Re: [avr-gcc-list] I found a bug in avr-libc-1.20 realloc

[E. Weddington]

Peter wrote:

> Hi all!
>
> I am new to this list. I am working on a projekt with an atmega103 right now,
> and I am using avr-gcc. I must say, the whole toolset works very well for me
> so far.
> I am using ddd with avr-gdb and simulavrxx simulating an atmega128 for 
> debugging right now.
>
> Today I found a bug in libc's realloc function:
> When you shrink a memory block by a size of 4 or more, realloc overwrites the 
> first 2 bytes of the block, and I think it also doesn't add the block to the 
> freelist correctly. Not sure about that yet - I'm not too familier with the 
> implementation right now.
>
>  

You can always view the source code implementation at the avr-libc 
project on Savannah:
<http://savannah.nongnu.org/projects/avr-libc/>

If you happen to find any bugs, it's best to fill out a bug tracker at 
the project page at the link listed above. That way we don't lose track 
of any problems.

Thanks
Eric