Merge pull request #15594 from jketema/destructors

C++: Add additional IR tests for destructors

Author: jketema

cpp/ql/test/library-tests/ir/ir/PrintAST.expected

@@ -6,6 +6,7 @@ missingOperandType
 duplicateChiOperand
 sideEffectWithoutPrimary
 instructionWithoutSuccessor
+| ir.cpp:2138:9:2138:9 | Chi: x | Instruction 'Chi: x' has no successors in function '$@'. | ir.cpp:2136:6:2136:35 | void initialization_with_destructor(bool, char) | void initialization_with_destructor(bool, char) |
 ambiguousSuccessors
 unexplainedLoop
 unnecessaryPhiInstruction

cpp/ql/test/library-tests/ir/ir/aliased_ir.expected

@@ -6,6 +6,7 @@ missingOperandType
 duplicateChiOperand
 sideEffectWithoutPrimary
 instructionWithoutSuccessor
+| ir.cpp:2138:9:2138:9 | Chi: x | Instruction 'Chi: x' has no successors in function '$@'. | ir.cpp:2136:6:2136:35 | void initialization_with_destructor(bool, char) | void initialization_with_destructor(bool, char) |
 ambiguousSuccessors
 unexplainedLoop
 unnecessaryPhiInstruction

cpp/ql/test/library-tests/ir/ir/aliased_ssa_consistency.expected

@@ -1065,6 +1065,8 @@ struct vector {
         bool operator!=(iterator right) const;
     };
 
+    vector(T);
+    ~vector();
     iterator begin() const;
     iterator end() const;
 };
@@ -2120,4 +2122,36 @@ void call_as_child_of_ConditionDeclExpr() {
   if(HasOperatorBool b = HasOperatorBool()) {}
 }
 
-// semmle-extractor-options: -std=c++17 --clang
+class ClassWithDestructor {
+    char *x;
+public:
+    ClassWithDestructor() { x = new char; }
+    ~ClassWithDestructor() { delete x; }
+
+    void set_x(char y) { *x = y; }
+};
+
+constexpr bool initialization_with_destructor_bool = true;
+
+void initialization_with_destructor(bool b, char c) {
+    if (ClassWithDestructor x; b)
+        x.set_x('a');
+
+    if constexpr (ClassWithDestructor x; initialization_with_destructor_bool)
+        x.set_x('a');
+
+    switch(ClassWithDestructor x; c) {
+        case 'a':
+          x.set_x('a');
+          break;
+        default:
+          x.set_x('b');
+          break;
+    }
+
+    ClassWithDestructor x;
+    for(vector<ClassWithDestructor> ys(x); ClassWithDestructor y : ys)
+      y.set_x('a');
+}
+
+// semmle-extractor-options: -std=c++20 --clang

cpp/ql/test/library-tests/ir/ir/aliased_ssa_consistency_unsound.expected

@@ -6,6 +6,10 @@ missingOperandType
 duplicateChiOperand
 sideEffectWithoutPrimary
 instructionWithoutSuccessor
+| ir.cpp:2138:9:2138:9 | IndirectMayWriteSideEffect: x | Instruction 'IndirectMayWriteSideEffect: x' has no successors in function '$@'. | ir.cpp:2136:6:2136:35 | void initialization_with_destructor(bool, char) | void initialization_with_destructor(bool, char) |
+| ir.cpp:2140:39:2140:39 | IndirectMayWriteSideEffect: call to ClassWithDestructor | Instruction 'IndirectMayWriteSideEffect: call to ClassWithDestructor' has no successors in function '$@'. | ir.cpp:2136:6:2136:35 | void initialization_with_destructor(bool, char) | void initialization_with_destructor(bool, char) |
+| ir.cpp:2140:42:2140:76 | Constant: initialization_with_destructor_bool | Instruction 'Constant: initialization_with_destructor_bool' has no successors in function '$@'. | ir.cpp:2136:6:2136:35 | void initialization_with_destructor(bool, char) | void initialization_with_destructor(bool, char) |
+| ir.cpp:2141:9:2141:9 | IndirectMayWriteSideEffect: x | Instruction 'IndirectMayWriteSideEffect: x' has no successors in function '$@'. | ir.cpp:2136:6:2136:35 | void initialization_with_destructor(bool, char) | void initialization_with_destructor(bool, char) |
 ambiguousSuccessors
 unexplainedLoop
 unnecessaryPhiInstruction
@@ -20,7 +24,7 @@ multipleIRTypes
 lostReachability
 backEdgeCountMismatch
 useNotDominatedByDefinition
-| ir.cpp:1486:8:1486:8 | Unary | Operand 'Unary' is not dominated by its definition in function '$@'. | ir.cpp:1486:8:1486:8 | void StructuredBindingDataMemberStruct::StructuredBindingDataMemberStruct() | void StructuredBindingDataMemberStruct::StructuredBindingDataMemberStruct() |
+| ir.cpp:1488:8:1488:8 | Unary | Operand 'Unary' is not dominated by its definition in function '$@'. | ir.cpp:1488:8:1488:8 | void StructuredBindingDataMemberStruct::StructuredBindingDataMemberStruct() | void StructuredBindingDataMemberStruct::StructuredBindingDataMemberStruct() |
 | try_except.c:13:13:13:13 | Left | Operand 'Left' is not dominated by its definition in function '$@'. | try_except.c:6:6:6:6 | void f() | void f() |
 | try_except.c:13:13:13:13 | Left | Operand 'Left' is not dominated by its definition in function '$@'. | try_except.c:6:6:6:6 | void f() | void f() |
 | try_except.c:39:15:39:15 | Left | Operand 'Left' is not dominated by its definition in function '$@'. | try_except.c:32:6:32:6 | void h(int) | void h(int) |
@@ -37,4 +41,5 @@ nonUniqueEnclosingIRFunction
 fieldAddressOnNonPointer
 thisArgumentIsNonPointer
 nonUniqueIRVariable
+| ir.cpp:2153:68:2153:69 | VariableAddress: ys | Variable address instruction 'VariableAddress: ys' has no associated variable, in function '$@'. | ir.cpp:2136:6:2136:35 | void initialization_with_destructor(bool, char) | void initialization_with_destructor(bool, char) |
 missingCppType