[Ecls-list] ecl_make_stream_from_fd() && smm_io crashes

[Juan Jose Garcia-Ripoll]

On Sat, Mar 20, 2010 at 8:04 PM, Matthew Mondor <mm_lists at pulsar-zone.net>wrote:

> On Sat, 20 Mar 2010 15:32:56 +0100
> Juan Jose Garcia-Ripoll <juanjose.garciaripoll at googlemail.com> wrote:
>
> > A candidate for failure is when you create a file descriptor with one
> mode
> > and try to fdopen() it with a different mode, as in the following tiny
> > example:[...]
> > Replacing smm_io with smm_input fixes the problem here.
>
> The following (attached) test case works fine however, using mode 0 or
> 07777, except for the close(2) syscall since fclose(3) closes the
> internal file descriptor (which as necessary could be fixed using
> dup(2)/dup2(2) of course).  There the FD is also open O_RDONLY yet the
> fdopen(3) and fgets(3) calls work fine with an "rw" FILE...


The outcome of fdopen() in that case is OS-dependent. OS X definitely
complains if you try to "rw" an O_RDONLY file, to the point that the output
of fdopen() is -1 and you can not change the buffer nor do I/O. But my point
was whether you could test the updated source code and see whether now
ecl_make_stream_from_fd() complains with your input values. Otherwise I am
going to need some more guidance to find out how you trigger the error.

Juanjo

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