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authorJunio C Hamano <gitster@pobox.com>2023-01-15 00:03:39 -0800
committerJunio C Hamano <gitster@pobox.com>2023-01-16 10:31:45 -0800
commit5b8db44bdd619dc5ec4dcdac5cb3ca194ebdd046 (patch)
tree287f51fe477e9b64bd58961674f1894de9d63294 /commit.c
parentc48035d29b4e524aed3a32f0403676f0d9128863 (diff)
format-patch: unleak "-v <num>"
The "subject_prefix" member of "struct revision" usually is set to a borrowed string (either a string literal like "PATCH" that appear in the program text as a hardcoded default, or the value of "format.subjectprefix") and is never freed when the containing revision structure is released. The "-v <num>" codepath however violates this rule and stores a pointer to an allocated string to this member, relinquishing the responsibility to free it when it is done using the revision structure, leading to a small one-time leak. Instead, keep track of the string it allocates to let the revision structure borrow, and clean it up when it is done. Signed-off-by: Junio C Hamano <gitster@pobox.com>
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