2.5.21: fixdep starts spitting out 'unaligned traps'

[Jurriaan on Alpha]

alpha:/usr/src/linux-2.5.21# make boot
make[1]: Entering directory `/usr/src/linux-2.5.21/scripts'
  gcc -Wp,-MD,.fixdep.d -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer  -o fixdep fixdep.c
fixdep(12602): unaligned trap at 00000001200018d8: 0000000120001b6a 28 2
  gcc -Wp,-MD,.split-include.d -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer  -o split-include split-include.c
fixdep(12612): unaligned trap at 00000001200018d8: 0000000120001b6a 28 2
make[1]: Leaving directory `/usr/src/linux-2.5.21/scripts'
Splitting include/linux/autoconf.h -> include/config
make[1]: Entering directory `/usr/src/linux-2.5.21/init'
  gcc -Wp,-MD,.main.o.d -D__KERNEL__ -I/usr/src/linux-2.5.21/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointe
r -fno-strict-aliasing -fno-common -pipe -mno-fp-regs -ffixed-8 -mcpu=ev56 -Wa,-mev6 -nostdinc -iwithprefix include    -DKBUILD_BASEN
AME=main   -c -o main.o main.c
fixdep(12630): unaligned trap at 00000001200018d8: 0000000120001b6a 28 2
Generating ../include/linux/compile.h (updated)
  gcc -Wp,-MD,.version.o.d -D__KERNEL__ -I/usr/src/linux-2.5.21/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-poi
nter -fno-strict-aliasing -fno-common -pipe -mno-fp-regs -ffixed-8 -mcpu=ev56 -Wa,-mev6 -nostdinc -iwithprefix include    -DKBUILD_BA
SENAME=version   -c -o version.o version.c
fixdep(12661): unaligned trap at 00000001200018d8: 0000000120001b6a 28 2
  gcc -Wp,-MD,.do_mounts.o.d -D__KERNEL__ -I/usr/src/linux-2.5.21/include -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-p
ointer -fno-strict-aliasing -fno-common -pipe -mno-fp-regs -ffixed-8 -mcpu=ev56 -Wa,-mev6 -nostdinc -iwithprefix include    -DKBUILD_
BASENAME=do_mounts   -c -o do_mounts.o do_mounts.c

and so on - fixdep has changed, and on my alpha, it now has 'unaligned
traps'.

Of course, 2.5.21 won't compile at all, but still, this is a regression.

This seems to be caused by line 364 of fixdep.c:

alpha:/usr/src/linux-2.5.21# /home/jurriaan/unalign scripts/fixdep scripts/lxdialog/checklist.o /usr/src/linux-2.5.21 gcc -Wp,-MD,scr
ipts/lsdialog/.checklist.o.d -g -c -o scripts/lxdialog/checklist.o scripts/lxdialog/checklist.c
Extra arguments passed to gdb in file /tmp/file4Hb5gq.
Be sure to delete it when you're done.

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This GDB was configured as "alpha-linux".
fixdep(15767): unaligned trap at 0000000120001d48: 000000012000210a 28 3

Program received signal SIGBUS, Bus error.
0x120001d48 in traps () at scripts/fixdep.c:364
364             if (*(int *)test != INT_CONF) {
(gdb) bt
#0  0x120001d48 in traps () at scripts/fixdep.c:364
#1  0x120001de8 in main (argc=10, argv=0x11ffffc58) at scripts/fixdep.c:375
(gdb)

I'm not expert enough in C to suggest a solution for this, but I'm
willing to test.

Good luck,
Jurriaan
-- 
Everybody need to deviate from the norm
   Rush - Vital Signs
Debian GNU/Linux 2.4.19p8 on Alpha 990 bogomips 5 users load:0.04 0.06 0.07