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Editorial Team
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Asked: 2026-06-01T16:27:14+00:00

I use XCode on many 64-bit projects, with no problem… But many times, I

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I use XCode on many 64-bit projects, with no problem… But many times, I will find that while a target is set for 64-bit, all-but-most-basic code-completion and syntax highlighting stops working. This is the case whether ARC is enabled – or not.. (and yes, I know 32-bit isn’t valid target under ARC, blah blah blah… but the funny thing is.. Syntax highlighting usually DOES work on such a misbehaving project if then switched to 32 bit mode. I have tried deleting “Derived Data”, cleaning, analyzing, etc. See below for an illustration of the issue. This is on a 10.7.3, 12GB RAM, 8-Core 2008 MacPro.

You know what I’m talking about if up at the top, you see Xcode saying

(Paused) Indexing… 0 of …

Any ideas?

64bit woes.

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1 Answer

  1. Editorial Team

    I can confirm, after several tests, that goint into Product -> Edit Scheme -> and then Toggle Either / Or Peristent State / Document Versions DOES fix this.

    toggle these

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