[patch] Fix SIGSEGV in gdb when printing ctor of non-virtual class

[Aleksandar Ristovski]

Ping? Does this patch make any sense?


Aleksandar Ristovski wrote:
> Hello,
> 
> I run into a SIGSEGV crash in gdb when printing value of a non-virtual 
> class' constructor (I got this from IDE asking for a wrong value).
> 
> Example:
> 
> (gdb) print n.Name
> 
> where 'n' is an object of non-virtual class 'Name'.
> 
> 
> The attached tests demonstrate the problem and propose a fix.
> 
> 
> Thanks,
> 
> Aleksandar Ristovski
> QNX Software Systems
> 
> 
> 
> ChangeLog:
> 
>     * value.c (value_fn_field): Do not dereference if block does not
>     exist.
> 
> 
> testsuite ChangeLog:
> 
>     * gdb.cp/cppeval.exp: New test.
>     * gdb.cp/cppeval.cc: New test case to accompany cppeval.exp.
>