X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/63dae9fee48b67ed8302130aa84c8a54cd42241b..3f367762081b50ecd16c09ef850e2daa823a99a0:/src/s4u/s4u_Link.cpp

diff --git a/src/s4u/s4u_Link.cpp b/src/s4u/s4u_Link.cpp
index 65d544b48d..2e2a3ba652 100644
--- a/src/s4u/s4u_Link.cpp
+++ b/src/s4u/s4u_Link.cpp
@@ -37,10 +37,12 @@ Link* Link::by_name(const std::string& name)
 
 kernel::resource::LinkImpl* Link::get_impl() const
 {
-  xbt_assert(
-      get_sharing_policy() != SharingPolicy::SPLITDUPLEX,
-      "Impossible to get a LinkImpl* from a Split-Duplex link. You should call this method to each UP/DOWN member");
-  return dynamic_cast<kernel::resource::LinkImpl*>(pimpl_);
+  auto* link_impl = dynamic_cast<kernel::resource::LinkImpl*>(pimpl_);
+  xbt_assert(link_impl != nullptr, "Impossible to get a LinkImpl* from link. %s.",
+             (get_sharing_policy() == SharingPolicy::SPLITDUPLEX
+                  ? "For a Split-Duplex link, you should call this method to each UP/DOWN member"
+                  : "Please report this bug"));
+  return link_impl;
 }
 
 Link* Link::by_name_or_null(const std::string& name)
@@ -195,12 +197,16 @@ Link* Link::set_properties(const std::unordered_map<std::string, std::string>& p
 
 Link* SplitDuplexLink::get_link_up() const
 {
-  return dynamic_cast<kernel::resource::SplitDuplexLinkImpl*>(pimpl_)->get_link_up();
+  const auto* pimpl = dynamic_cast<kernel::resource::SplitDuplexLinkImpl*>(pimpl_);
+  xbt_assert(pimpl, "Requesting link_up from a non split-duplex link: %s", get_cname());
+  return pimpl->get_link_up();
 }
 
 Link* SplitDuplexLink::get_link_down() const
 {
-  return dynamic_cast<kernel::resource::SplitDuplexLinkImpl*>(pimpl_)->get_link_down();
+  const auto* pimpl = dynamic_cast<kernel::resource::SplitDuplexLinkImpl*>(pimpl_);
+  xbt_assert(pimpl, "Requesting link_down from a non split-duplex link: %s", get_cname());
+  return pimpl->get_link_down();
 }
 
 SplitDuplexLink* SplitDuplexLink::by_name(const std::string& name)