From 053b859a6f125bbe1343a568a062a4cf499e4f69 Mon Sep 17 00:00:00 2001
From: kichik <kichik@212acab6-be3b-0410-9dea-997c60f758d6>
Date: Thu, 12 Apr 2007 20:24:13 +0000
Subject: [PATCH] fixed bug #774966 - CopyFiles return value not working on NT4
 Sp6

git-svn-id: https://svn.code.sf.net/p/nsis/code/NSIS/trunk@5063 212acab6-be3b-0410-9dea-997c60f758d6
---
 Source/exehead/exec.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Source/exehead/exec.c b/Source/exehead/exec.c
index 0da321fc..408662d5 100644
--- a/Source/exehead/exec.c
+++ b/Source/exehead/exec.c
@@ -1064,6 +1064,19 @@ static int NSISCALL ExecuteEntry(entry *entry_)
         char *buf0=GetStringFromParm(0x00);
         char *buf1=GetStringFromParm(0x11);
         log_printf3("CopyFiles \"%s\"->\"%s\"",buf0,buf1);
+
+        if (!file_exists(buf0))
+        {
+          // workaround for bug #774966
+          //
+          // on nt4, SHFileOperation silently fails if the source
+          // file doesn't exist. do a manual check instead.
+
+          update_status_text(LANG_COPYFAILED,0);
+          exec_error++;
+          break;
+        }
+
         op.hwnd=g_hwnd;
         op.wFunc=FO_COPY;
         buf0[mystrlen(buf0)+1]=0;