Apply the following MySQL's fix:

Bug #46212 safe_process: FATAL ERROR, Unknown option: --nocore
Also fixed mysqld.cc to avoid popup-boxes

mysql-test/lib/My/SafeProcess/safe_process_win.cc

@@ -163,6 +163,7 @@ int main(int argc, const char** argv )
   HANDLE job_handle;
   HANDLE wait_handles[NUM_HANDLES]= {0};
   PROCESS_INFORMATION process_info= {0};
+  BOOL nocore= FALSE;
 
   sprintf(safe_process_name, "safe_process[%d]", pid);
 
@@ -204,6 +205,10 @@ int main(int argc, const char** argv )
         if ((parent_pid= atoi(start)) == 0)
           die("Invalid value '%s' passed to --parent-id", start);
       }
+      else if (strcmp(arg, "--nocore") == 0)
+      {
+        nocore= TRUE;
+      }
       else
         die("Unknown option: %s", arg);
     }
@@ -241,6 +246,11 @@ int main(int argc, const char** argv )
                               &jeli, sizeof(jeli)) == 0)
     message("SetInformationJobObject failed, continue anyway...");
 
+				/* Avoid popup box */
+  if (nocore)
+    SetErrorMode(SEM_FAILCRITICALERRORS | SEM_NOGPFAULTERRORBOX
+                 | SEM_NOOPENFILEERRORBOX);
+
 #if 0
   /* Setup stdin, stdout and stderr redirect */
   si.dwFlags= STARTF_USESTDHANDLES;

sql/mysqld.cc

@@ -2194,8 +2194,7 @@ static void init_signals(void)
   win_install_sigabrt_handler();
   if(opt_console)
     SetConsoleCtrlHandler(console_event_handler,TRUE);
-  else
-  {
+
     /* Avoid MessageBox()es*/
   _CrtSetReportMode(_CRT_WARN, _CRTDBG_MODE_FILE);
   _CrtSetReportFile(_CRT_WARN, _CRTDBG_FILE_STDERR);
@@ -2211,8 +2210,8 @@ static void init_signals(void)
      exception filter is not guaranteed to work in all situation
      (like heap corruption or stack overflow)
    */
-   SetErrorMode(SetErrorMode(0)|SEM_FAILCRITICALERRORS|SEM_NOOPENFILEERRORBOX);
-  }
+  SetErrorMode(SetErrorMode(0) | SEM_FAILCRITICALERRORS
+                               | SEM_NOOPENFILEERRORBOX);
   SetUnhandledExceptionFilter(my_unhandler_exception_filter);
 }