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Issue with unioning templates that are benevolent #13192

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Issue with unioning templates that are benevolent#13192
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bug
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Generics

Description

@calebdw
calebdw
opened on Jun 29, 2025

Bug report

Hello!

Please see the example, it seems that when two templates of array-key are unioned it's not resulting in the correct type.

Code snippet that reproduces the problem

https://phpstan.org/r/eaea527b-3405-4705-aada-befc87d5050e

Expected output

I would expect the keys to have the correct type

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Activity

  1. ondrejmirtes
    added
    bug
    on Aug 30, 2025
  2. ondrejmirtes
    added this to the Generics milestone on Aug 30, 2025

  3. phpstan-bot commented on Sep 9, 2026

    @phpstan-bot
    phpstan-bot
    on Sep 9, 2026
    Contributor

    Closed via merging phpstan/phpstan-src#6376

  4. phpstan-bot
    closed this as completedon Sep 9, 2026

  5. github-actions commented on Oct 11, 2026

    @github-actions
    github-actionsBot
    on Oct 11, 2026 – with GitHub Actions

    This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.

  6. github-actions
    locked as resolved and limited conversation to collaborators on Oct 11, 2026
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