builtin/verify-tag.c: ignore SIGPIPE in gpg-interface
The verify_signed_buffer() function may trigger a SIGPIPE when the GPG child process terminates early (due to a bad keyid, for example) and Git tries to write to it afterwards. Previously, ignoring SIGPIPE was done in builtin/verify-tag.c to avoid this issue. However, any other caller who wants to call verify_signed_buffer() would have to do the same. Use sigchain_push(SIGPIPE, SIG_IGN) in verify_signed_buffer(), pretty much like in sign_buffer(), so that any caller is not required to perform this task. This will avoid possible mistakes by further developers using verify_signed_buffer(). Signed-off-by: NSantiago Torres <santiago@nyu.edu> Reviewed-by: NEric Sunshine <sunshine@sunshineco.com> Signed-off-by: NJunio C Hamano <gitster@pobox.com>
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