* sigproc.cc (wait_sig): Make sure that strace is activated on __SIGSTRACE by

calling new strace::activate function.
* strace.cc (strace::activate): Rename from strace::strace.
* strace.h (strace::activate): Define new function.
(strace::strace): Call activate.

winsup/cygwin/strace.cc

@@ -31,7 +31,8 @@ class strace NO_COPY strace;
 
 #ifndef NOSTRACE
 
-strace::strace ()
+void
+strace::activate ()
 {
   if (!dynamically_loaded && !_active && being_debugged ())
     {