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Le 30.09.2005 01:54, Brice Goglin a écrit :
> Le 30.09.2005 01:40, Michal Piotrowski a écrit :
>
>>It maybe a problem with gentoo gcc.
>
>
> I'm seeing the same error with Debian gcc4.
>
> bgoglin@puligny:/usr/src/linux-mm$ gcc --version
> gcc (GCC) 4.0.1 (Debian 4.0.1-2)
>
> By the way, the error appears when compiling
> CC [M] fs/reiser4/debug.o
> while DEBUG is disabled for REISER4.
>
> My .config attached
> Note that Alexandre forgot to reenable Reiser4 in the .config he sent.
>
> Regards,
> Brice
It seems to appear when CONFIG_SMP=N and CONFIG_DEBUG_SPINLOCK=N and
CONFIG_REISER4_DEBUG=N.
In this case, spinlock_t is an empty struct (see
include/linux/spinlock_types.h and
include/linux/spinlock_types_up.h). Then sizeof(spinlock_t) _is_ 0,
and this breaks some code like cassert calls from
fs/reiser4/spin_macros.h line 85 (FIELD is a spinlock_t) :
82 static inline void spin_ ## NAME ## _init(TYPE *x) \
83 { \
84 __ODCA("nikita-2987", x != NULL); \
85 cassert(sizeof(x->FIELD) != 0); \
86 memset(& x->FIELD, 0, sizeof x->FIELD); \
87 spin_lock_init(& x->FIELD.lock); \
88 } \
89
~~
laurent
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