* Linux Kernel Mailing List <[email protected]> wrote:
> Committer: Linus Torvalds <[email protected]>
> CommitDate: Sat Apr 7 10:18:33 2007 -0700
>
> sched.c: Remove unused variable 'relative'
>
> Getting rid of the p->children printout in show_task() left behind an
> unused variable.
grumble. The warning drowned in the usual flood of gcc warnings that a
kernel compile produces. Btw., whenever i meet a gcc false positive that
annoys me particularly, i just fix it up and flame the gcc folks in a
comment. That patch has grown quite a bit and can be found below. (it's
not complete by any means, and it should rather be done as an annotation
combined with some unflattering CONFIG_HACK_AROUND_BROKEN_GCC_WARNINGS
option that a sane compiler could unset and avoid the runtime cost of
needless initializations.)
Ingo
----------->
arch/i386/kernel/cpu/mcheck/p4.c | 2 +-
arch/i386/kernel/efi.c | 2 +-
fs/block_dev.c | 2 +-
fs/isofs/namei.c | 2 +-
fs/jffs2/erase.c | 2 +-
fs/nfsd/nfsctl.c | 2 +-
ipc/msg.c | 2 +-
ipc/sem.c | 2 +-
kernel/audit.c | 2 +-
kernel/auditfilter.c | 2 +-
net/core/flow.c | 2 +-
net/sunrpc/svc.c | 2 +-
sound/core/control_compat.c | 2 +-
sound/pci/pcxhr/pcxhr.c | 2 +-
14 files changed, 14 insertions(+), 14 deletions(-)
Index: linux/arch/i386/kernel/cpu/mcheck/p4.c
===================================================================
--- linux.orig/arch/i386/kernel/cpu/mcheck/p4.c
+++ linux/arch/i386/kernel/cpu/mcheck/p4.c
@@ -155,7 +155,7 @@ static fastcall void intel_machine_check
u32 alow, ahigh, high, low;
u32 mcgstl, mcgsth;
int i;
- struct intel_mce_extended_msrs dbg;
+ struct intel_mce_extended_msrs dbg = { 0, } /* shut up gcc! */;
rdmsr (MSR_IA32_MCG_STATUS, mcgstl, mcgsth);
if (mcgstl & (1<<0)) /* Recoverable ? */
Index: linux/arch/i386/kernel/efi.c
===================================================================
--- linux.orig/arch/i386/kernel/efi.c
+++ linux/arch/i386/kernel/efi.c
@@ -278,7 +278,7 @@ void efi_memmap_walk(efi_freemem_callbac
struct range {
unsigned long start;
unsigned long end;
- } prev, curr;
+ } prev = { } /* shut up gcc */ , curr = { } /* shut up gcc */ ;
efi_memory_desc_t *md;
unsigned long start, end;
void *p;
Index: linux/fs/block_dev.c
===================================================================
--- linux.orig/fs/block_dev.c
+++ linux/fs/block_dev.c
@@ -950,7 +950,7 @@ static int bd_claim_by_kobject(struct bl
struct kobject *kobj)
{
int res;
- struct bd_holder *bo, *found;
+ struct bd_holder *bo, *found = NULL /* shut up GCC */;
if (!kobj)
return -EINVAL;
Index: linux/fs/isofs/namei.c
===================================================================
--- linux.orig/fs/isofs/namei.c
+++ linux/fs/isofs/namei.c
@@ -158,7 +158,7 @@ isofs_find_entry(struct inode *dir, stru
struct dentry *isofs_lookup(struct inode * dir, struct dentry * dentry, struct nameidata *nd)
{
int found;
- unsigned long block, offset;
+ unsigned long block = 0, offset = 0 /* avoid stupid gcc warning */;
struct inode *inode;
struct page *page;
Index: linux/fs/jffs2/erase.c
===================================================================
--- linux.orig/fs/jffs2/erase.c
+++ linux/fs/jffs2/erase.c
@@ -364,7 +364,7 @@ static void jffs2_mark_erased_block(stru
{
size_t retlen;
int ret;
- uint32_t bad_offset;
+ uint32_t bad_offset = 0 /* shut up gcc */;
switch (jffs2_block_check_erase(c, jeb, &bad_offset)) {
case -EAGAIN: goto refile;
Index: linux/fs/nfsd/nfsctl.c
===================================================================
--- linux.orig/fs/nfsd/nfsctl.c
+++ linux/fs/nfsd/nfsctl.c
@@ -299,7 +299,7 @@ static ssize_t write_filehandle(struct f
* qword quoting is used, so filehandle will be \x....
*/
char *dname, *path;
- int maxsize;
+ int maxsize = 0;
char *mesg = buf;
int len;
struct auth_domain *dom;
Index: linux/ipc/msg.c
===================================================================
--- linux.orig/ipc/msg.c
+++ linux/ipc/msg.c
@@ -387,7 +387,7 @@ copy_msqid_from_user(struct msq_setbuf *
asmlinkage long sys_msgctl(int msqid, int cmd, struct msqid_ds __user *buf)
{
struct kern_ipc_perm *ipcp;
- struct msq_setbuf setbuf;
+ struct msq_setbuf setbuf = { /* shut up gcc warning */ };
struct msg_queue *msq;
int err, version;
struct ipc_namespace *ns;
Index: linux/ipc/sem.c
===================================================================
--- linux.orig/ipc/sem.c
+++ linux/ipc/sem.c
@@ -859,7 +859,7 @@ static int semctl_down(struct ipc_namesp
{
struct sem_array *sma;
int err;
- struct sem_setbuf setbuf;
+ struct sem_setbuf setbuf = { /* shut up gcc warning */ };
struct kern_ipc_perm *ipcp;
if(cmd == IPC_SET) {
Index: linux/kernel/audit.c
===================================================================
--- linux.orig/kernel/audit.c
+++ linux/kernel/audit.c
@@ -969,7 +969,7 @@ struct audit_buffer *audit_log_start(str
{
struct audit_buffer *ab = NULL;
struct timespec t;
- unsigned int serial;
+ unsigned int serial = 0 /* shut up gcc */;
int reserve;
unsigned long timeout_start = jiffies;
Index: linux/kernel/auditfilter.c
===================================================================
--- linux.orig/kernel/auditfilter.c
+++ linux/kernel/auditfilter.c
@@ -1168,7 +1168,7 @@ static inline int audit_add_rule(struct
struct audit_entry *e;
struct audit_field *inode_f = entry->rule.inode_f;
struct audit_watch *watch = entry->rule.watch;
- struct nameidata *ndp, *ndw;
+ struct nameidata *ndp = NULL, *ndw = NULL /* shut up gcc */;
int h, err, putnd_needed = 0;
#ifdef CONFIG_AUDITSYSCALL
int dont_count = 0;
Index: linux/net/core/flow.c
===================================================================
--- linux.orig/net/core/flow.c
+++ linux/net/core/flow.c
@@ -172,7 +172,7 @@ static int flow_key_compare(struct flowi
void *flow_cache_lookup(struct flowi *key, u16 family, u8 dir,
flow_resolve_t resolver)
{
- struct flow_cache_entry *fle, **head;
+ struct flow_cache_entry *fle, **head = NULL /* shut up GCC */;
unsigned int hash;
int cpu;
Index: linux/net/sunrpc/svc.c
===================================================================
--- linux.orig/net/sunrpc/svc.c
+++ linux/net/sunrpc/svc.c
@@ -547,7 +547,7 @@ __svc_create_thread(svc_thread_fn func,
struct svc_rqst *rqstp;
int error = -ENOMEM;
int have_oldmask = 0;
- cpumask_t oldmask;
+ cpumask_t oldmask = CPU_MASK_NONE /* shut up GCC */;
rqstp = kzalloc(sizeof(*rqstp), GFP_KERNEL);
if (!rqstp)
Index: linux/sound/core/control_compat.c
===================================================================
--- linux.orig/sound/core/control_compat.c
+++ linux/sound/core/control_compat.c
@@ -219,7 +219,7 @@ static int copy_ctl_value_from_user(stru
struct snd_ctl_elem_value32 __user *data32,
int *typep, int *countp)
{
- int i, type, count, size;
+ int i, type, count = 0 /* shut up gcc warning */, size;
unsigned int indirect;
if (copy_from_user(&data->id, &data32->id, sizeof(data->id)))
Index: linux/sound/pci/pcxhr/pcxhr.c
===================================================================
--- linux.orig/sound/pci/pcxhr/pcxhr.c
+++ linux/sound/pci/pcxhr/pcxhr.c
@@ -637,7 +637,7 @@ static void pcxhr_trigger_tasklet(unsign
*/
static int pcxhr_trigger(struct snd_pcm_substream *subs, int cmd)
{
- struct pcxhr_stream *stream;
+ struct pcxhr_stream *stream = NULL /* shut up gcc */;
struct list_head *pos;
struct snd_pcm_substream *s;
int i;
-
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