Re: Stack frame incorrect on stack unwinding during exception

From:

=?Utf-8?B?bmlja2R1?= <nickdu@discussions.microsoft.com>

Newsgroups:

microsoft.public.vc.language

Date:

Wed, 25 Oct 2006 09:54:02 -0700

Message-ID:

<DBA9A86A-A933-4791-86CB-E63BEDA68750@microsoft.com>

Just want to add another bit of information. When I changed:

void Validate()
{
    std::string x;
    .
    .
    .
    if (x.length() != 0)
        T_OLEDB_ERR_DEADLY_STR(x.c_str());
}

To:

void Validate()
{
    std::string x;
    .
    .
    .
    try
        {
        if (x.length() != 0)
            T_OLEDB_ERR_DEADLY_STR(x.c_str());
        }
    catch(...)
        {
        throw;
        }
}

The exception during stack unwinding goes away which indicates the stack
frame was correct when destructing my local STL string 'x'.
--
Thanks,
Nick

"nickdu" wrote:

Compiler: Visual Studio .NET 2003 (13.10.3077)

Command line options:

/O2 /D "WIN32" /D "NDEBUG" /D "_LIB" /D "_ATL_ATTRIBUTES" /D "_MBCS" /FD
/EHsc /MT /GS /GR /Yu"stdafx.h" /W3 /c /Wp64 /Zi /TP

CRT: static lib

OS: Windows 2003 Enterprise Server SP1

Threads: Well the app for the most part is single threaded, though there are
multiple threads running (we have a thread doing heartbeat, one watching a
settings file for changes, etc.)

Repro: I've been working on a simpler repro but have not yet produced one.

--
Thanks,
Nick

"Carl Daniel [VC++ MVP]" wrote:

nickdu wrote:

I'm tracking down a problem where we're running into an access
violation while unwinding the stack after throwing a C++ exception.
From my investigation it appears the stack frame is not correctly
setup. Below is an example of what I've observed.

A few more basic questions:

What compiler version are you using? What command line options? Which CRT
version? Which OS? Are there multiple threads involved?

And the biggie - Can you produce a small but complete program that
reproduces the problem (or does this only happen in a gigantic application)?

-cd