[gs-devel] t_struct ref from a NULL pointer xefitra

[Igor V. Melichev]

Alex,

> Does anybody know whether it OK to create a t_struct ref from a NULL
> pointer ?

Not OK - you answered this with your second statement :

> do_execstack() applies gs_struct_type_name_string() to the reference
> which SEGV when the ref->value is NULL.

I think when the right way to fix is : 

if (internal_accum)
      make_istruct(esp, 0, pdev);
else
       make_null(esp);

, but I'm not sure how the subsequent code will handle the null.

Igor.


----- Original Message ----- 
From: "Alex Cherepanov" <alexcher at quadnet.net>
To: "gs-devel" <gs-devel at ghostscript.com>
Sent: Tuesday, October 30, 2007 5:45 PM
Subject: [gs-devel] t_struct ref from a NULL pointer xefitra


> Does anybody know whether it OK to create a t_struct ref from a NULL
> pointer ?
> 
> pattern_paint_prepare() creates such a ref but
> do_execstack() applies gs_struct_type_name_string() to the reference
> which SEGV when the ref->value is NULL.
> 
> 
> 
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