On Mon, Jan 22, 2018 at 07:54:01PM -0500, Jeff King wrote: > But anyway, that was a bit of a tangent. Certainly the smaller change is > just standardizing on sizeof(*foo), which I think most people agree on > at this point. It might be worth putting in CodingGuidelines.
Personally I prefer sizeof(*foo) which is a well non-idiom, used in many projects and IMHO easy to read and understand. I've played a little with coccinelle and the following spatch seems to catch many occurrences of sizeof(struct ..) (the first hunk seems to expand multiple times causing conflicts in the generated patch). Cases like a->b = xcalloc() are not matched, I don't know enough coccinelle for that. If there's interest I could prepare patches, but it will create quite some code churn. Regards Simon @@ type T; identifier x; @@ - T *x = xmalloc(sizeof(T)); + T *x = xmalloc(sizeof(*x)); @@ type T; T *x; @@ - x = xmalloc(sizeof(T)); + x = xmalloc(sizeof(*x)); @@ type T; identifier x; expression n; @@ - T *x = xcalloc(n, sizeof(T)); + T *x = xcalloc(n, sizeof(*x)); @@ type T; T *x; expression n; @@ - x = xcalloc(n, sizeof(T)); + x = xcalloc(n, sizeof(*x)); @@ type T; T x; @@ - memset(&x, 0, sizeof(T)); + memset(&x, 0, sizeof(x)); @@ type T; T *x; @@ - memset(x, 0, sizeof(T)); + memset(x, 0, sizeof(*x)); -- + privacy is necessary + using gnupg http://gnupg.org + public key id: 0x92FEFDB7E44C32F9
