derek.holloway
7502bf64a4
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39 lines
1.6 KiB
Objective-C
39 lines
1.6 KiB
Objective-C
// RUN: %clang_cc1 -fblocks -fobjc-arc -Wnullable-to-nonnull-conversion -fsyntax-only -verify -Wno-objc-root-class %s
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// RUN: %clang_cc1 -fblocks -fobjc-arc -Wnullable-to-nonnull-conversion -fsyntax-only -verify -Wno-objc-root-class -DNOWARN %s
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@interface NSString
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+ (NSString*
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#ifndef NOWARN
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_Nullable
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#else
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_Nonnull
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#endif
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) stringWithUTF8String:(const char*)x;
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@end
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void takesNonNull(NSString * _Nonnull ptr);
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void testBoxedString(void) {
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// No diagnostic emitted as this doesn't need a stringWithUTF8String message
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// send.
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takesNonNull(@("hey"));
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takesNonNull(@(u8"hey"));
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// If the string isn't a valid UTF-8 string, a diagnostic is emitted since the
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// boxed expression turns into a message send.
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takesNonNull(@(u8"\xFF")); // expected-warning {{string is ill-formed as UTF-8}}
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takesNonNull(@(u8"\xC0\x80")); // expected-warning {{string is ill-formed as UTF-8}}
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const char *str = "hey";
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takesNonNull([NSString stringWithUTF8String:str]);
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takesNonNull(@(str));
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#ifndef NOWARN
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// expected-warning@-7 {{implicit conversion from nullable pointer 'NSString * _Nullable' to non-nullable pointer type 'NSString * _Nonnull'}}
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// expected-warning@-7 {{implicit conversion from nullable pointer 'NSString * _Nullable' to non-nullable pointer type 'NSString * _Nonnull'}}
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// expected-warning@-5 {{implicit conversion from nullable pointer 'NSString * _Nullable' to non-nullable pointer type 'NSString * _Nonnull'}}
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// expected-warning@-5 {{implicit conversion from nullable pointer 'NSString * _Nullable' to non-nullable pointer type 'NSString * _Nonnull'}}
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#endif
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}
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