[Pkg-zsh-devel] Bug#879596: zsh forks when checking syntax

[Jakub Wilk]

Package: zsh
Version: 5.4.2-1
Severity: minor

zsh calls fork() when checking syntax of scripts that use "&":

   $ latrace -I --sym fork -- zsh -n -c 'f&f&f&f'
    5222   fork [/lib/i386-linux-gnu/libc.so.6]
    5222   fork [/lib/i386-linux-gnu/libc.so.6]
    5222   fork [/lib/i386-linux-gnu/libc.so.6]

   zsh finished - exited, status=0

This is weird. Forking is a rather expensive operation, and surely it 
should be possible to check syntax without it.


-- System Information:
Architecture: i386

Versions of packages zsh depends on:
ii  zsh-common  5.4.2-1
ii  libc6       2.24-17
ii  libcap2     1:2.25-1.1
ii  libtinfo5   6.0+20170902-1

Versions of packages zsh recommends:
ii  libncursesw5  6.0+20170902-1
ii  libpcre3      2:8.39-5

-- 
Jakub Wilk