Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > gnu.bash.bug > #14072 > unrolled thread

Re: [BUG] 'unset' fails silently under specific conditions

Back to article view | Back to gnu.bash.bug

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.

Contents

  Re: [BUG] 'unset' fails silently under specific conditions Martijn Dekker <martijn@inlv.org> - 2018-05-01 20:29 +0200

#14072 — Re: [BUG] 'unset' fails silently under specific conditions

Op 01-05-18 om 18:45 schreef Martijn Dekker:
> It appears that it must have one function calling another, and that 
> other function having an assignment preceding a special builtin, for 
> 'unset' to fail silently for the variable so assigned.

Actually it can be simplified further: the following also outputs "BUG: 
still set". I fact, with this version, the bug manifests all the way 
down to bash 2.05b!

POSIXLY_CORRECT=y
func() {
   var=1
   var=2 :       # or 'var=2 set foo', or another special builtin
   unset -v var  # bug: fails silently
}
func
echo ${var+"BUG: still set"}

Thanks,

- M.

[toc] | [standalone]

Back to top | Article view | gnu.bash.bug

csiph-web