[clang] [alpha.webkit.UnretainedCallArgsChecker] Treat NSStringFromSelector and alike as trivial and returns a retained value (PR #161135)

[Ryosuke Niwa via cfe-commits]

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@@ -84,6 +84,15 @@ typedef CVImageBufferRef CVPixelBufferRef;
 typedef signed int CVReturn;
 CVReturn CVPixelBufferCreateWithIOSurface(CFAllocatorRef allocator, IOSurfaceRef surface, CFDictionaryRef pixelBufferAttributes, CF_RETURNS_RETAINED CVPixelBufferRef * pixelBufferOut);
 
+extern "C" NSString *NSStringFromSelector(SEL aSelector);
+extern "C" SEL NSSelectorFromString(NSString *aSelectorName);
+
+extern "C" NSString *NSStringFromClass(Class aClass);
+extern "C" Class NSClassFromString(NSString *aClassName);
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rniwa wrote:

oh, I should probably the remove one in line 101. I didn't notice it.

https://github.com/llvm/llvm-project/pull/161135