On 12/30/2013 10:32 PM, Julia Lawall wrote:
I'm just thinking of a programmer, e.g. changing a struct like this: struct foo { u8 addr[ETH_ALEN]; - u16 dummy; };I don't know of a way to catch that. Anyone else?Well, one could have a semantic patch that checks for that. But the problem is that it is very slow, and it only covers the cases that I can transform automatically, which currently means no pointers, only explicit arrays. On the other hand, I am finding the structure definition, so I can easily update the structure definition with an appropriate comment. struct foo { u8 addr[ETH_ALEN]; /* must be followed by two bytes in the structure */ u16 dummy; }; Unfortunately it is kind of verbose. Could there be an attribute? That could even easily be checked.
Can you not just add a build-time macro to check that sizeof(foo) >= 8 for each of these struct foos? Or, is it required that the dummy field be there and be not used by anything else? Thanks, Ben
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-- Ben Greear <greearb@xxxxxxxxxxxxxxx> Candela Technologies Inc http://www.candelatech.com -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
