Re: unbounded recursive call in a shell script crashes zsh

[Jérémie Roquet <jroquet@xxxxxxxxxxxxx>]

2017-04-13 17:21 GMT+02:00 Jérémie Roquet <jroquet@xxxxxxxxxxxxx>:
> Hence a total of 5856 bytes per recursion, or 5719 kiB for 10000 recursions.

Sorry, I meant 1000 recursions, obviously.

Here are the numbers when compiling using -O3 instead of -O0 -ggdb —
probably more useful for optimization:

execlist: 400 bytes
execpline: 416 bytes
execpline2: 224 bytes
execcmd_exec: 4864 bytes
execshfunc: 336 bytes
doshfunc: 704 bytes
runshfunc: 336 bytes
execode: 80 bytes
execlist: 400 bytes
execpline: 416 bytes
execpline2: 224 bytes
execcmd_exec: 4864 bytes
execif: 80 bytes

Aggregated:

execlist: 800 bytes
execpline: 832 bytes
execpline2: 448 bytes
execcmd_exec: 9728 bytes
execshfunc: 336 bytes
doshfunc: 704 bytes
runshfunc: 336 bytes
execode: 80 bytes
execif: 80 bytes

Hence an even higher total of 13344 bytes per recursion, or 13032 kiB
for 1000 recursions.

If I'm not mistaken, execcmd_exec seems to account for 73% of the stack usage.

-- 
Jérémie