Bug#489444: gcc-4.3: [arm] occasional but reproducible segfaults in 'install'

[Frans Pop <elendil@planet.nl>]

Some additional information.

This seems to be a very tricky issue.
I can reliably reproduce it when I run debuild as normal user (using 
fakeroot), for example with a loop in debian/rules running 
dh_installdocs:

cnt=1; while :; do echo $cnt; dh_installdocs || echo "Error"; cnt=$((cnt + 
1)); done
1
2
dh_installdocs: command returned error code 11
Error
3
dh_installdocs: command returned error code 11
Error
4
5
6
7
dh_installdocs: command returned error code 11
Error
8

However, if I run debuild as root or using sudo, the segfault no longer 
occurs. But I can also not reproduce the error by just running the 
failing install command directly with fakeroot. The following produces no 
errors:

while :; do fakeroot install -g 0 -o 0 -m 644 -p debian/copyright \
	debian/qcontrol/usr/share/doc/qcontrol/copyright || \
	echo $?; done

The backtrace was created by modifying dh_installdocs to run 'install' 
inside gdb. Installing libc6-dbg did not result in a more usable 
backtrace.

If needed I can provide access to the box that shows the failures.

Cheers,
FJP