-fno-strict-aliasing in CWARNFLAGS?
colin.harrison at virgin.net
Wed Feb 3 02:15:09 PST 2010
Michel Dänzer wrote:
> Traditionally, -fno-strict-aliasing was definitely necessary for the X
> server and/or some drivers to work correctly.
Strict aliasing used to be a can'o worms...
and last time I tried strict aliasing for Xming (many moons ago) I fell flat
on my face.
But is series 4 gcc now much better? We shall see (I'm testing with libX11
and libXt unchanged; but
everything else ...most X.Org libs, most clients, pixman, Mesa and
xserver... with strict aliasing)
BTW I use -Os optimisation for all except -O2 for pixman and don't build any
So far I can't see any problems (famous last words, as they will be very
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