From 4707d0823e2e4eada593c6e6786494968a08257e Mon Sep 17 00:00:00 2001
From: Simon Tatham <anakin@pobox.com>
Date: Thu, 1 Feb 2001 11:35:15 +0000
Subject: [PATCH] Avoid mallocing zero bytes in the event log Copy processing,
 which was apparently a problem for compilers other than Visual C. Thanks to
 Roman Pompejus for pointing it out.

[originally from svn r918]
---
 windlg.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/windlg.c b/windlg.c
index fb5740f5..d2ca6c0d 100644
--- a/windlg.c
+++ b/windlg.c
@@ -66,6 +66,11 @@ static int CALLBACK LogProc (HWND hwnd, UINT msg,
                 int *selitems;
                 selcount = SendDlgItemMessage(hwnd, IDN_LIST,
                                               LB_GETSELCOUNT, 0, 0);
+                if (selcount == 0) {   /* don't even try to copy zero items */
+                    MessageBeep(0);
+                    break;
+                }
+                    
                 selitems = smalloc(selcount * sizeof(int));
                 if (selitems) {
                     int count = SendDlgItemMessage(hwnd, IDN_LIST,