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9658d895c8
Converting a pointer to an integer whose result cannot represented in the integer type is undefined behavior is C and prohibited in C++. C++ already has a diagnostic when casting. This adds a diagnostic for C. Since this diagnostic uses the range of the conversion it also modifies int-to-pointer-cast diagnostic to use a range. Fixes PR8718: No warning on casting between pointer and non-pointer-sized int Differential Revision: https://reviews.llvm.org/D72231
47 lines
1.5 KiB
Objective-C
47 lines
1.5 KiB
Objective-C
// RUN: %clang_cc1 -fsyntax-only -verify -Wno-pointer-to-int-cast -Wno-objc-root-class %s
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// rdar://5986251
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@protocol SomeProtocol
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- (void) bar;
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@end
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void bar();
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void foo(id x) {
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bar((short<SomeProtocol>)x); // expected-error {{expected ')'}} expected-note {{to match this '('}}
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bar((<SomeProtocol>)x); // expected-warning {{protocol has no object type specified; defaults to qualified 'id'}}
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[(<SomeProtocol>)x bar]; // expected-warning {{protocol has no object type specified; defaults to qualified 'id'}}
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}
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@protocol MyProtocol
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- (void)doSomething;
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@end
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@interface MyClass
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- (void)m1:(id <MyProtocol> const)arg1;
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// FIXME: provide a better diagnostic (no typedef).
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- (void)m2:(id <MyProtocol> short)arg1; // expected-error {{'short type-name' is invalid}}
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@end
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typedef int NotAnObjCObjectType;
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// GCC doesn't diagnose this.
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NotAnObjCObjectType <SomeProtocol> *obj; // expected-error {{invalid protocol qualifiers on non-ObjC type}}
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typedef struct objc_class *Class;
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Class <SomeProtocol> UnfortunateGCCExtension;
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// rdar://10238337
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@protocol Broken @end
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@interface Crash @end
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@implementation Crash
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- (void)crashWith:(<Broken>)a { // expected-warning {{protocol has no object type specified; defaults to qualified 'id'}}
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}
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@end
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typedef <SomeProtocol> id TwoTypeSpecs; // expected-warning{{no object type specified}}
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// expected-error@-1{{typedef redefinition with different types ('id<SomeProtocol>' vs 'id')}}
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// expected-error@-2{{expected ';' after top level declarator}}
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