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| author | Xin LI <delphij@FreeBSD.org> | 2023-06-09 01:38:47 +0000 |
|---|---|---|
| committer | Xin LI <delphij@FreeBSD.org> | 2023-06-09 01:39:05 +0000 |
| commit | d1016568185ddacbf1148acbe26b27258981b4f0 (patch) | |
| tree | 40169d19c6e73808ee1a16a8f429818b13ccc554 | |
| parent | cbbac560911521c0ded3e06e713107176855fae4 (diff) | |
| download | src-d1016568185ddacbf1148acbe26b27258981b4f0.tar.gz src-d1016568185ddacbf1148acbe26b27258981b4f0.zip | |
hexdump: Partial lines cannot be repetitions of earlier lines.
When checking for repetitions of earlier lines, we compare the
first nread bytes of the line against the saved line. However,
when we read a partial line, it should never be treated as a
repetition of an earlier line, even if the first bytes match.
This change fixes a bug where a partial line could be
incorrectly identified as a repetition of an earlier line.
Reported-by: Mark Adler <madler@alumni.caltech.edu>
PR: 118723
Reviewed-by: emaste
MFC-after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D40471
| -rw-r--r-- | usr.bin/hexdump/display.c | 2 | ||||
| -rw-r--r-- | usr.bin/hexdump/tests/Makefile | 3 | ||||
| -rw-r--r-- | usr.bin/hexdump/tests/d_hexdump_UCflag_bug118723.out | 4 | ||||
| -rw-r--r-- | usr.bin/hexdump/tests/d_hexdump_UCvflag_bug118723.out | 4 | ||||
| -rw-r--r-- | usr.bin/hexdump/tests/d_hexdump_bug118723.in | 5 | ||||
| -rwxr-xr-x | usr.bin/hexdump/tests/hexdump_test.sh | 8 |
6 files changed, 25 insertions, 1 deletions
diff --git a/usr.bin/hexdump/display.c b/usr.bin/hexdump/display.c index 36306ededfc6..b4e7084e1e97 100644 --- a/usr.bin/hexdump/display.c +++ b/usr.bin/hexdump/display.c @@ -271,7 +271,7 @@ get(void) * XXX bcmp() is not quite right in the presence * of multibyte characters. */ - if (vflag != ALL && + if (need == 0 && vflag != ALL && valid_save && bcmp(curp, savp, nread) == 0) { if (vflag != DUP) { diff --git a/usr.bin/hexdump/tests/Makefile b/usr.bin/hexdump/tests/Makefile index 54863cb05603..f7a3575400bb 100644 --- a/usr.bin/hexdump/tests/Makefile +++ b/usr.bin/hexdump/tests/Makefile @@ -7,6 +7,7 @@ ATF_TESTS_SH= hexdump_test od_test ${PACKAGE}FILES+= d_hexdump_a.in ${PACKAGE}FILES+= d_hexdump_b.in ${PACKAGE}FILES+= d_hexdump_c.in +${PACKAGE}FILES+= d_hexdump_bug118723.in ${PACKAGE}FILES+= d_hexdump_bflag_a.out ${PACKAGE}FILES+= d_hexdump_bflag_b.out ${PACKAGE}FILES+= d_hexdump_bflag_c.out @@ -30,6 +31,8 @@ ${PACKAGE}FILES+= d_hexdump_sflag_a.out ${PACKAGE}FILES+= d_hexdump_UCflag_a.out ${PACKAGE}FILES+= d_hexdump_UCflag_b.out ${PACKAGE}FILES+= d_hexdump_UCflag_c.out +${PACKAGE}FILES+= d_hexdump_UCflag_bug118723.out +${PACKAGE}FILES+= d_hexdump_UCvflag_bug118723.out ${PACKAGE}FILES+= d_hexdump_xflag_a_el.out ${PACKAGE}FILES+= d_hexdump_xflag_b_el.out ${PACKAGE}FILES+= d_hexdump_xflag_c_el.out diff --git a/usr.bin/hexdump/tests/d_hexdump_UCflag_bug118723.out b/usr.bin/hexdump/tests/d_hexdump_UCflag_bug118723.out new file mode 100644 index 000000000000..bd1f5333b6a1 --- /dev/null +++ b/usr.bin/hexdump/tests/d_hexdump_UCflag_bug118723.out @@ -0,0 +1,4 @@ +00000000 61 62 63 64 65 66 67 0a 30 31 32 33 34 35 36 0a |abcdefg.0123456.| +* +00000020 61 62 63 64 65 66 67 0a |abcdefg.| +00000028 diff --git a/usr.bin/hexdump/tests/d_hexdump_UCvflag_bug118723.out b/usr.bin/hexdump/tests/d_hexdump_UCvflag_bug118723.out new file mode 100644 index 000000000000..927897a3cef8 --- /dev/null +++ b/usr.bin/hexdump/tests/d_hexdump_UCvflag_bug118723.out @@ -0,0 +1,4 @@ +00000000 61 62 63 64 65 66 67 0a 30 31 32 33 34 35 36 0a |abcdefg.0123456.| +00000010 61 62 63 64 65 66 67 0a 30 31 32 33 34 35 36 0a |abcdefg.0123456.| +00000020 61 62 63 64 65 66 67 0a |abcdefg.| +00000028 diff --git a/usr.bin/hexdump/tests/d_hexdump_bug118723.in b/usr.bin/hexdump/tests/d_hexdump_bug118723.in new file mode 100644 index 000000000000..8ecef445e1e6 --- /dev/null +++ b/usr.bin/hexdump/tests/d_hexdump_bug118723.in @@ -0,0 +1,5 @@ +abcdefg +0123456 +abcdefg +0123456 +abcdefg diff --git a/usr.bin/hexdump/tests/hexdump_test.sh b/usr.bin/hexdump/tests/hexdump_test.sh index 5e19d1f99225..31ce52b830cd 100755 --- a/usr.bin/hexdump/tests/hexdump_test.sh +++ b/usr.bin/hexdump/tests/hexdump_test.sh @@ -75,6 +75,10 @@ C_flag_body() hexdump -C "$(atf_get_srcdir)/d_hexdump_b.in" atf_check -o file:"$(atf_get_srcdir)/d_hexdump_UCflag_c.out" \ hexdump -C "$(atf_get_srcdir)/d_hexdump_c.in" + atf_check -o file:"$(atf_get_srcdir)/d_hexdump_UCflag_bug118723.out" \ + hexdump -C "$(atf_get_srcdir)/d_hexdump_bug118723.in" + atf_check -o file:"$(atf_get_srcdir)/d_hexdump_UCvflag_bug118723.out" \ + hexdump -Cv "$(atf_get_srcdir)/d_hexdump_bug118723.in" } atf_test_case hd_name @@ -90,6 +94,10 @@ hd_name_body() hd "$(atf_get_srcdir)/d_hexdump_b.in" atf_check -o file:"$(atf_get_srcdir)/d_hexdump_UCflag_c.out" \ hd "$(atf_get_srcdir)/d_hexdump_c.in" + atf_check -o file:"$(atf_get_srcdir)/d_hexdump_UCflag_bug118723.out" \ + hd "$(atf_get_srcdir)/d_hexdump_bug118723.in" + atf_check -o file:"$(atf_get_srcdir)/d_hexdump_UCvflag_bug118723.out" \ + hd -v "$(atf_get_srcdir)/d_hexdump_bug118723.in" } atf_test_case d_flag |