# What does !proc || !bin.finalPass mean?

**URL:** <https://forum.makecode.com/t/what-does-proc-bin-finalpass-mean/28080>\
**Category:** Help\
**Created:** [April 4, 2024, 6:08pm UTC](https://forum.makecode.com/t/what-does-proc-bin-finalpass-mean/28080 "2024-04-04T18:08:56Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![ARandomGuyOnMakeCode](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/arandomguyonmakecode/32/22983_2.png) [@ARandomGuyOnMakeCode](https://forum.makecode.com/u/ARandomGuyOnMakeCode)\
**Post date:** [April 4, 2024, 6:08pm UTC](https://forum.makecode.com/t/what-does-proc-bin-finalpass-mean/28080/1 "2024-04-04T18:08:56Z")

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I’ve recently been encountering the “!!proc || !bin.finalPass” error while trying to make an extension, specifically when trying to overload a function. After doing some digging, I’ve realized that overloading functions is not supported, but I’m still curious as to what the “!!proc || !bin.finalPass” error is supposed to mean.

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**Author:** ![richard](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/richard/32/5417_2.png) [@richard](https://forum.makecode.com/u/richard)\
**Post date:** [April 4, 2024, 6:10pm UTC](https://forum.makecode.com/t/what-does-proc-bin-finalpass-mean/28080/2 "2024-04-04T18:10:26Z")

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That is an internal compiler error that you should (hopefully) never see! We should probably replace it with an actual error message but very few people ever actually encounter it (so consider yourself lucky!)

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**Author:** ![WoofWoof](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/woofwoof/32/32523_2.png) [@WoofWoof](https://forum.makecode.com/u/WoofWoof)\
**Post date:** [April 4, 2024, 7:47pm UTC](https://forum.makecode.com/t/what-does-proc-bin-finalpass-mean/28080/3 "2024-04-04T19:47:10Z")

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_a wild error appears_

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**Author:** ![robotosaurus](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/robotosaurus/32/19294_2.png) [@robotosaurus](https://forum.makecode.com/u/robotosaurus)\
**Post date:** [April 4, 2024, 9:52pm UTC](https://forum.makecode.com/t/what-does-proc-bin-finalpass-mean/28080/4 "2024-04-04T21:52:54Z")

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Missingno? XD

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<div class="post-metadata">

**Author:** ![ARandomGuyOnMakeCode](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/arandomguyonmakecode/32/22983_2.png) [@ARandomGuyOnMakeCode](https://forum.makecode.com/u/ARandomGuyOnMakeCode)\
**Post date:** [April 4, 2024, 9:52pm UTC](https://forum.makecode.com/t/what-does-proc-bin-finalpass-mean/28080/5 "2024-04-04T21:52:58Z")

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Thank you for the information! :angelfish:

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<div class="post-metadata">

**Author:** ![VoxelMaster64](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.makecode.com/voxelmaster64/32/32075_2.png) [@VoxelMaster64](https://forum.makecode.com/u/VoxelMaster64)\
**Post date:** [August 6, 2026, 4:25pm UTC](https://forum.makecode.com/t/what-does-proc-bin-finalpass-mean/28080/6 "2026-08-06T16:25:33Z")

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> [@What is this error?](https://forum.makecode.com/t/what-is-this-error/44678):
>
> I was trying to make a runtime error with the fewest characters, and img(0) confused me. It generates an error, but for whatever reason, the project still runs. The error is this: !!proc || !bin.finalPass and can be shown [here](https://arcade.makecode.com/S59205-50766-73618-58430). What does this mean?