Use C++11 <random> instead of rand().

[simgrid.git] / teshsuite / mc / dwarf-expression / dwarf-expression.cpp

diff --git a/teshsuite/mc/dwarf-expression/dwarf-expression.cpp b/teshsuite/mc/dwarf-expression/dwarf-expression.cpp
index 5cd9b46..a3c143f 100644 (file)
--- a/teshsuite/mc/dwarf-expression/dwarf-expression.cpp
+++ b/teshsuite/mc/dwarf-expression/dwarf-expression.cpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2014-2017. The SimGrid Team.
+/* Copyright (c) 2014-2019. The SimGrid Team.
  * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
@@ -11,14 +11,17 @@
 #include <cassert>
 #include <cstdlib>
 #include <cstring>
+#include <random>
 
-#include "src/mc/mc_private.h"
+#include "src/mc/mc_private.hpp"
 
 #include "src/mc/ObjectInformation.hpp"
 #include "src/mc/Type.hpp"
 #include "src/mc/Variable.hpp"
 #include "src/mc/remote/RemoteClient.hpp"
 
+static std::default_random_engine rnd_engine;
+
 static simgrid::mc::RemoteClient* process;
 
 static
@@ -51,17 +54,20 @@ void basic_test(simgrid::dwarf::ExpressionContext const& state) {
 
   Dwarf_Op ops[60];
 
-  uintptr_t a = rand();
-  uintptr_t b = rand();
+  uintptr_t a = rnd_engine();
+  uintptr_t b = rnd_engine();
 
   simgrid::dwarf::ExpressionStack stack;
 
+  bool caught_ex = false;
   try {
     ops[0].atom = DW_OP_drop;
     simgrid::dwarf::execute(ops, 1, state, stack);
-    fprintf(stderr,"Exception expected");
+  } catch (simgrid::dwarf::evaluation_error& e) {
+    caught_ex = true;
   }
-  catch(simgrid::dwarf::evaluation_error& e) {}
+  if (not caught_ex)
+    fprintf(stderr, "Exception expected");
 
   ops[0].atom = DW_OP_lit21;
   simgrid::dwarf::execute(ops, 1, state, stack);
@@ -158,26 +164,26 @@ int main(int argc, char** argv) {
   basic_test(state);
 
   for(int i=0; i!=100; ++i) {
-    uintptr_t a = rand();
-    uintptr_t b = rand();
+    uintptr_t a = rnd_engine();
+    uintptr_t b = rnd_engine();
     assert(eval_binary_operation(state, DW_OP_plus, a, b) == (a + b));
   }
 
   for(int i=0; i!=100; ++i) {
-    uintptr_t a = rand();
-    uintptr_t b = rand();
+    uintptr_t a = rnd_engine();
+    uintptr_t b = rnd_engine();
     assert(eval_binary_operation(state, DW_OP_or, a, b) == (a | b));
   }
 
   for(int i=0; i!=100; ++i) {
-    uintptr_t a = rand();
-    uintptr_t b = rand();
+    uintptr_t a = rnd_engine();
+    uintptr_t b = rnd_engine();
     assert(eval_binary_operation(state, DW_OP_and, a, b) == (a & b));
   }
 
   for(int i=0; i!=100; ++i) {
-    uintptr_t a = rand();
-    uintptr_t b = rand();
+    uintptr_t a = rnd_engine();
+    uintptr_t b = rnd_engine();
     assert(eval_binary_operation(state, DW_OP_xor, a, b) == (a ^ b));
   }