Re: fprintf (stderr statement is crasing

RaG <>
Tue, 23 Feb 2010 05:01:20 -0800 (PST)
On Feb 23, 4:32 pm, Ismo Salonen <> wrote:

RaG wrote:

On Feb 23, 2:36 pm, "Giovanni Dicanio"
<> wrote:

"RaG" <> ha scritto nel messaggionews:1b201de8-=

fprintf (stderr, "Failed FormatMessage - MessageIndex = <%d>.\n", 0=


but when I run this on vc9(visual studio 2008)
an exception is thrown,How to handle the exception is the issue.
The exception condition will occur definitely but handling that is
what I need.In vc6 same code is working fine.

What is the exception thrown?

The general way of catching exceptions in C++ is by using try/catch, i=


 try {
 catch( const std::exception & e ) {
    std::cerr << "*** ERROR: " << e.what() << std::endl;


exception handling already there, but still the below exception is
First-chance exception at 0x7c91b21a in unittest.exe: 0xC0000005:
Access violation writing location 0x00000010.

My crystall ball tells me that stderr is not open. Is the program a
console application ? Normal windows applications need to freopen stderr


My application is multithreaded windows appilcation,In the worker
thread the below statement
if ( (RetCode = DoFormatMessage ( pMFormat, pVariables, pOutString,
          MaxStringLength, MaxBufferLength, MessageType )) != SUCCESS )
// tprintf (stderr, "Failed FormatMessage - MessageIndex = <%d>.\n",
        fprintf (stderr, "Failed FormatMessage - MessageIndex = <%d>.\n",
0); is crashing the stderr value is Junk , I think "stderr" defaultly
set,The fprint statement is working fine in sample test application .

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