[Bug bootstrap/39618] trunk revision 145459 - The configure of libstdc++-v3 hangs while checking for PCH support

[kurt at intricatesoftware dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39618

--- Comment #2 from Kurt Miller kurt at intricatesoftware dot com 2011-11-20 
03:29:51 UTC ---
Created attachment 25864
  -- http://gcc.gnu.org/bugzilla/attachment.cgi?id=25864
PCH Supoort for OpenBSD

Attached is a patch against gcc-4.6.2 which uses brk/sbrk for PCH support.
Since malloc uses mmap the heap is unused and at a fixed address (so long as
PIE is not enabled on gcc). I originally wrote this in 2008 for 4.2 and has
been in use

[Bug bootstrap/39618] trunk revision 145459 - The configure of libstdc++-v3 hangs while checking for PCH support

[kurt at intricatesoftware dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39618

Kurt Miller kurt at intricatesoftware dot com changed:

   What|Removed |Added

 CC||kurt at intricatesoftware
   ||dot com

--- Comment #3 from Kurt Miller kurt at intricatesoftware dot com 2011-11-20 
03:31:22 UTC ---
... since then without issues.

OpenBSD uses random mmap() return addresses. malloc uses mmap and the runtime
linker randomizes shared library load addresses, thus using mmap as a fixed
address is rather difficult on OpenBSD.

[Bug bootstrap/39618] trunk revision 145459 - The configure of libstdc++-v3 hangs while checking for PCH support

[pinskia at gcc dot gnu dot org]

-- 

pinskia at gcc dot gnu dot org changed:

   What|Removed |Added

   Severity|blocker |normal


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39618

[Bug bootstrap/39618] trunk revision 145459 - The configure of libstdc++-v3 hangs while checking for PCH support

[pinskia at gcc dot gnu dot org]

--- Comment #1 from pinskia at gcc dot gnu dot org  2009-04-16 21:07 ---
Sounds like mmap is not working.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39618