Package: luajit
Version: 2.0.4+dfsg-1
Severity: important
Dear Maintainer,
Neovim's test suite was periodically failing on mipsel and after looking
into it, it turns out that luajit sometimes incorrectly handles
str:sub(i, j).
I instrumented the test to log the i, j, and size of the returned
string. A snippet of the relevant code is below:
local shift = 0
while shift < #fcontents do
local size = 3
local s = fcontents:sub(shift + 1, shift + size)
if shift + size < #fcontents then
io.stdout:write('shift+1: '..(shift)..', shift+size:
'..(shift+size)..', s: '..#s..'\n')
eq(size, #s)
end
local wr = file_write(fp, s)
eq(wr, #s)
shift = shift + size
end
fcontents is a string of 4096 bytes, which we take 3 bytes at a time and
write to a file. Sometimes, this fails because fcontents:sub returns
the rest of the string instead of just the slice requested. As an
example:
…
shift+1: 2931, shift+size: 2934, s: 3
shift+1: 2934, shift+size: 2937, s: 3
shift+1: 2937, shift+size: 2940, s: 3
shift+1: 2940, shift+size: 2943, s: 1156
not ok 192 - file_write can write the whole file by small chunks
The final call (fcontents:sub(2940, 2943)) returned a slice from 2940 →
4096 (1156 bytes).
-- System Information:
Debian Release: stretch/sid
APT prefers unstable-debug
APT policy: (500, 'unstable-debug'), (500, 'unstable')
Architecture: mipsel (mips)
Kernel: Linux 4.7.0-0.bpo.1-octeon (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: unable to detect
Versions of packages luajit depends on:
ii libc6 2.24-8
ii libgcc1 1:6.2.1-5
ii libluajit-5.1-common 2.0.4+dfsg-1
luajit recommends no packages.
luajit suggests no packages.
-- no debconf information
Cheers,
--
James
GPG Key: 4096R/91BF BF4D 6956 BD5D F7B7 2D23 DFE6 91AE 331B A3DB
