Subject: Re: [boost] gil::io "non-review" (was: [gil] Can not open test.jpg)
From: Christian Henning (chhenning_at_[hidden])
Date: 2010-03-23 14:47:25
Hi Phil, let's start at the beginning:
>> Next we clean up and issue an exception. Hope this makes sense.
>
> No, it doesn't make sense. Sorry if I am missing something important.
> Maybe someone else would like to have a look at this code? It's here:
> http://gil-contributions.googlecode.com/svn/trunk/gil_2/boost/gil/extension/io_new/formats/jpeg/read.hpp
> near the start of the file.
>
My understanding setjmp/longjmp is this:
#include <iostream>
#include <csetjmp>
static jmp_buf mark;
void try_something()
{
if( setjmp( mark ))
{
std::cout << "we are back" << std::endl;
}
}
void error_exit()
{
std::cout << "ups we had a problem" << std::endl;
longjmp( mark, 1 );
}
int main( int argc, char* argv[] )
{
try_something();
error_exit();
return 0;
}
When error_exit is called we are jumping back to where setjmp was called before.
Do you agree that's the correct behavior?
Regards,
Christian