b22a5d4617
We should look through implicit casts before determining the type of the arguments, and only allow explicit cast to _Nonnull to suppress warning ``` void foo(NSString *_Nonnull); foo((NSString * _Nonnull)nil); // no-warning id obj = nil; foo(obj); // should warning here (implicit cast id to NSString *_Nonnull) ``` Reviewed By: xazax.hun, steakhal Differential Revision: https://reviews.llvm.org/D154221
31 lines
741 B
Plaintext
31 lines
741 B
Plaintext
// RUN: %clang_analyze_cc1 -w -analyzer-checker=core,nullability\
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// RUN: -analyzer-output=text -verify %s
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// RUN: %clang_analyze_cc1 -w -analyzer-checker=core,nullability\
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// RUN: -analyzer-output=text -verify %s -fobjc-arc
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#define nil ((id)0)
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@interface Param
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@end
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@interface Base
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- (void)foo:(Param *_Nonnull)param;
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@end
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@interface Derived : Base
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@end
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@implementation Derived
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- (void)foo:(Param *)param {
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// FIXME: Why do we not emit the warning under ARC?
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[super foo:param];
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[self foo:nil];
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// expected-warning@-1{{nil passed to a callee that requires a non-null 1st parameter}}
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// expected-note@-2 {{nil passed to a callee that requires a non-null 1st parameter}}
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}
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@end
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