Hi Konstantin, On Mon, Oct 08, 2007 at 03:34:24PM +0300, Konstantin Oshovskij wrote: > > Hello, > i have encountered 2.6.22.9 compile warnings. This is the first time i > decided to report them. I had various compile warnings with earlier > kernel versions, its just i didnt had courage to report them :) I'm > using instructions from REPORTING-BUGS file as template so please bear > with me :) >
The "may be used uninitialized" errors are false positives from GCC. Mostly this happens from code paths like: int x, y; set_method(&x); y = x; > fs/xfs/xfs_bmap.c: In function 'xfs_bmap_rtalloc': > fs/xfs/xfs_bmap.c:2650: warning: 'rtx' is used uninitialized in this > function > Hidden by uninitialized_var() macro in latest pull. This macro silence the gcc by using the trick: #define uninitialized_var(x) x = x > function > ipc/msg.c:390: warning: 'setbuf.mode' may be used uninitialized in > this function > CC ipc/sem.o > ipc/sem.c: In function 'sys_semctl': > ipc/sem.c:861: warning: 'setbuf.uid' may be used uninitialized in this > function > ipc/sem.c:861: warning: 'setbuf.gid' may be used uninitialized in this > function > ipc/sem.c:861: warning: 'setbuf.mode' may be used uninitialized in > this function > Already hidden now by the uninitialized_var() macro. > drivers/pci/search.c: In function 'pci_find_slot': > drivers/pci/search.c:99: warning: 'pci_find_device' is deprecated > (declared at include/linux/pci.h:477) pci_find_slot is using pci_find_device on purpose here (equivalent to the safe pci_get_slot method). > drivers/pci/search.c: At top level: > drivers/pci/search.c:434: warning: 'pci_find_device' is deprecated > (declared at drivers/pci/search.c:241) > drivers/pci/search.c:434: warning: 'pci_find_device' is deprecated > (declared at drivers/pci/search.c:241) > False positives from function definition and from the innocent EXPORT_SYMBOL macro (It makes the method available to kernel modules). Regards, -- Ahmed S. Darwish HomePage: http://darwish.07.googlepages.com Blog: http://darwish-07.blogspot.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
