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Date: Sat, 6 Aug 2011 17:38:26 +0200
From: Szabolcs Nagy <>
Subject: Re: New daily reports - debugging alloc.c et al

* Szabolcs Nagy <> [2011-08-06 16:34:33 +0200]:
> 	for (i=j=SIZE_MAX/2; i>0; i/=2) {
> 		if ((*p=mmap(NULL, j, PROT_NONE, MAP_PRIVATE, fd, 0)) == MAP_FAILED)
> 			j -= i/2;
> 		else {

i've just realized that

  for (i=j=SIZE_MAX/2+1; i>=PAGE_SIZE; i/=2) {

is better

(if j is not initialized to a power of 2 then i/=2
does not do proper binary search)

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