216 lines
6.1 KiB
C++
216 lines
6.1 KiB
C++
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// RUN: %clang_analyze_cc1 -std=c++14 \
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// RUN: -analyzer-checker=core,apiModeling.llvm.CastValue,debug.ExprInspection\
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// RUN: -analyzer-output=text -verify %s
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#include "Inputs/llvm.h"
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namespace clang {
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struct Shape {
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template <typename T>
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const T *castAs() const;
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template <typename T>
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const T *getAs() const;
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};
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class Triangle : public Shape {};
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class Rectangle : public Shape {};
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class Hexagon : public Shape {};
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class Circle : public Shape {};
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} // namespace clang
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using namespace llvm;
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using namespace clang;
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void evalReferences(const Shape &S) {
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const auto &C = dyn_cast<Circle>(S);
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// expected-note@-1 {{Assuming 'S' is not a 'Circle'}}
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// expected-note@-2 {{Dereference of null pointer}}
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// expected-warning@-3 {{Dereference of null pointer}}
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}
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void evalNonNullParamNonNullReturnReference(const Shape &S) {
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const auto *C = dyn_cast_or_null<Circle>(S);
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// expected-note@-1 {{'C' initialized here}}
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if (!dyn_cast_or_null<Circle>(C)) {
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// expected-note@-1 {{'C' is a 'Circle'}}
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// expected-note@-2 {{Taking false branch}}
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return;
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}
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if (dyn_cast_or_null<Triangle>(C)) {
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// expected-note@-1 {{Assuming 'C' is not a 'Triangle'}}
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// expected-note@-2 {{Taking false branch}}
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return;
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}
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if (dyn_cast_or_null<Rectangle>(C)) {
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// expected-note@-1 {{Assuming 'C' is not a 'Rectangle'}}
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// expected-note@-2 {{Taking false branch}}
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return;
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}
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if (dyn_cast_or_null<Hexagon>(C)) {
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// expected-note@-1 {{Assuming 'C' is not a 'Hexagon'}}
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// expected-note@-2 {{Taking false branch}}
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return;
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}
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if (isa<Triangle>(C)) {
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// expected-note@-1 {{'C' is not a 'Triangle'}}
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// expected-note@-2 {{Taking false branch}}
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return;
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}
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if (isa<Triangle, Rectangle>(C)) {
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// expected-note@-1 {{'C' is neither a 'Triangle' nor a 'Rectangle'}}
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// expected-note@-2 {{Taking false branch}}
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return;
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}
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if (isa<Triangle, Rectangle, Hexagon>(C)) {
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// expected-note@-1 {{'C' is neither a 'Triangle' nor a 'Rectangle' nor a 'Hexagon'}}
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// expected-note@-2 {{Taking false branch}}
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return;
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}
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if (isa<Circle, Rectangle, Hexagon>(C)) {
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// expected-note@-1 {{'C' is a 'Circle'}}
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// expected-note@-2 {{Taking true branch}}
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(void)(1 / !C);
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// expected-note@-1 {{'C' is non-null}}
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// expected-note@-2 {{Division by zero}}
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// expected-warning@-3 {{Division by zero}}
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}
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}
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void evalNonNullParamNonNullReturn(const Shape *S) {
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const auto *C = cast<Circle>(S);
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// expected-note@-1 {{'S' is a 'Circle'}}
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// expected-note@-2 {{'C' initialized here}}
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if (!dyn_cast_or_null<Circle>(C)) {
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// expected-note@-1 {{'C' is a 'Circle'}}
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// expected-note@-2 {{Taking false branch}}
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return;
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}
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if (dyn_cast_or_null<Triangle>(C)) {
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// expected-note@-1 {{Assuming 'C' is not a 'Triangle'}}
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// expected-note@-2 {{Taking false branch}}
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return;
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}
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if (dyn_cast_or_null<Rectangle>(C)) {
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// expected-note@-1 {{Assuming 'C' is not a 'Rectangle'}}
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// expected-note@-2 {{Taking false branch}}
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return;
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}
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if (dyn_cast_or_null<Hexagon>(C)) {
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// expected-note@-1 {{Assuming 'C' is not a 'Hexagon'}}
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// expected-note@-2 {{Taking false branch}}
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return;
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}
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if (isa<Triangle>(C)) {
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// expected-note@-1 {{'C' is not a 'Triangle'}}
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// expected-note@-2 {{Taking false branch}}
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return;
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}
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if (isa<Triangle, Rectangle>(C)) {
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// expected-note@-1 {{'C' is neither a 'Triangle' nor a 'Rectangle'}}
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// expected-note@-2 {{Taking false branch}}
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return;
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}
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if (isa<Triangle, Rectangle, Hexagon>(C)) {
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// expected-note@-1 {{'C' is neither a 'Triangle' nor a 'Rectangle' nor a 'Hexagon'}}
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// expected-note@-2 {{Taking false branch}}
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return;
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}
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if (isa<Circle, Rectangle, Hexagon>(C)) {
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// expected-note@-1 {{'C' is a 'Circle'}}
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// expected-note@-2 {{Taking true branch}}
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(void)(1 / !C);
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// expected-note@-1 {{'C' is non-null}}
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// expected-note@-2 {{Division by zero}}
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// expected-warning@-3 {{Division by zero}}
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}
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}
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void evalNonNullParamNullReturn(const Shape *S) {
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const auto *C = dyn_cast_or_null<Circle>(S);
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// expected-note@-1 {{Assuming 'S' is not a 'Circle'}}
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if (const auto *T = dyn_cast_or_null<Triangle>(S)) {
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// expected-note@-1 {{Assuming 'S' is a 'Triangle'}}
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// expected-note@-2 {{'T' initialized here}}
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// expected-note@-3 {{'T' is non-null}}
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// expected-note@-4 {{Taking true branch}}
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(void)(1 / !T);
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// expected-note@-1 {{'T' is non-null}}
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// expected-note@-2 {{Division by zero}}
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// expected-warning@-3 {{Division by zero}}
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}
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}
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void evalNullParamNullReturn(const Shape *S) {
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const auto *C = dyn_cast_or_null<Circle>(S);
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// expected-note@-1 {{Assuming null pointer is passed into cast}}
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// expected-note@-2 {{'C' initialized to a null pointer value}}
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(void)(1 / (bool)C);
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// expected-note@-1 {{Division by zero}}
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// expected-warning@-2 {{Division by zero}}
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}
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void evalZeroParamNonNullReturnPointer(const Shape *S) {
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const auto *C = S->castAs<Circle>();
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// expected-note@-1 {{'S' is a 'Circle'}}
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// expected-note@-2 {{'C' initialized here}}
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(void)(1 / !C);
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// expected-note@-1 {{'C' is non-null}}
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// expected-note@-2 {{Division by zero}}
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// expected-warning@-3 {{Division by zero}}
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}
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void evalZeroParamNonNullReturn(const Shape &S) {
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const auto *C = S.castAs<Circle>();
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// expected-note@-1 {{'C' initialized here}}
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(void)(1 / !C);
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// expected-note@-1 {{'C' is non-null}}
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// expected-note@-2 {{Division by zero}}
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// expected-warning@-3 {{Division by zero}}
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}
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void evalZeroParamNullReturn(const Shape *S) {
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const auto &C = S->getAs<Circle>();
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// expected-note@-1 {{Assuming 'S' is not a 'Circle'}}
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// expected-note@-2 {{Storing null pointer value}}
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// expected-note@-3 {{'C' initialized here}}
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if (!dyn_cast_or_null<Triangle>(S)) {
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// expected-note@-1 {{Assuming 'S' is a 'Triangle'}}
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// expected-note@-2 {{Taking false branch}}
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return;
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}
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if (!dyn_cast_or_null<Triangle>(S)) {
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// expected-note@-1 {{'S' is a 'Triangle'}}
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// expected-note@-2 {{Taking false branch}}
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return;
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}
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(void)(1 / (bool)C);
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// expected-note@-1 {{Division by zero}}
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// expected-warning@-2 {{Division by zero}}
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}
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