From f03a649559bf67609f8da5204b2e7b3962174a3f Mon Sep 17 00:00:00 2001
From: Jean-Francois Dockes <jfd@recoll.org>
Date: Tue, 12 Apr 2016 17:26:41 +0200
Subject: [PATCH] execcmd::backtick: check that command is not empty

---
 src/utils/execmd.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/utils/execmd.cpp b/src/utils/execmd.cpp
index 126fb94a..d5df94cc 100644
--- a/src/utils/execmd.cpp
+++ b/src/utils/execmd.cpp
@@ -1007,6 +1007,10 @@ bool ExecCmd::maybereap(int *status)
 // Static
 bool ExecCmd::backtick(const vector<string> cmd, string& out)
 {
+    if (cmd.empty()) {
+        LOGERR(("ExecCmd::backtick: empty command\n"));
+        return false;
+    }
     vector<string>::const_iterator it = cmd.begin();
     it++;
     vector<string> args(it, cmd.end());