66 lines
1.1 KiB
Text
66 lines
1.1 KiB
Text
// RUN: %clang_cc1 -fsyntax-only -Wno-objc-root-class -verify %s
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class S {
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public:
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int a_;
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void s(int a) {
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a_ = a_; // expected-warning {{assigning field to itself}}
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// Don't really care about this one either way.
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this->a_ = a_; // expected-warning {{assigning field to itself}}
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a_ += a_; // Shouldn't warn.
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}
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};
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void f0(S* s) {
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// Would be nice to have, but not important.
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s->a_ = s->a_;
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}
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void f1(S* s, S* t) {
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// Shouldn't warn.
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t->a_ = s->a_;
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}
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struct T {
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S* s_;
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};
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void f2(T* t) {
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// Would be nice to have, but even less important.
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t->s_->a_ = t->s_->a_;
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}
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void f3(T* t, T* t2) {
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// Shouldn't warn.
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t2->s_->a_ = t->s_->a_;
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}
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void f4(int i) {
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// This is a common pattern to silence "parameter unused". Shouldn't warn.
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i = i;
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int j = 0;
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j = j; // Likewise.
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}
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@interface I {
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int a_;
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}
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@end
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@implementation I
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- (void)setA:(int)a {
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a_ = a_; // expected-warning {{assigning instance variable to itself}}
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}
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- (void)foo:(I*)i {
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// Don't care much about this warning.
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i->a_ = i->a_; // expected-warning {{assigning instance variable to itself}}
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// Shouldn't warn.
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a_ = i->a_;
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i->a_ = a_;
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}
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@end
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