Re: Bug in g_message() with long lines ?

On 26 Apr 2000, Owen Taylor wrote:

> Guy Slater <> writes:
> > Hi,
> > 
> > I'm just starting to use glib (nice library - I wish I'd known
> > about it a long time ago).
> > 
> > I think there may be a bug in glib when g_message() is used
> > to report long strings.  (Strings here are often DNA,
> > so can be very long).
> > 
> > This one had me puzzled for a while as I was using g_message()
> > to print debugging info.  The problem also seems to be a bit platform
> > specific.
> Well, what you are basically discovering is that the g_log()
> functions are limited to a fixed size buffer. The reason for
> this is that they may be called in out-of-memory situations,
> so can't rely on allocating memory.
> I think this probably could be addressed in a couple of ways:
>  1) Allow memory to be allocated for non-fatal messages, and
>     only use fixed size buffers for fatal messages.


>  2) Try allocating the necessary memory with malloc(), and
>     only if that fails fall back to the static buffer.

yeah, as soon as we got g_try_malloc().

> (Printing out long DNA sequences in user messages seems a little
> odd to me, so I'll mention that g_print(), g_message(), etc,
> really aren't meant as replacements for printf() - they are
> just meant for redirectable logging of errors and warnings.)

i second that, except for g_print() which is in fact a printf() replacement.
it doesn't go through g_logv() and can handle very long strings just fine.

> Regards,
>                                         Owen


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