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dccp: fix warning in net/dccp/options.c

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this warning:

  net/dccp/options.c: In function ‘dccp_parse_options’:
  net/dccp/options.c:67: warning: ‘value’ may be used uninitialized in this function

is a bogus GCC warning. The compiler does not recognize the relation
between "value" and "mandatory" variables: the code flow can ever reach
the "out_invalid_option:" label if 'mandatory' is set to 1, and when
'mandatory' is non-zero, we'll always have 'value' initialized.

Help out the compiler by annotating the variable.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ingo Molnar 2008-11-25 16:57:30 -08:00 committed by David S. Miller
parent b71e839f9a
commit 3ed7cc0f8b
1 changed files with 1 additions and 1 deletions
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net/dccp/options.c
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@ -67,7 +67,7 @@ int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq,
(dh->dccph_doff * 4);
struct dccp_options_received *opt_recv = &dp->dccps_options_received;
unsigned char opt, len;
unsigned char *value;
unsigned char *uninitialized_var(value);
u32 elapsed_time;
__be32 opt_val;
int rc;