C++ :: Stack array bounds write purify error with exceptions

[Andrew Pinski]

On Jan 5, 2005, at 12:48 PM, Joe Buck wrote:

> On Wed, Jan 05, 2005 at 08:23:50AM -0500, Frank Ch. Eigler wrote:
>> Raghu Annaluru <raghu_annaluru@yahoo.com> writes:
>>
>>> We are facing a purify "Stack array bounds write"
>>> error with exceptions. [...]
>>
>> As far as I know, Purify has always needed some adjustments to work
>> with different versions of gcc.  Since purify is proprietary software,
>> it is difficult to give any useful advice, except that you could
>> contact its author.
>
> Purify operates directly on the assembly code, so if it detects a stack
> array bounds write, it is quite likely to be a bug in gcc (though it 
> might
> be the type of bug that matters only in embedded systems, where a 
> seperate
> stack is not used for interrupts).  I recall that the author of 
> valgrind
> has found very similar bugs in several versions of gcc, though I don't
> know if this one is among them.

No this is not a GCC bug, purify does not work well with dwarf
exceptions.

See <http://gcc.gnu.org/ml/gcc-bugs/1999-01/msg00240.html> which
explains clearly this is not a bug in GCC but a bug in purify.

-- Pinski