--- cscope-15.5.orig/src/main.c
+++ cscope-15.5/src/main.c
@@ -330,9 +330,31 @@
 	}
 
 	/* create the temporary file names */
-	pid = getpid();
-	(void) sprintf(temp1, "%s/cscope%d.1", tmpdir, pid);
-	(void) sprintf(temp2, "%s/cscope%d.2", tmpdir, pid);
+        do {
+                char *tempfile = tempnam(tmpdir, "cscope1");
+                if (!tempfile) {
+                        fputs ("Can't create tempfile\n", stderr);
+                        exit (1);
+                }
+                if (strlen(tempfile) >= sizeof(temp1)) {
+                        fputs ("TMPDIR path is too long\n", stderr);
+                        exit(1);
+                }
+                strncpy (temp1, tempfile, sizeof (temp1));
+        } while (open (temp1, O_CREAT|O_EXCL|O_WRONLY, 0600) < 0);
+        do {
+                char *tempfile = tempnam(tmpdir, "cscope2");
+                if (!tempfile) {
+                        fputs ("Can't create tempfile\n", stderr);
+                        exit (1);
+                }
+                if (strlen(tempfile) >= sizeof(temp2)) {
+                        fputs ("TMPDIR path is too long\n", stderr);
+                        exit(1);
+                }
+                strncpy (temp2, tempfile, sizeof (temp2));
+        } while (open (temp2, O_CREAT|O_EXCL|O_WRONLY, 0600) < 0);
+
 
 	/* if running in the foreground */
 	if (signal(SIGINT, SIG_IGN) != SIG_IGN) {