diff -ur node-v12.3.1/src/node_main.cc node-v12.3.1+JIT/src/node_main.cc
--- node-v12.3.1/src/node_main.cc	2019-05-22 02:21:54.000000000 -1000
+++ node-v12.3.1+JIT/src/node_main.cc	2019-06-18 11:15:25.000000000 -1000
@@ -21,6 +21,12 @@
 
 #include "node.h"
 #include <cstdio>
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
 
 #ifdef _WIN32
 #include <windows.h>
@@ -93,6 +99,50 @@
 }  // namespace per_process
 }  // namespace node
 
+#define CS_OPS_STATUS 0
+#define CS_DEBUGGED   0x10000000
+extern "C" int csops(pid_t pid, unsigned int  ops, void * useraddr, size_t usersize);
+bool get_debugged() {
+  int flags;
+  int rv = csops(getpid(), CS_OPS_STATUS, &flags, sizeof(flags));
+  if (rv==0 && flags&CS_DEBUGGED) return true;
+
+  pid_t pid = fork();
+  if (pid) {
+    int st,rv,i=0;
+    do {
+      usleep(500);
+      rv = waitpid(pid, &st, 0);
+    } while (rv<0 && i++<10);
+    if (rv<0) fprintf(stderr, "Unable to wait for child?\n");
+  } else if (pid == 0) {
+    pid_t ppid = getppid();
+    int rv = ptrace(PT_ATTACHEXC, ppid, 0, 0);
+    if (rv) {
+      perror("Unable to attach to process");
+      exit(1);
+    }
+    for (int i=0; i<100; i++) {
+      usleep(1000);
+      errno = 0;
+      rv = ptrace(PT_DETACH, ppid, 0, 0);
+      if (rv==0) break;
+    }
+    if (rv) {
+      perror("Unable to detach from process");
+      exit(1);
+    }
+    exit(0);
+  } else {
+    perror("Unable to fork");
+  }
+
+  rv = csops(getpid(), CS_OPS_STATUS, &flags, sizeof(flags));
+  if (rv==0 && flags&CS_DEBUGGED) return true;
+
+  return false;
+}
+
 int main(int argc, char* argv[]) {
 #if defined(__POSIX__) && defined(NODE_SHARED_MODE)
   // In node::PlatformInit(), we squash all signal handlers for non-shared lib
@@ -119,6 +168,9 @@
     }
   }
 #endif
+  if (!get_debugged()) {
+      fprintf(stderr, "Unable to obtain CS_DEBUGGED -  I will probably die now.\n");
+  }
   // Disable stdio buffering, it interacts poorly with printf()
   // calls elsewhere in the program (e.g., any logging from V8.)
   setvbuf(stdout, nullptr, _IONBF, 0);