Re: [PATCH] util: convert char pointers to use g_autofree
On 11/20/20 11:43 AM, Barrett J Schonefeld wrote:
I appreciate the feedback on this patch!
I will work on splitting this into multiple patches. I believe this will
involve redoing much of the work because I will need to split this patch
(a single commit) into many commits.
One suggestion on how to more easily split one patch into multiple
patches (keeping in mind there's probably a much cleaner way of doing
the same thing; this is just how I've evolved to do it):
1) make a new branch "X-v2" based off the branch "X" that has this
current patch
2) "git reset HEAD^" on the new branch - this will remove the last
commit from git, but leave the working copies of the file unchanged.
3) use a tool like "git meld" to interactively go through all the
changes (hunks) you've made in this single commit, *un*doing the ones
that aren't related to basic g_autofree conversion.
4) git add / git commit -m"convert to g_autofree"
5) "git meld X" to compare the original commit on the *old* branch to
the tip of the new branch, interactively re-applying all the hunks that
you had just removed.
5) git add / git commit -m"remove unnecessary cleanup labels and return
variables"
Hence, I'd like to get some
confirmation on how I should approach the patch.
I plan to:
1. Address the feedback on returning `-errno`, `0`, `-1`, etc. directly
instead of setting the local variable, `ret`, and returning `ret`.
2. Submit a patch per file with only the g_autofree changes.
3. Submit a patch per file that removes the cleanup sections.
A couple of qualifiers:
a) changing the return values to constants will of course happen as a
part of the "cleanup label removal" patch (item (3)), not on its own.
b) a recent patch from jtomko reminded me of two occasions when you
*would* want a separate patch for the g_autofree changed in a single
function all by itself:
ii) if that change fixes a bug (which would usually be a memory leak),
and/or
iii) if it requires any change in the logic of the function beyond
simply adding "g_autofree virBlahPtr blah = NULL;" and
removing the VIR_FREE(blah); at the end of the scope.
Both of these would warrant extra explanation in the commit log, and
that's easier to follow if it's isolated.