[PATCH 0/4] fix pax extended header length calculation

The code for building pax extended headers has been miscalculating lengths slightly shorter than powers of 10 since I wrote it in 2006. That affects entries for paths with a length of 990, 991, 9989, 9990, 9991, 99988 etc. and link targets 4 characters shorter. Here's a series for fixing it.

  archive-tar: report wrong pax extended header length
  archive-tar: fix pax extended header length calculation
  archive-tar: use size_t in strbuf_append_ext_header()
  archive-tar: turn length miscalculation warning into BUG

 archive-tar.c                   | 14 ++++++++++----
 t/t5004-archive-corner-cases.sh | 19 +++++++++++++++++++
 2 files changed, 29 insertions(+), 4 deletions(-)

-- 2.23.0