used once on a non-empty pattern space and then again on an empty
pattern space, the second usage restores the pattern space length to
the length that it had when the first "P" was used.
PR: bin/96052
Submitted by: Andrey Zholos <aaz@althenia.net>
MFC after: 7 days
subtract one unsigned number from another potentially smaller
one, leading to wraparound (and heap corruption, eventually).
PR: 58813
MFC after: 2 weeks
whose true and false clauses were equivalent with a check that we are
not about to stumble off the end of the line.
Reported by: peter
Pointy hat to: fanf
There are two bugs: in the s///g case, the substitution didn't occur
at the end of the line; in the s///N case, the code didn't count
forwards along the line properly. See the sg, s3, s4, and s5 tests
in src/tools/regression/usr.bin/sed/.
Reviewed by: tjr
need to know. Instead, check when we are trying to match a "$" address.
This does not change the way sed processes regular files, but makes it behave
more sensibly when used interactively.
PR: 40101
MFC after: 2 weeks
instead add the newline when the pattern space is printed. Make the `G' and
`H' commands add a newline to the space before the data, remove bogus
addition of newline from `x' command.
PR: 29790, 38195
specified, and then the first part of the pattern space is deleted, when
there are two or more input lines, as this results in subtraction of one from
an unsigned integral value of '0'. That bogus value is used in one case
for a loop (that will run far too many times in this case) and a function to
search for a value within a specified range of memory, however now the range
of memory is obscenely large and a segmentation fault will occur. This is
fixed by checking for and appropriately handling a nil pattern space as if
the specified search in memory failed, as indeed it obviously will with nil
pattern space.
Submitted by: Tim J. Robbins <tim@robbins.dropbear.id.au>
PR: bin/34813
Reviewed by: mike
MFC after: 1 day
o main returns int not void
o use return 0 at end of main when needed
o use braces to avoid potentially ambiguous else
o don't default to type int
o #ifdef 0 -> #if 0
Reviewed by: obrien and chuckr
newline must be part of the pattern space i.e. `echo a|sed -e P' must print
a
a
and not
aa
This is consistent with gnu sed, SunOS, Ultrix (and probably others!)
