[avr-libc-dev] #bug 27235 issue 2

[Boyapati, Anitha]

(Referring to https://savannah.nongnu.org/bugs/?27235)

Do we have an English version of the page referred in the bug report? 
http://www.mikrocontroller.net/topic/147150 (The site embdev.net has a 
different forum) 

Specifically, I am trying to understand 2nd issue reported here.

[quote]

2. If there is RAM for the Heap, which has been allocated and freed before, the 
next allocating goes from upper to lower addresses. This will IMHO be bad for 
realloc calls, because the memory behind will most likely be used, resulting in 
gaps if the memory size decreases and memory copies if increased."

[/quote]

How does allocation happen from upper to lower addresses? From what I 
understand, malloc resorts to heap expansion using __brkval which is the 
largest address not allocated so far. Thus it appears that allocation in a heap 
happens from lower to upper address. 

Let me know if I got something wrong.


Anitha