forked from OSchip/llvm-project
59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
// RUN: %clang_analyze_cc1 -analyzer-checker=core,debug.ExprInspection -std=c++11 -verify %s
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// RUN: %clang_analyze_cc1 -analyzer-checker=core,debug.ExprInspection -std=c++17 -verify %s
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void clang_analyzer_eval(bool);
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template <typename T> struct AddressVector {
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T *buf[10];
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int len;
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AddressVector() : len(0) {}
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void push(T *t) {
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buf[len] = t;
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++len;
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}
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};
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class ClassWithoutDestructor {
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AddressVector<ClassWithoutDestructor> &v;
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public:
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ClassWithoutDestructor(AddressVector<ClassWithoutDestructor> &v) : v(v) {
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v.push(this);
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}
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ClassWithoutDestructor(ClassWithoutDestructor &&c) : v(c.v) { v.push(this); }
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ClassWithoutDestructor(const ClassWithoutDestructor &c) : v(c.v) {
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v.push(this);
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}
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};
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ClassWithoutDestructor make1(AddressVector<ClassWithoutDestructor> &v) {
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return ClassWithoutDestructor(v);
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}
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ClassWithoutDestructor make2(AddressVector<ClassWithoutDestructor> &v) {
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return make1(v);
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}
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ClassWithoutDestructor make3(AddressVector<ClassWithoutDestructor> &v) {
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return make2(v);
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}
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void testMultipleReturns() {
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AddressVector<ClassWithoutDestructor> v;
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ClassWithoutDestructor c = make3(v);
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#if __cplusplus >= 201703L
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// FIXME: Both should be TRUE.
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clang_analyzer_eval(v.len == 1); // expected-warning{{TRUE}}
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clang_analyzer_eval(v.buf[0] == &c); // expected-warning{{FALSE}}
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#else
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clang_analyzer_eval(v.len == 5); // expected-warning{{TRUE}}
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clang_analyzer_eval(v.buf[0] != v.buf[1]); // expected-warning{{TRUE}}
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clang_analyzer_eval(v.buf[1] != v.buf[2]); // expected-warning{{TRUE}}
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clang_analyzer_eval(v.buf[2] != v.buf[3]); // expected-warning{{TRUE}}
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clang_analyzer_eval(v.buf[3] != v.buf[4]); // expected-warning{{TRUE}}
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clang_analyzer_eval(v.buf[4] == &c); // expected-warning{{TRUE}}
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#endif
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}
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