Visualize command gives error: use of undeclared identifier 'CFTypeRef'

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class="SharedMenu-module--subTitleList--11ca1">Environments</div><div class="SharedMenu-module--menuList--d425c"><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/enviroments/dev-qa-staging/">Dev/QA/Staging</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/enviroments/ci-cd-pipelines/">CI/CD</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/enviroments/production/">Production</a></div></div></div></div><div><div class="titleGradient">Roles</div><div class="SharedMenu-module--mainBlockMenu--064a3"><div><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/roles/backend-developer/">Backend Developer</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/roles/devops-sre/">DevOps Engineer/SRE</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/roles/engineering-leader/">Engineering Leader</a></div></div></div><div><div class="titleGradient">Benefits</div><div class="SharedMenu-module--mainBlockMenu--064a3"><div><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/use-cases/reduce-mttr/">Reduce MTTR</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/use-cases/improve-developer-productivity/">Improve Dev Productivity</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/use-cases/optimize-logging-costs/">Optimize Logging Costs</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/use-cases/reduce-time-to-market/">Reduce Time to Market</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/use-cases/improve-dora-metrics/">Improove DORA metrics</a></div></div></div><div><div class="titleGradient">Features</div><div class="SharedMenu-module--mainBlockMenu--064a3"><div><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/logs/">Dynamic Logs</a><a class="SharedMenu-module--link--ad046" href="https://lightrun.com/metrics/">Zero-config 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src="/answers/static/question-mark-6a6962885f54fa6c88cf5e38232283da.png" alt="question-mark" class="Hero-module--heroImg--8554a"/><div class="Hero-module--wrapper--29990"><h1>Stuck on an issue?</h1><p class="Hero-module--description--894ed">Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.<br/></p><p class="Hero-module--description--894ed Hero-module--strongText--4ea65">And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.</p><button class="Hero-module--btnHero--4efca">Talk to a Lightrun Answers expert</button></div></div></div></div><section class="sectionWrapper IssueSummary-module--issueSummary--29ccb"><div class="Container-module--container--052f0"><div class="IssueSummary-module--wrapper--5e867"><h2 class="IssueSummary-module--title--1229e">Visualize command gives error: use of undeclared identifier 'CFTypeRef'</h2><a href="https://github.com/facebook/chisel/issues/170" class="IssueSummary-module--linkUnderline--4cc7f">See original GitHub issue</a></div><div class="IssueSummary-module--wrapperGrid--5ff55"><div class="IssueSummary-module--descriptionWrapper--3a1cb"><h3>Issue Description</h3><div class="LeftScrollContainer-module--wrapper--9987b IssueSummary-module--textContainer--3e705 "><div class="LeftScrollContainer-module--content--0b83d"><div><p>This may be related to <a href="https://github.com/facebook/chisel/issues/163">https://github.com/facebook/chisel/issues/163</a></p> <p>When I run <code>vi label</code> were <code>label</code> is some <code>UILabel</code>, I’m getting this:</p> <pre><code>(lldb) vi label error: error: use of undeclared identifier 'CFTypeRef' error: use of undeclared identifier 'label' Traceback (most recent call last): File "/Users/zev/Projects/chisel/fblldb.py", line 83, in runCommand command.run(args, options) File "/Users/zev/Projects/chisel/commands/FBVisualizationCommands.py", line 183, in run _visualize(arguments[0]) File "/Users/zev/Projects/chisel/commands/FBVisualizationCommands.py", line 151, in _visualize if fb.evaluateBooleanExpression('(unsigned long)CFGetTypeID((CFTypeRef)' + target + ') == (unsigned long)CGImageGetTypeID()'): File "/Users/zev/Projects/chisel/fblldbbase.py", line 84, in evaluateBooleanExpression return (int(evaluateIntegerExpression('(BOOL)(' + expression + ')', printErrors)) != 0) File "/Users/zev/Projects/chisel/fblldbbase.py", line 76, in evaluateIntegerExpression output = evaluateExpression('(int)(' + expression + ')', printErrors).replace('\'', '') AttributeError: 'NoneType' object has no attribute 'replace' <p>Here’s a screenshot. As you can see, <code>label</code> is a <code>UILabel</code> that is currently in scope.</p>