eval "return" does not return from function

• Rapporteur: mcdutchie
• Propriétaire: magicant
• Type: Bogues
• État: Atteints
• Composant: shell-builtin
• Jalon: (Aucun)
• Priorité: 5 - moyen
• Sévérité: 5 - moyen
• Résolution: Fixed
• Fichier: Aucun

Détails Répondre

When executing a function, and "return" is encountered within an "eval" statement, yash does not return from the function; instead, it only stops executing the "eval" and continues the function after it. Every other shell (bash, *ksh*, zsh, (d)ash, etc.) returns from the function.

testfn() {
    echo 1
    eval "echo 2; return; echo 3"
    echo 4
}
testfn

Actual output:

1
2
4

Expected output:

1
2

Example of real-life use case: unset some temporary variables, then return with the exit code of the command preceding the 'eval'. Using 'eval' removes the need to store the exit status in a variable. This bug makes it harder to do this in yash -- eval does exit with the saved status, but then in yash, another "return" is needed after the eval.

eval "unset -v temp1 temp2; return $?"

Ticket History (3/4 Histories)

2015-06-12 10:02 Updated by: mcdutchie

• New Ticket "eval "return" does not return from function" created

2015-06-12 22:01 Updated by: mcdutchie

• Composant Update from (Aucun) to shell-builtin
• Propriétaire Update from (Aucun) to magicant

2015-06-12 22:24 Updated by: magicant

Commentaire Répondre

Hmm. The cancel_return call at the end of the parse_and_exec function is not doing the right thing.

2015-07-05 23:56 Updated by: magicant

• Résolution Update from Aucun to Fixed
• État Update from Ouvert to Atteints
• Ticket Close date is changed to 2015-07-05 23:56

Commentaire Répondre

Fixed in r3316

Thanks for reporting!