Elliott Hughes 533dde4dbf Fix brk/sbrk error checking.
Note that the kernel returns the current break on error or if the requested
break is smaller than the minimum break, or the new break. I don't know where
we got the idea that the kernel could return -1.

Also optimizes the query case.

Also hides an accidentally-exported symbol for LP64.

Change-Id: I0fd6b8b14ddf1ae82935c0c3fc610da5cc74932e
2014-04-25 19:38:33 -07:00
2014-04-25 19:38:33 -07:00
2014-02-18 12:02:37 -08:00
2014-04-22 11:59:26 +01:00
2014-04-25 19:38:33 -07:00
2013-12-12 12:51:08 -08:00
2010-03-08 18:04:02 -08:00
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