid::smpi::ActorExt::init(&argc, &argv);
 #if SMPI_IFORT
   for_rtl_init_ (&argc, argv);
@@ -445,11 +450,12 @@ static int smpi_run_entry_point(smpi_entry_point_type entry_point, std::vector<s
 
 #if SMPI_IFORT
   for_rtl_finish_ ();
+#else
+  for (char* s : args2str)
+    xbt_free(s);
+  delete args4argv;
 #endif
 
-  for (int i = 0; i != argc; ++i)
-    xbt_free(argv[i]);
-  xbt_free(argv);
   if (res != 0){
     XBT_WARN("SMPI process did not return 0. Return value : %d", res);
     if (smpi_exit_status == 0)