[haiku-bugs] Re: [Haiku] #8421: GCC4 precompiled headers are broken
- From: "hamish" <trac@xxxxxxxxxxxx>
- Date: Tue, 27 Mar 2012 02:39:35 -0000
#8421: GCC4 precompiled headers are broken
----------------------------+-----------------------------------------
Reporter: hamish | Owner: bonefish
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: Build System | Version: R1/Development
Resolution: | Keywords: gcc precompiled headers pch
Blocked By: | Blocking:
Has a Patch: 1 | Platform: All
----------------------------+-----------------------------------------
Comment (by hamish):
GCC's PCH implementation relies on mmap honouring the address hint exactly
when MAP_FIXED is not set. POSIX does not require this, so I added added a
workaround in GCC that tests whether the desired region is free using
create_area with B_EXACT_ADDRESS, and then mmaps with MAP_FIXED.
--
Ticket URL: <http://dev.haiku-os.org/ticket/8421#comment:2>
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