[tor-bugs] #22477 [Core Tor/Tor]: Add -Wl, --large-address-aware to tor-for-Windows build chain

Tor Bug Tracker & Wiki blackhole at torproject.org
Fri Jun 23 17:25:18 UTC 2017


#22477: Add -Wl,--large-address-aware to tor-for-Windows build chain
--------------------------+------------------------------------
 Reporter:  tom           |          Owner:
     Type:  defect        |         Status:  new
 Priority:  Low           |      Milestone:  Tor: 0.3.2.x-final
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:  win32         |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
--------------------------+------------------------------------

Comment (by cypherpunks):

 Replying to [ticket:22477 tom]:
 > This linker flag
 It's a compiler flag.
 > gives a 32 bit application the full 4GB address space,
 App always has it, but not always handles it properly.
 > effectively doubling the randomization provided by ASLR and making heap
 spraying slightly more difficult.
 Things are not so obvious as you think.
 > -
 https://sourceforge.net/p/mingw-w64/mailman/mingw-w64-public/thread/51DF8445.9050105@gmail.com/
 It's a bad design, when linker automatically sets it, but doesn't allow to
 pass it.

 > tor-for-Windows build chain
 Firefox's chain, Tor Browser's chain, TBB's (incl. Expert?) chain, and
 then that. First chain has it, second - inherits, third - only for
 Firefox, fourth - not a TBB Team's problem? And this ticket doesn't
 improve TBB then.
 Somebody should synchronize 'em all.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22477#comment:4>
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