[cxx-interop] Adjust the test for default construction of C types

egorzhdan · egorzhdan · commit 82530c6e238f · 2025-10-09T20:04:01.000+01:00
`pthread_mutexattr_t` should be getting its implicit default constructor instantiated by Clang. Due to a Clang bug, the constructor was being instantiated, `needsImplicitDefaultConstructor` was being set to `false`, but the constructor wasn't being added to `decl->members()`. This prevented Swift from correctly importing the constructor. This relies on John's change: llvm/llvm-project#161933. rdar://161999293
diff --git a/test/Interop/Cxx/objc-correctness/pthread_mutexattr_t.swift b/test/Interop/Cxx/objc-correctness/pthread_mutexattr_t.swift
@@ -3,4 +3,4 @@
 
 import Darwin
 
-_ = pthread_mutexattr_t() // expected-warning {{'init()' is deprecated: This zero-initializes the backing memory of the struct}}
+_ = pthread_mutexattr_t() // expected-no-diagnostics

Original file line number	Diff line number	Diff line change
`@@ -3,4 +3,4 @@`
`3`	`3`
`4`	`4`	`import Darwin`
`5`	`5`
`6`		`-_ = pthread_mutexattr_t() // expected-warning {{'init()' is deprecated: This zero-initializes the backing memory of the struct}}`
	`6`	`+_ = pthread_mutexattr_t() // expected-no-diagnostics`