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Re: [PATCH] Fix integer overflow in svn_auth.h

From: Branko Čibej <brane_at_xbc.nu>
Date: 2003-10-25 12:50:10 CEST

Tobias Ringström wrote:

> Justin Erenkrantz wrote:
>> So, what to do? Yet, I propose to change it as follows. -- justin
> Whoups, my mistake. I added that code yesterday. I really intended
> (1<<30) to avoid the sign bit, but I obviously cannot count. I doubt
> that anyone has had time to depend on that bit position yet, so I've
> fixed it in revision 7518. Thanks for spotting this! I think I have
> seen gcc warn about this, but it did not this time... :-(
> Actually it would have been enough to say (1U << 31), but I think it's
> still wise to stay away from the sign bit.

No, Greg Hudson is right. Use apr_uint32_t for the bitmask. And please
define the constants as constants, not expressions; e.g.,

    #define SVN_AUTH_SSL_OTHER 0x80000000

Then the compiler won't complain.

Brane Čibej   <brane_at_xbc.nu>   http://www.xbc.nu/brane/
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Received on Sat Oct 25 12:53:08 2003

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