diff options
Diffstat (limited to 'tests/misc/cut-huge-range.sh')
| -rwxr-xr-x | tests/misc/cut-huge-range.sh | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/tests/misc/cut-huge-range.sh b/tests/misc/cut-huge-range.sh index e9190a2c2..7816577b9 100755 --- a/tests/misc/cut-huge-range.sh +++ b/tests/misc/cut-huge-range.sh @@ -21,10 +21,31 @@ print_ver_ cut require_ulimit_v_ getlimits_ +# sed script to subtract one from the input. +# Each input line should consist of a positive decimal number. +# Each output line's number is one less than the input's. +# There's no limit (other than line length) on the number's magnitude. +subtract_one=' + s/$/@/ + : again + s/0@/@9/ + s/1@/0/ + s/2@/1/ + s/3@/2/ + s/4@/3/ + s/5@/4/ + s/6@/5/ + s/7@/6/ + s/8@/7/ + s/9@/8/ + t again +' + # Ensure we can cut up to our sentinel value. # This is currently SIZE_MAX, but could be raised to UINTMAX_MAX # if we didn't allocate memory for each line as a unit. -CUT_MAX=$(expr $SIZE_MAX - 1) +# Don't use expr to subtract one, since SIZE_MAX may exceed its maximum value. +CUT_MAX=$(echo $SIZE_MAX | sed "$subtract_one") # From coreutils-8.10 through 8.20, this would make cut try to allocate # a 256MiB bit vector. With a 20MB limit on VM, the following would fail. |