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Fixed in 5.5.1



Found in


Issue ID




[Shuriken] Error in TLS Allocator ALLOC_TEMP_THREAD when simulating particle system



Repro steps:

1. Open repro-scene from attached project.
2. Select Particle System in Hierarchy for it to Simulate.
3. Observe console errors:

- Can't check for regressions as 5.5 projects can't be opened in 5.4. Assuming it's an upgrade issue as 5.5 just came out, so marking as a regression.
- Resetting particle system does not fix the issue. Does not seem to be SubEmitter-related.
- Creating a new scene and a new particle system still shows the same issue.
- Deleting the Library and Project folder had no effect.
- Getting no errors when opening in 5.6.0a6

Comments (8)

  1. KushyKitty

    Dec 26, 2021 17:04

    THIS IS NOT FIXED, at least not in the current version (2021.2.4f1) on my machine (2020 Macbook Air). I know this machine is not ideal for graphics & such but i should still be able to use Unity without this memory leak bringing Unity to its knees every time i simulate a stream of particles.

  2. WagDan

    Apr 20, 2017 10:32

    I get this in 5.6, with no particles.

  3. axomind

    Apr 06, 2017 06:34

    I get this issue after upgrade from 5.5 to 5.6... Disable all particle system doesn't change a thing

  4. Skyfly

    Jan 17, 2017 09:35

    Even after deleting the prefab from the scene I get frequent 'Allocation of 768 bytes at 05ec8700' in masses.

  5. Skyfly

    Jan 17, 2017 09:34

    See the same on basic scenes with 5.5.0p3 (fireworks prefab from standard assets) Only editor restart helps. Floods the console.

  6. maikkel

    Jan 07, 2017 23:31

    ...or not, now in play mode with fireworks playing, i get a ton of "Assertion failed" errors:

    Assertion failed on expression: 'particles.array_size() == count'
    Assertion failed on expression: 'count == particles.array_size()'
    Assertion failed on expression: 'count >= toIndex'

    They keep repeating...

  7. maikkel

    Jan 07, 2017 23:26

    Ok, seems fixed in 5.6.0b3

  8. maikkel

    Jan 07, 2017 22:50

    Downloaded Patch release 5.5.0p3, where this should be fixed. The same thing still happens with the particle systems. Re-Imported the Standard Assets, didn't work...

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