[flext] ARM Linux crash unless -O0 used

[Jamie Bullock]

Hi,

I'm trying to build a flext library for the Udoo Quad platform, which uses an Ubuntu variant on ARM...

	$ uname -a
	Linux udoo 3.0.35 #1 SMP PREEMPT Mon Mar 3 15:17:07 CET 2014 armv7l armv7l armv7l GNU/Linux

If I compile with -O0, everything works fine. However with O2 or O3 I get a crash as soon as the library loads.

Unfortunately this means getting a useful backtrace is difficult:

	Program received signal SIGBUS, Bus error.
	0x2b09d32c in ?? () from ./ml.pd_linux
	(gdb) bt
	#0  0x2b09d32c in ?? () from ./ml.pd_linux
	#1  0x2ac5d418 in malloc () from /lib/arm-linux-gnueabi/libc.so.6
	#2  0x00000008 in ?? ()
	#3  0x00000008 in ?? ()
	Backtrace stopped: previous frame identical to this frame (corrupt stack?)
 
Any ideas?

Jamie