CVE: CVE-2019-19925
Upstream-Status: Backport
Signed-off-by: Ross Burton <ross.burton@intel.com>

From e92580434d2cdca228649d32f76167492de4f512 Mon Sep 17 00:00:00 2001
From: "D. Richard Hipp" <drh@hwaci.com>
Date: Thu, 19 Dec 2019 15:15:40 +0000
Subject: [PATCH] Fix the zipfile extension so that INSERT works even if the
 pathname of the file being inserted is a NULL.  Bug discovered by the
 Yongheng and Rui fuzzer.

FossilOrigin-Name: a80f84b511231204658304226de3e075a55afc2e3f39ac063716f7a57f585c06
---
 shell.c   | 1 +
 sqlite3.c | 4 ++--
 sqlite3.h | 2 +-
 3 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/shell.c b/shell.c
index 053180c..404a8d4 100644
--- a/shell.c
+++ b/shell.c
@@ -5827,6 +5827,7 @@ static int zipfileUpdate(
 
     if( rc==SQLITE_OK ){
       zPath = (const char*)sqlite3_value_text(apVal[2]);
+      if( zPath==0 ) zPath = "";
       nPath = (int)strlen(zPath);
       mTime = zipfileGetTime(apVal[4]);
     }
-- 
2.24.1