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| // RUN: %clang_analyze_cc1 -std=c++14 \
// RUN: -analyzer-checker=core,apiModeling.llvm.CastValue,debug.ExprInspection\
// RUN: -analyzer-output=text -verify %s 2>&1 | FileCheck %s
#include "Inputs/llvm.h"
void clang_analyzer_printState();
namespace clang {
struct Shape {};
class Triangle : public Shape {};
class Circle : public Shape {};
class Square : public Shape {};
} // namespace clang
using namespace llvm;
using namespace clang;
void evalNonNullParamNonNullReturn(const Shape *S) {
const auto *C = dyn_cast_or_null<Circle>(S);
// expected-note@-1 {{Assuming 'S' is a 'Circle'}}
// expected-note@-2 {{'C' initialized here}}
// FIXME: We assumed that 'S' is a 'Circle' therefore it is not a 'Square'.
if (dyn_cast_or_null<Square>(S)) {
// expected-note@-1 {{Assuming 'S' is not a 'Square'}}
// expected-note@-2 {{Taking false branch}}
return;
}
clang_analyzer_printState();
// CHECK: "dynamic_types": [
// CHECK-NEXT: { "region": "SymRegion{reg_$0<const struct clang::Shape * S>}", "dyn_type": "const class clang::Circle", "sub_classable": true }
// CHECK-NEXT: ],
// CHECK-NEXT: "dynamic_casts": [
// CHECK: { "region": "SymRegion{reg_$0<const struct clang::Shape * S>}", "casts": [
// CHECK-NEXT: { "from": "const struct clang::Shape *", "to": "const class clang::Circle *", "kind": "success" },
// CHECK-NEXT: { "from": "const struct clang::Shape *", "to": "const class clang::Square *", "kind": "fail" }
// CHECK-NEXT: ]}
(void)(1 / !C);
// expected-note@-1 {{'C' is non-null}}
// expected-note@-2 {{Division by zero}}
// expected-warning@-3 {{Division by zero}}
}
|