Currently, if you specify -t x, then s is advanced once in the switch statement
to determine the length, and then once again in the for loop, resulting in a
read past the end of the argument.
Also, use sizeof(int) when no length is specified, as specified by POSIX.
I'm not sure if there are other implications of this or not, but
the issue is that columns() uses len to store the allocated buffer
size, but linecmp() compares up to len bytes. If those trailing
bytes do not match, the line is considered not matching, even though
the relevant parts of the buffer do match.
To resolve this, also keep track of column capacity. Additionally,
since there is no reason to keep the existing data when resizing,
just use free and emalloc rather than erealloc.
The simplest case I could reduce it to is this:
if [ "$(printf '%s\n' a a xxb xxc | ./sort -u)" = "$(printf '%s\n' a xxb xxc)" ] ; then
echo pass
else
echo fail
fi
- After first iteration, set first to 0 instead of !first.
- If Hflag || Lflag, then mkent used stat instead of lstat, so the
entity cannot be a symlink.
- Print path prefix along with directory name.
- In the 'if (Rflag)' block, just use 1 instead of Rflag.
This reverts commit bb83eade39.
This commit causes the loop through dents at the end of main to
continue past the end of the dents array, causing a crash when
called with multiple directory arguments.
Previously, it printed lines that didn't match some pattern. Instead,
it should print lines that don't match *any* pattern.
Test case:
out=$(echo foo | ./grep -v -e foo -e bar)
if [ "$?" = 1 ] && [ -z "$out" ] ; then
echo pass
else
echo fail
fi
This provides a reliable and portable way to
test whether an environment variable is defined.
(Of course, if you are using glibc you may get
false positives if you include a = in the query.)
Signed-off-by: Mattias Andrée <maandree@kth.se>
reproduce: touch -t 12345678 mytralala
would only give a warning and use uninitialised time values. The proper
way is to treat it as an error. Clear the "struct tm" and kill some lines
just in case.
In eb9bda8787, a bug was introduced in the
handling of -1 return values from getline. Since the type of the len
field in struct line is unsigned, the break condition was never true.
This caused sort -c to never succeed.
A bug was introduced in the NUL support refactor leading to
the length of the previous line only being saved if the
previous line was shorter than the current line. If triggered
this lead to copying too much data into the previous line buffer.
Behavior before:
printf '1234\na\n' | ./uniq
1234
a
4
Behavior after:
printf '1234\na\n' | ./uniq
1234
a
because we can't call the syslog-syscall without becoming unportable.
The syslog() libc-function does not accept a length though, so we're
fucked. Anyway, let's carry on.
Thing is, we don't yet have an updated utflen() ready for use. Although
prints the lines completely, it does not add a proper spacing between
each entry. This will be fixed later.
