On Tue, Jun 09, 2009 at 10:37:29AM -0600, Theo de Raadt wrote: > The fact that you had to modify standards compliant code already in > the tree to make it work indicates a rather major problem.
The changes for stdout / stderr / stdin at least are valid, the standard doesn't guarantee that they can be used that way. ISO C explicitly defines them as "extern FILE *stderr" etc. It is possible to mostly hide the FILE internals and the breakage is not as big as portrait in that thread. It is still quite painful as a lot of programs want to look at the inner workings though. There are a number of open issues with the public API for certain operations mandated by SUS, e.g. the combination of file pointer position for buffered files when sharing the file between processes etc. Joerg
