forked from OSchip/llvm-project
75 lines
1.4 KiB
C++
75 lines
1.4 KiB
C++
// RUN: %clang_analyze_cc1 -analyzer-checker=core,debug.ExprInspection -analyzer-store=region -verify %s
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void clang_analyzer_eval(bool);
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bool PR14634(int x) {
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double y = (double)x;
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return !y;
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}
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bool PR14634_implicit(int x) {
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double y = (double)x;
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return y;
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}
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void intAsBoolAsSwitchCondition(int c) {
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switch ((bool)c) { // expected-warning {{switch condition has boolean value}}
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case 0:
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break;
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}
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switch ((int)(bool)c) { // no-warning
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case 0:
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break;
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}
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}
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int *&castToIntPtrLValueRef(char *p) {
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return (int *&)*(int *)p;
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}
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bool testCastToIntPtrLValueRef(char *p, int *s) {
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return castToIntPtrLValueRef(p) != s; // no-crash
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}
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int *&&castToIntPtrRValueRef(char *p) {
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return (int *&&)*(int *)p;
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}
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bool testCastToIntPtrRValueRef(char *p, int *s) {
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return castToIntPtrRValueRef(p) != s; // no-crash
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}
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bool retrievePointerFromBoolean(int *p) {
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bool q;
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*reinterpret_cast<int **>(&q) = p;
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return q;
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}
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namespace base_to_derived {
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struct A {};
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struct B : public A{};
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void foo(A* a) {
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B* b = (B* ) a;
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A* a2 = (A *) b;
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clang_analyzer_eval(a2 == a); // expected-warning{{TRUE}}
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}
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}
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namespace base_to_derived_double_inheritance {
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struct A {
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int x;
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};
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struct B {
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int y;
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};
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struct C : A, B {};
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void foo(B *b) {
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C *c = (C *)b;
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b->y = 1;
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clang_analyzer_eval(c->x); // expected-warning{{UNKNOWN}}
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clang_analyzer_eval(c->y); // expected-warning{{TRUE}}
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}
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}
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