systemc: Add a warning about dont_initialize and cthreads.

Change-Id: I7cc3e571a7a63eed383ad7f897342a539318f961
Reviewed-on: https://gem5-review.googlesource.com/c/13321
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
diff --git a/src/systemc/core/sc_module.cc b/src/systemc/core/sc_module.cc
index 77f0f83..df23de4 100644
--- a/src/systemc/core/sc_module.cc
+++ b/src/systemc/core/sc_module.cc
@@ -338,7 +338,12 @@
 void
 sc_module::dont_initialize()
 {
-    ::sc_gem5::Process::newest()->dontInitialize(true);
+    ::sc_gem5::Process *p = ::sc_gem5::Process::newest();
+    if (p->procKind() == SC_CTHREAD_PROC_) {
+        SC_REPORT_WARNING("(W524) dont_initialize() has no effect for "
+                "SC_CTHREADs", "");
+    }
+    p->dontInitialize(true);
 }
 
 void