[avr-libc-dev] [bugs #11868] realloc doesn't work correctly on block at end of freelist when growing

[Peter Fuhrmann]

URL:
  <http://savannah.nongnu.org/bugs/?func=detailitem&item_id=11868>

                 Summary: realloc doesn't work correctly on block at end of
freelist when growing
                 Project: AVR C Runtime Library
            Submitted by: tixiv
            Submitted on: Sun 02/06/05 at 01:21
                Category: None
                Severity: 5 - Average
                Priority: 5 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
        Percent Complete: 0%
             Assigned to: None
        Originator Email: address@hidden
             Open/Closed: Open

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Details:

when I alloc a blcok of memory, and then realloc it to a larger size,
__brkval is not updated coorectly, so the next call to malloc overwrites the
first memory block.

I think I found how to fix it, too. I added

cp = (char *)ptr + len;

at line 128 in realloc.c .

It works for me.






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