12cbc8cbf0
'(self.prop)' produces a surprising AST where ParenExpr resides inside `PseudoObjectExpr. This breaks ObjCMethodCall::getMessageKind() which in turn causes us to perform unnecessary dynamic dispatch bifurcation when evaluating body-farmed property accessors, which in turn causes us to explore infeasible paths.
53 lines
1.2 KiB
Objective-C
53 lines
1.2 KiB
Objective-C
// RUN: %clang_analyze_cc1 -w %s -verify \
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// RUN: -analyzer-checker=core,alpha.core,debug.ExprInspection
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#ifdef HEADER // A clever trick to avoid splitting up the test.
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@interface NSObject
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@end
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@interface HeaderClass : NSObject
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@property NSObject *prop;
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@end
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#else
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#define HEADER
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#include "ObjCProperties.m"
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@implementation HeaderClass
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- (void)foo {
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if ((self.prop)) {
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}
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// This test tests that no dynamic bifurcation is performed on the property.
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// The TRUE/FALSE dilemma correctly arises from eagerly-assume behavior
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// inside the if-statement. The dynamic bifurcation at (self.prop) inside
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// the if-statement was causing an UNKNOWN to show up as well due to
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// extra parentheses being caught inside PseudoObjectExpr.
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// This should not be UNKNOWN.
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clang_analyzer_eval(self.prop); // expected-warning{{TRUE}}
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// expected-warning@-1{{FALSE}}
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}
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@end
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// The point of this test cases is to exercise properties in the static
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// analyzer
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@interface MyClass {
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@private
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id _X;
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}
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- (id)initWithY:(id)Y;
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@property(copy, readwrite) id X;
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@end
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@implementation MyClass
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@synthesize X = _X;
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- (id)initWithY:(id)Y {
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self.X = Y;
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return self;
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}
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@end
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#endif
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