Question

In Visual C++ 2008, I want to “catch” an exception generated as shown here:

try {
    int foo = 20;
    ::fgetpos(0, (fpos_t*)&foo);
}
//...

Here are adjustments I’ve made to attempt a successful catch:

1. SEH is activated (/eha)
2. I’ve added a catch(…)
3. I’ve added a _set_se_translator vector.
4. I’ve added/adjusted to SEH syntax: __try / __except(EXCEPTION_EXECUTE_HANDLER)

In short, I’ve tried “everything in the book” and I still can’t catch the exception. If I replace the call to ::fgetpos with int hey = foo / 0 then suddenly all of the above techniques work as expected. So the exception I’m dealing with from ::fgetpos is somehow “extra special.”

Can someone explain why this ::fgetpos error seems uncatchable, and how to work around it?

update When executed in the VS IDE, the output window doesn’t name an exception. All it says is this:

Microsoft Visual Studio C Runtime Library has detected a fatal error in MyProgram.exe.

Not very helpful. When I run the console app from the command line, I get a crash dialogue. The “problem details” section of the dialogue includes this information:

Problem Event Name: BEX
Exception Offset:0002fd30
Exception Code: c0000417
Exception Data: 00000000
Additional Information 1:69ad
Additional Information 2:69addfb19767b2221c8e3e7a5cd2f4ae
Additional Information 3:b1ff
Additional Information 4:b1ffca30cadddc78c19f19b6d150997f

Answer 1

Since the code in your dump corresponds to STATUS_INVALID_CRUNTIME_PARAMETER, try _set_invalid_parameter_handler