forked from OSchip/llvm-project
133 lines
2.7 KiB
C++
133 lines
2.7 KiB
C++
// RUN: %clang_analyze_cc1 -std=c++11 -analyzer-checker=core,alpha.core,debug.ExprInspection -verify %s
|
|
void clang_analyzer_eval(bool);
|
|
|
|
struct X0 { };
|
|
bool operator==(const X0&, const X0&);
|
|
|
|
// PR7287
|
|
struct test { int a[2]; };
|
|
|
|
void t2() {
|
|
test p = {{1,2}};
|
|
test q;
|
|
q = p;
|
|
}
|
|
|
|
bool PR7287(X0 a, X0 b) {
|
|
return operator==(a, b);
|
|
}
|
|
|
|
|
|
// Inlining non-static member operators mistakenly treated 'this' as the first
|
|
// argument for a while.
|
|
|
|
struct IntComparable {
|
|
bool operator==(int x) const {
|
|
return x == 0;
|
|
}
|
|
};
|
|
|
|
void testMemberOperator(IntComparable B) {
|
|
clang_analyzer_eval(B == 0); // expected-warning{{TRUE}}
|
|
}
|
|
|
|
|
|
|
|
namespace UserDefinedConversions {
|
|
class Convertible {
|
|
public:
|
|
operator int() const {
|
|
return 42;
|
|
}
|
|
operator bool() const {
|
|
return true;
|
|
}
|
|
};
|
|
|
|
void test(const Convertible &obj) {
|
|
clang_analyzer_eval((int)obj == 42); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(obj); // expected-warning{{TRUE}}
|
|
}
|
|
}
|
|
|
|
|
|
namespace RValues {
|
|
struct SmallOpaque {
|
|
float x;
|
|
int operator +() const {
|
|
return (int)x;
|
|
}
|
|
};
|
|
|
|
struct LargeOpaque {
|
|
float x[4];
|
|
int operator +() const {
|
|
return (int)x[0];
|
|
}
|
|
};
|
|
|
|
SmallOpaque getSmallOpaque() {
|
|
SmallOpaque obj;
|
|
obj.x = 1.0;
|
|
return obj;
|
|
}
|
|
|
|
LargeOpaque getLargeOpaque() {
|
|
LargeOpaque obj = LargeOpaque();
|
|
obj.x[0] = 1.0;
|
|
return obj;
|
|
}
|
|
|
|
void test(int coin) {
|
|
// Force a cache-out when we try to conjure a temporary region for the operator call.
|
|
// ...then, don't crash.
|
|
clang_analyzer_eval(+(coin ? getSmallOpaque() : getSmallOpaque())); // expected-warning{{UNKNOWN}}
|
|
clang_analyzer_eval(+(coin ? getLargeOpaque() : getLargeOpaque())); // expected-warning{{UNKNOWN}}
|
|
}
|
|
}
|
|
|
|
namespace SynthesizedAssignment {
|
|
struct A {
|
|
int a;
|
|
A& operator=(A& other) { a = -other.a; return *this; }
|
|
A& operator=(A&& other) { a = other.a+1; return *this; }
|
|
};
|
|
|
|
struct B {
|
|
int x;
|
|
A a[3];
|
|
B& operator=(B&) = default;
|
|
B& operator=(B&&) = default;
|
|
};
|
|
|
|
// This used to produce a warning about the iteration variable in the
|
|
// synthesized assignment operator being undefined.
|
|
void testNoWarning() {
|
|
B v, u;
|
|
u = v;
|
|
}
|
|
|
|
void testNoWarningMove() {
|
|
B v, u;
|
|
u = static_cast<B &&>(v);
|
|
}
|
|
|
|
void testConsistency() {
|
|
B v, u;
|
|
v.a[1].a = 47;
|
|
v.a[2].a = 42;
|
|
u = v;
|
|
clang_analyzer_eval(u.a[1].a == -47); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(u.a[2].a == -42); // expected-warning{{TRUE}}
|
|
}
|
|
|
|
void testConsistencyMove() {
|
|
B v, u;
|
|
v.a[1].a = 47;
|
|
v.a[2].a = 42;
|
|
u = static_cast<B &&>(v);
|
|
clang_analyzer_eval(u.a[1].a == 48); // expected-warning{{TRUE}}
|
|
clang_analyzer_eval(u.a[2].a == 43); // expected-warning{{TRUE}}
|
|
}
|
|
}
|