Re: [ft-devel] ftjam segfault building with GCC 4.2

[Ismail Dönmez]

On Saturday 09 June 2007 22:59:54 Ryan Hill wrote:
> Building ftjam with GCC 4.2 using -O2 optimizations fails with a
> segfault in jam0.  This is caused by a violation of strict-aliasing
> rules which GCC 4.2 assumes are followed with optimization levels of -O2
> and above.  It can be worked around with -fno-strict-aliasing.  All jam
> implementations appear to be affected, including Perforce jam, ftjam,
> and Boost.Jam.

You should note that gcc 4.2 has an ugly strict aliasing bug in itself [0]. 
Not sure if the jam case is related though.

[0] http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30252

-- 
Perfect is the enemy of good

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