You made alpha users sad.
----- Forwarded message from Michael Cree <mcree@xxxxxxxxxxxx> -----
From: Michael Cree <mcree@xxxxxxxxxxxx>
To: md@xxxxxxxx
CC: Meelis Roos <mroos@xxxxxxxx>, 572512@xxxxxxxxxxxxxxx,
debian-alpha@xxxxxxxxxxxxxxxx
Subject: Re: Bug#572512: module-init-tools: depmod unaligned trap on alpha
On 15/04/10 20:53, Marco d'Itri wrote:
> On Apr 15, Meelis Roos<mroos@xxxxxxxx> wrote:
>
>>>> Please find out exactly which operation is causing the traps.
>>> Are there any news?
I just found a moment to look at this:
Core was generated by `depmod -a'.
Program terminated with signal 10, Bus error.
#0 0x000000012000e34c in native_endianness () at ../util.c:205
205 return (char) *((uint32_t*)("\1\0\0\2"));
(gdb) bt
#0 0x000000012000e34c in native_endianness () at ../util.c:205
#1 0x000000012000738c in main (argc=2, argv=0x11facdc98) at
../depmod.c:1312
(gdb) list
200 int __attribute__ ((pure)) native_endianness()
201 {
202 /* Encoding the endianness enums in a string and then reading that
203 * string as a 32-bit int, returns the correct endianness
automagically.
204 */
205 return (char) *((uint32_t*)("\1\0\0\2"));
206 }
Yeah, nice programming guys. Allocate a string, i.e. an array of
char, which the compiler will merely byte align and then read it
back as a long word which must be long word aligned. And the
programmer thinks he is so smart that he descibes it
as "automagically"! Doh.
Cheers
Michael.
----- End forwarded message -----
--
ciao,
Marco
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