https://sourceforge.net/p/unixtop/patches/22/

diff -u top-3.8beta1/top.c top-3.8beta1-rivoreo-r1/top.c
--- top-3.8beta1/top.c	2008-05-07 11:41:39.000000000 +0800
+++ top-3.8beta1-rivoreo-r1/top.c	2017-01-15 18:32:50.000000000 +0800
@@ -257,14 +258,14 @@
 }
 
 void
-set_signals()
+set_signals(int set_winch)
 
 {
     (void) set_signal(SIGINT, sig_leave);
     (void) set_signal(SIGQUIT, sig_leave);
     (void) set_signal(SIGTSTP, sig_tstop);
 #ifdef SIGWINCH
-    (void) set_signal(SIGWINCH, sig_winch);
+    if(set_winch) set_signal(SIGWINCH, sig_winch);
 #endif
 }
 
@@ -905,7 +906,7 @@
     screen_init();
 
     /* set the signal handlers */
-    set_signals();
+    set_signals(gstate->interactive);
 
     /* longjmp re-entry point */
     /* set the jump buffer for long jumps out of signal handlers */