internal compiler error: Illegal instruction

Binary package hint: gcc-4.1

To reproduce: try building madwifi-0.9.3.1 on feisty.

sune@jadis:~/src/madwifi$ make
Checking requirements... ok.
Checking kernel configuration... ok.
make -C /lib/modules/2.6.20-15-generic/build SUBDIRS=/home/sune/src/madwifi-0.9.3.1 modules
make[1]: Entering directory `/usr/src/linux-headers-2.6.20-15-generic'
  CC [M] /home/sune/src/madwifi-0.9.3.1/ath/if_ath.o
  CC [M] /home/sune/src/madwifi-0.9.3.1/ath/if_ath_pci.o
  LD [M] /home/sune/src/madwifi-0.9.3.1/ath/ath_pci.o
  CC [M] /home/sune/src/madwifi-0.9.3.1/ath_hal/ah_os.o
  HOSTCC /home/sune/src/madwifi-0.9.3.1/ath_hal/uudecode
  UUDECODE /home/sune/src/madwifi-0.9.3.1/ath_hal/i386-elf.hal.o
  LD [M] /home/sune/src/madwifi-0.9.3.1/ath_hal/ath_hal.o
  CC [M] /home/sune/src/madwifi-0.9.3.1/ath_rate/amrr/amrr.o
  LD [M] /home/sune/src/madwifi-0.9.3.1/ath_rate/amrr/ath_rate_amrr.o
  CC [M] /home/sune/src/madwifi-0.9.3.1/ath_rate/onoe/onoe.o
  LD [M] /home/sune/src/madwifi-0.9.3.1/ath_rate/onoe/ath_rate_onoe.o
  CC [M] /home/sune/src/madwifi-0.9.3.1/ath_rate/sample/sample.o
  LD [M] /home/sune/src/madwifi-0.9.3.1/ath_rate/sample/ath_rate_sample.o
  CC [M] /home/sune/src/madwifi-0.9.3.1/net80211/if_media.o
  CC [M] /home/sune/src/madwifi-0.9.3.1/net80211/ieee80211.o
  CC [M] /home/sune/src/madwifi-0.9.3.1/net80211/ieee80211_beacon.o
  CC [M] /home/sune/src/madwifi-0.9.3.1/net80211/ieee80211_crypto.o
  CC [M] /home/sune/src/madwifi-0.9.3.1/net80211/ieee80211_crypto_none.o
  CC [M] /home/sune/src/madwifi-0.9.3.1/net80211/ieee80211_input.o
  CC [M] /home/sune/src/madwifi-0.9.3.1/net80211/ieee80211_node.o
  CC [M] /home/sune/src/madwifi-0.9.3.1/net80211/ieee80211_output.o
  CC [M] /home/sune/src/madwifi-0.9.3.1/net80211/ieee80211_power.o
  CC [M] /home/sune/src/madwifi-0.9.3.1/net80211/ieee80211_proto.o
  CC [M] /home/sune/src/madwifi-0.9.3.1/net80211/ieee80211_scan.o
  CC [M] /home/sune/src/madwifi-0.9.3.1/net80211/ieee80211_wireless.o
/home/sune/src/madwifi-0.9.3.1/net80211/ieee80211_wireless.c: In function 'ieee80211_ioctl_setkey':
/home/sune/src/madwifi-0.9.3.1/net80211/ieee80211_wireless.c:3192: internal compiler error: Illegal instruction
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
For Debian GNU/Linux specific bug reporting instructions,
see <URL:file:///usr/share/doc/gcc-4.1/README.Bugs>.
The bug is not reproducible, so it is likely a hardware or OS problem.
make[3]: *** [/home/sune/src/madwifi-0.9.3.1/net80211/ieee80211_wireless.o] Error 1
make[2]: *** [/home/sune/src/madwifi-0.9.3.1/net80211] Error 2
make[1]: *** [_module_/home/sune/src/madwifi-0.9.3.1] Error 2
make[1]: Leaving directory `/usr/src/linux-headers-2.6.20-15-generic'
make: *** [modules] Error 2
sune@jadis:~/src/madwifi$