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giterr format#4002
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While inspecting #4000, I've been very surprised to find out that we were passing a
git_bufpointer togiterr_setwithout any warning of the compiler. Seems we didn't put a printf-attribute hint at the declaration, causing the compiler to accept whatever we put there.Next to the many cases of
"%d"instead of"%"PRIuZwhich can cause us to overflow in the output, there were also three real errors where we passed a structure pointer to "%s" instead of the real value.