forked from OSchip/llvm-project
48 lines
1.6 KiB
C++
48 lines
1.6 KiB
C++
// 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 2>&1 | FileCheck %s
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#include "Inputs/llvm.h"
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void clang_analyzer_printState();
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namespace clang {
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struct Shape {};
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class Triangle : public Shape {};
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class Circle : public Shape {};
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class Square : 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 evalNonNullParamNonNullReturn(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 a 'Circle'}}
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// expected-note@-2 {{'C' initialized here}}
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// FIXME: We assumed that 'S' is a 'Circle' therefore it is not a 'Square'.
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if (dyn_cast_or_null<Square>(S)) {
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// expected-note@-1 {{Assuming 'S' is not a 'Square'}}
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// expected-note@-2 {{Taking false branch}}
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return;
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}
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clang_analyzer_printState();
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// CHECK: "dynamic_types": [
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// CHECK-NEXT: { "region": "SymRegion{reg_$0<const struct clang::Shape * S>}", "dyn_type": "const class clang::Circle", "sub_classable": true }
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// CHECK-NEXT: ],
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// CHECK-NEXT: "dynamic_casts": [
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// CHECK: { "region": "SymRegion{reg_$0<const struct clang::Shape * S>}", "casts": [
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// CHECK-NEXT: { "from": "const struct clang::Shape *", "to": "const class clang::Circle *", "kind": "success" },
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// CHECK-NEXT: { "from": "const struct clang::Shape *", "to": "const class clang::Square *", "kind": "fail" }
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// CHECK-NEXT: ]}
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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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