id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
11314,boost::gil::jpeg_read_dimensions(const char*) does not throw exceptions as it should,anonymous,Stefan Seefeld,"boost::gil::jpeg_read_dimensions(const char*) is documented as followed (resides in .../boost/gil/extension/io/jpeg_io.hpp):

{{{
/// \ingroup JPEG_IO
/// \brief Returns the width and height of the JPEG file at the specified location.
/// Throws std::ios_base::failure if the location does not correspond to a valid JPEG file
}}}

However, it does not always throw an exception. Instead it prints an error message and exits the program, which is how libjpeg by default handle its errors. 

See the following code:

{{{
#include <iostream>

#include <boost/gil/extension/io/jpeg_io.hpp>

using std::cout;
using std::cerr;
using std::endl;
using std::ios_base;

namespace gil = boost::gil;

int main(int argc, char **argv) {
  if(argc != 2) {
    cerr << ""Please supply a file name."" << endl;
    return 1;
  }

  const char *file = argv[1];

  cout << file << "": "" << endl;

  try {
    gil::jpeg_read_dimensions(file);
  } catch(const ios_base::failure &ib_f) {
    cerr << ""what: "" << ib_f.what() << endl;
  } catch(...) {
    cerr << ""caught other exception!"" << endl;
  }

  cout << ""\nDone."" << endl;

  return 0;
}
}}}

I compile it using g++ 4.9.2 using the options

{{{
-std=c++11 -I/usr/local/include -L/usr/local/lib -ljpeg -o bin main.cpp
}}}

on a Mac OS X 10.9.5. 

See these three runs:

{{{
$ ./bin non_existing.jpeg # this file does not exist
non_existing.jpeg: 
what: file_mgr: failed to open file

Done.
}}}

{{{
$ ./bin existing_empty.jpeg # this file exist but is empty
existing_empty.jpeg: 
Empty input file
}}}

{{{
$ ./bin existing_non_jpeg.jpeg # this file exist and is not empty, but is not a jpeg
existing_non_jpeg.jpeg: 
Not a JPEG file: starts with 0x62 0x6c
}}}",Bugs,closed,Boost 1.69,gil USE GITHUB,Boost 1.58.0,Problem,fixed,libjpeg,mateusz@…