You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
144 lines
3.1 KiB
144 lines
3.1 KiB
// RUN: %clang_cc1 -std=c++11 -fsyntax-only -fblocks -Wno-objc-root-class -analyze -analyzer-checker=core,deadcode,debug.ExprInspection -analyzer-config inline-lambdas=true -verify %s
|
|
|
|
int clang_analyzer_eval(int);
|
|
|
|
@interface Super
|
|
- (void)superMethod;
|
|
@end
|
|
|
|
@interface Sub : Super {
|
|
int _ivar1;
|
|
int _ivar2;
|
|
}
|
|
@end
|
|
|
|
@implementation Sub
|
|
- (void)callMethodOnSuperInCXXLambda; {
|
|
// Explicit capture.
|
|
[self]() {
|
|
[super superMethod];
|
|
}();
|
|
|
|
// Implicit capture.
|
|
[=]() {
|
|
[super superMethod];
|
|
}();
|
|
}
|
|
|
|
// Make sure to properly handle super-calls when a block captures
|
|
// a local variable named 'self'.
|
|
- (void)callMethodOnSuperInCXXLambdaWithRedefinedSelf; {
|
|
/*__weak*/ Sub *weakSelf = self;
|
|
// Implicit capture. (Sema outlaws explicit capture of a redefined self
|
|
// and a call to super [which uses the original self]).
|
|
[=]() {
|
|
Sub *self = weakSelf;
|
|
[=]() {
|
|
[super superMethod];
|
|
}();
|
|
}();
|
|
}
|
|
|
|
- (void)swapIvars {
|
|
int tmp = _ivar1;
|
|
_ivar1 = _ivar2;
|
|
_ivar2 = tmp;
|
|
}
|
|
|
|
- (void)callMethodOnSelfInCXXLambda; {
|
|
_ivar1 = 7;
|
|
_ivar2 = 8;
|
|
[self]() {
|
|
[self swapIvars];
|
|
}();
|
|
|
|
clang_analyzer_eval(_ivar1 == 8); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(_ivar2 == 7); // expected-warning{{TRUE}}
|
|
}
|
|
|
|
@end
|
|
|
|
int getValue();
|
|
void useValue(int v);
|
|
|
|
void castToBlockNoDeadStore() {
|
|
int v = getValue(); // no-warning
|
|
|
|
(void)(void(^)())[v]() { // This capture should count as a use, so no dead store warning above.
|
|
};
|
|
}
|
|
|
|
void takesBlock(void(^block)());
|
|
|
|
void passToFunctionTakingBlockNoDeadStore() {
|
|
int v = 7; // no-warning
|
|
int x = 8; // no-warning
|
|
takesBlock([&v, x]() {
|
|
(void)v;
|
|
});
|
|
}
|
|
|
|
void castToBlockAndInline() {
|
|
int result = ((int(^)(int))[](int p) {
|
|
return p;
|
|
})(7);
|
|
|
|
clang_analyzer_eval(result == 7); // expected-warning{{TRUE}}
|
|
}
|
|
|
|
void castToBlockWithCaptureAndInline() {
|
|
int y = 7;
|
|
|
|
auto lambda = [y]{ return y; };
|
|
int(^block)() = lambda;
|
|
|
|
int result = block();
|
|
clang_analyzer_eval(result == 7); // expected-warning{{TRUE}}
|
|
}
|
|
|
|
void castMutableLambdaToBlock() {
|
|
int x = 0;
|
|
|
|
auto lambda = [x]() mutable {
|
|
x = x + 1;
|
|
return x;
|
|
};
|
|
|
|
// The block should copy the lambda before capturing.
|
|
int(^block)() = lambda;
|
|
|
|
int r1 = block();
|
|
clang_analyzer_eval(r1 == 1); // expected-warning{{TRUE}}
|
|
|
|
int r2 = block();
|
|
clang_analyzer_eval(r2 == 2); // expected-warning{{TRUE}}
|
|
|
|
// Because block copied the lambda, r3 should be 1.
|
|
int r3 = lambda();
|
|
clang_analyzer_eval(r3 == 1); // expected-warning{{TRUE}}
|
|
|
|
// Aliasing the block shouldn't copy the lambda.
|
|
int(^blockAlias)() = block;
|
|
|
|
int r4 = blockAlias();
|
|
clang_analyzer_eval(r4 == 3); // expected-warning{{TRUE}}
|
|
|
|
int r5 = block();
|
|
clang_analyzer_eval(r5 == 4); // expected-warning{{TRUE}}
|
|
|
|
// Another copy of lambda
|
|
int(^blockSecondCopy)() = lambda;
|
|
int r6 = blockSecondCopy();
|
|
clang_analyzer_eval(r6 == 2); // expected-warning{{TRUE}}
|
|
}
|
|
|
|
void castLambdaInLocalBlock() {
|
|
// Make sure we don't emit a spurious diagnostic about the address of a block
|
|
// escaping in the implicit conversion operator method for lambda-to-block
|
|
// conversions.
|
|
auto lambda = []{ }; // no-warning
|
|
|
|
void(^block)() = lambda;
|
|
(void)block;
|
|
}
|