delorie.com/archives/browse.cgi   search  
Mail Archives: cygwin/2001/04/20/11:57:58

Mailing-List: contact cygwin-help AT sourceware DOT cygnus DOT com; run by ezmlm
List-Subscribe: <mailto:cygwin-subscribe AT sources DOT redhat DOT com>
List-Archive: <http://sources.redhat.com/ml/cygwin/>
List-Post: <mailto:cygwin AT sources DOT redhat DOT com>
List-Help: <mailto:cygwin-help AT sources DOT redhat DOT com>, <http://sources.redhat.com/ml/#faqs>
Sender: cygwin-owner AT sources DOT redhat DOT com
Delivered-To: mailing list cygwin AT sources DOT redhat DOT com
Message-ID: <3AE05CFF.9D92E32F@lescher.de>
Date: Fri, 20 Apr 2001 18:00:00 +0200
From: Christian Lescher <christian AT lescher DOT de>
X-Mailer: Mozilla 4.7 [de] (Win95; I)
X-Accept-Language: de
MIME-Version: 1.0
To: "Larry Hall (RFK Partners, Inc)" <lhall AT rfk DOT com>
CC: Lescher Christian <christian DOT lescher AT icn DOT siemens DOT de>,
"'Andrew Markebo'" <flognat AT flognat DOT myip DOT org>,
Troy Noble <troy DOT noble AT channelpoint DOT com>, cygwin AT cygwin DOT com
Subject: Re: AW: DLL function with string result?
References: <4 DOT 3 DOT 1 DOT 2 DOT 20010420103953 DOT 022a2700 AT pop DOT ma DOT ultranet DOT com>

> Yes, there is a general problem when you want to allocate in one DLL made
> by one compiler and de-allocate in another built be another compiler.  In
> this case, the heaps are different.  This is not a Cygwin-specific issue.

I see. Would it be possible then to define a second function within the DLL, let's say freeStr(const char* resStr) which releases the memory
again?

And should Troy Noble's code then work for strings > 64 KB, too? (Currently, I get an access violation, even when not freeing the allocated
memory outside the DLL.)

char*
mallocAndStrCpy (const char* srcStr) {
   if (srcStr == NULL)
      return NULL;
   return strdup(srcStr);
}



--
Want to unsubscribe from this list?
Check out: http://cygwin.com/ml/#unsubscribe-simple

- Raw text -


  webmaster     delorie software   privacy  
  Copyright © 2019   by DJ Delorie     Updated Jul 2019