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From Randy Terbush <>
Subject Re: WWW Form Bug Report: "core dump reported almost every time
Date Mon, 27 May 1996 20:05:55 GMT
> A number of applications were found to have problems, usu off-by-one
> errors, when run with the malloc() in libc-5.3.  
> The new malloc() uses mmap() to allocate the vm, giving a significant
> performance benefit to applications.  The problem is that it is less
> forgiving of free()ing non-malloc()ed or already free()ed vm.
> Tcsh comes to mind as one of the other big apps that broke.
> Have the pool routines been run through a debugging malloc()?

I've been routinely linking with a tool called ElectricFence.
It works by mmaping locked pages before and after a malloced
region. Works quite will. I have not seen *any* problems with 1.1.
(except in my code)

>From Aram's last mail, it sounds as if this may have been a 1.0.x

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