bug(split): split -a 1 creates empty file before something is written to stdin

[HackingRepo]

Hi, uutils mainteners

our testing confirmed

relunsec@relunsec:~/software/coreutils/target/debug$ ./split -a 255
split: unable to open 'xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'; aborting
relunsec@relunsec:~/software/coreutils/target/debug$ 

it fails in the open process after 255 and no errors reported, the gnu one not errors out

relunsec@relunsec:~/software/coreutils/target/debug$ gnusplit -a 255

and no errors

[oech3]

By the way,

> echo 1|'/home/a/bin/gnu9.11/split' -a 255
split: xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa: File name too long

[HackingRepo]

oh sorry gnu one errors out, but uu split does error out, but just said a generic error message, @oech3

[oech3]

So the titie of this PR should be
"split -a 1 creates empty file before something is written to stdin"
Generation error with slightly different message at open is fine.

[oech3]

Should be 1, because 255 is error on both.

[HackingRepo]

ok, now good

[oech3]

So -a 1 is unrelated too. We see similar issue if xaa -> /dev/full.

[oech3]

It seems this is regression from 0.8.0

[HackingRepo]

it happend also when the CWD is removed, in another terminal and still the second terminal the cwd points to the removed one whiches 'z/'

relunsec@relunsec:~/software/coreutils/target/debug/z$ ../split ../a
split: unable to open 'xaa'; aborting
relunsec@relunsec:~/software/coreutils/target/debug/z$ gnusplit ../a
gnusplit: xaa: No such file or directory
relunsec@relunsec:~/software/coreutils/target/debug/z$