1 files changed, 7 insertions, 1 deletions
diff --git a/Src/jobs.c b/Src/jobs.c
index ddd997c49..0464d18d8 100644
--- a/Src/jobs.c
+++ b/Src/jobs.c
@@ -209,7 +209,13 @@ findproc(pid_t pid, Job *jptr, Process *pptr, int aux)
 int
 hasprocs(int job)
 {
-    Job jn = jobtab + job;
+    Job jn;
+
+    if (job < 0) {
+	DPUTS(1, "job number invalid in hasprocs");
+	return 0;
+    }
+    jn = jobtab + job;
 
     return jn->procs || jn->auxprocs;
 }