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// RUN: %clang_cc1 -fblocks -fobjc-arc -Wnullable-to-nonnull-conversion -fsyntax-only -verify -Wno-objc-root-class %s
// RUN: %clang_cc1 -fblocks -fobjc-arc -Wnullable-to-nonnull-conversion -fsyntax-only -verify -Wno-objc-root-class -DNOWARN %s
@interface NSString
+ (NSString*
#ifndef NOWARN
_Nullable
#else
_Nonnull
#endif
) stringWithUTF8String:(const char*)x;
@end
void takesNonNull(NSString * _Nonnull ptr);
void testBoxedString() {
const char *str = "hey";
takesNonNull([NSString stringWithUTF8String:str]);
takesNonNull(@(str));
#ifndef NOWARN
// expected-warning@-3 {{implicit conversion from nullable pointer 'NSString * _Nullable' to non-nullable pointer type 'NSString * _Nonnull'}}
// expected-warning@-3 {{implicit conversion from nullable pointer 'NSString * _Nullable' to non-nullable pointer type 'NSString * _Nonnull'}}
#else
// expected-no-diagnostics
#endif
}
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