server: Print a trace when sending a signal to a thread.
diff --git a/server/ptrace.c b/server/ptrace.c
index 37c15c0..14a29f5 100644
--- a/server/ptrace.c
+++ b/server/ptrace.c
@@ -262,6 +262,8 @@
             thread->unix_tid = -1;
         }
     }
+    if (debug_level && ret != -1)
+        fprintf( stderr, "%04x: *sent signal* signal=%d\n", thread->id, sig );
     return (ret != -1);
 }