r184815 - [analyzer] Handle zeroing CXXConstructExprs.
Jordan Rose
jordan_rose at apple.com
Mon Jun 24 18:56:08 PDT 2013
Author: jrose
Date: Mon Jun 24 20:56:08 2013
New Revision: 184815
URL: http://llvm.org/viewvc/llvm-project?rev=184815&view=rev
Log:
[analyzer] Handle zeroing CXXConstructExprs.
Re-apply r184511, reverted in r184561, with the trivial default constructor
fast path removed -- it turned out not to be necessary here.
Certain expressions can cause a constructor invocation to zero-initialize
its object even if the constructor itself does no initialization. The
analyzer now handles that before evaluating the call to the constructor,
using the same "default binding" mechanism that calloc() uses, rather
than simply ignoring the zero-initialization flag.
<rdar://problem/14212563>
Added:
cfe/trunk/test/Analysis/ctor.mm
- copied, changed from r184814, cfe/trunk/test/Analysis/ctor-inlining.mm
Removed:
cfe/trunk/test/Analysis/ctor-inlining.mm
Modified:
cfe/trunk/lib/StaticAnalyzer/Core/ExprEngineCXX.cpp
Modified: cfe/trunk/lib/StaticAnalyzer/Core/ExprEngineCXX.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/StaticAnalyzer/Core/ExprEngineCXX.cpp?rev=184815&r1=184814&r2=184815&view=diff
==============================================================================
--- cfe/trunk/lib/StaticAnalyzer/Core/ExprEngineCXX.cpp (original)
+++ cfe/trunk/lib/StaticAnalyzer/Core/ExprEngineCXX.cpp Mon Jun 24 20:56:08 2013
@@ -176,6 +176,7 @@ void ExprEngine::VisitCXXConstructExpr(c
}
// FIXME: This will eventually need to handle new-expressions as well.
+ // Don't forget to update the pre-constructor initialization code below.
}
// If we couldn't find an existing region to construct into, assume we're
@@ -233,8 +234,38 @@ void ExprEngine::VisitCXXConstructExpr(c
ExplodedNodeSet DstPreVisit;
getCheckerManager().runCheckersForPreStmt(DstPreVisit, Pred, CE, *this);
+
+ ExplodedNodeSet PreInitialized;
+ {
+ StmtNodeBuilder Bldr(DstPreVisit, PreInitialized, *currBldrCtx);
+ if (CE->requiresZeroInitialization()) {
+ // Type of the zero doesn't matter.
+ SVal ZeroVal = svalBuilder.makeZeroVal(getContext().CharTy);
+
+ for (ExplodedNodeSet::iterator I = DstPreVisit.begin(),
+ E = DstPreVisit.end();
+ I != E; ++I) {
+ ProgramStateRef State = (*I)->getState();
+ // FIXME: Once we properly handle constructors in new-expressions, we'll
+ // need to invalidate the region before setting a default value, to make
+ // sure there aren't any lingering bindings around. This probably needs
+ // to happen regardless of whether or not the object is zero-initialized
+ // to handle random fields of a placement-initialized object picking up
+ // old bindings. We might only want to do it when we need to, though.
+ // FIXME: This isn't actually correct for arrays -- we need to zero-
+ // initialize the entire array, not just the first element -- but our
+ // handling of arrays everywhere else is weak as well, so this shouldn't
+ // actually make things worse. Placement new makes this tricky as well,
+ // since it's then possible to be initializing one part of a multi-
+ // dimensional array.
+ State = State->bindDefault(loc::MemRegionVal(Target), ZeroVal);
+ Bldr.generateNode(CE, *I, State, /*tag=*/0, ProgramPoint::PreStmtKind);
+ }
+ }
+ }
+
ExplodedNodeSet DstPreCall;
- getCheckerManager().runCheckersForPreCall(DstPreCall, DstPreVisit,
+ getCheckerManager().runCheckersForPreCall(DstPreCall, PreInitialized,
*Call, *this);
ExplodedNodeSet DstEvaluated;
Removed: cfe/trunk/test/Analysis/ctor-inlining.mm
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/ctor-inlining.mm?rev=184814&view=auto
==============================================================================
--- cfe/trunk/test/Analysis/ctor-inlining.mm (original)
+++ cfe/trunk/test/Analysis/ctor-inlining.mm (removed)
@@ -1,536 +0,0 @@
-// RUN: %clang_cc1 -analyze -analyzer-checker=core,debug.ExprInspection -fobjc-arc -analyzer-config c++-inlining=constructors -Wno-null-dereference -std=c++11 -verify %s
-
-void clang_analyzer_eval(bool);
-void clang_analyzer_checkInlined(bool);
-
-// A simplified version of std::move.
-template <typename T>
-T &&move(T &obj) {
- return static_cast<T &&>(obj);
-}
-
-
-struct Wrapper {
- __strong id obj;
-};
-
-void test() {
- Wrapper w;
- // force a diagnostic
- *(char *)0 = 1; // expected-warning{{Dereference of null pointer}}
-}
-
-
-struct IntWrapper {
- int x;
-};
-
-void testCopyConstructor() {
- IntWrapper a;
- a.x = 42;
-
- IntWrapper b(a);
- clang_analyzer_eval(b.x == 42); // expected-warning{{TRUE}}
-}
-
-struct NonPODIntWrapper {
- int x;
-
- virtual int get();
-};
-
-void testNonPODCopyConstructor() {
- NonPODIntWrapper a;
- a.x = 42;
-
- NonPODIntWrapper b(a);
- clang_analyzer_eval(b.x == 42); // expected-warning{{TRUE}}
-}
-
-
-namespace ConstructorVirtualCalls {
- class A {
- public:
- int *out1, *out2, *out3;
-
- virtual int get() { return 1; }
-
- A(int *out1) {
- *out1 = get();
- }
- };
-
- class B : public A {
- public:
- virtual int get() { return 2; }
-
- B(int *out1, int *out2) : A(out1) {
- *out2 = get();
- }
- };
-
- class C : public B {
- public:
- virtual int get() { return 3; }
-
- C(int *out1, int *out2, int *out3) : B(out1, out2) {
- *out3 = get();
- }
- };
-
- void test() {
- int a, b, c;
-
- C obj(&a, &b, &c);
- clang_analyzer_eval(a == 1); // expected-warning{{TRUE}}
- clang_analyzer_eval(b == 2); // expected-warning{{TRUE}}
- clang_analyzer_eval(c == 3); // expected-warning{{TRUE}}
-
- clang_analyzer_eval(obj.get() == 3); // expected-warning{{TRUE}}
-
- // Sanity check for devirtualization.
- A *base = &obj;
- clang_analyzer_eval(base->get() == 3); // expected-warning{{TRUE}}
- }
-}
-
-namespace TemporaryConstructor {
- class BoolWrapper {
- public:
- BoolWrapper() {
- clang_analyzer_checkInlined(true); // expected-warning{{TRUE}}
- value = true;
- }
- bool value;
- };
-
- void test() {
- // PR13717 - Don't crash when a CXXTemporaryObjectExpr is inlined.
- if (BoolWrapper().value)
- return;
- }
-}
-
-
-namespace ConstructorUsedAsRValue {
- using TemporaryConstructor::BoolWrapper;
-
- bool extractValue(BoolWrapper b) {
- return b.value;
- }
-
- void test() {
- bool result = extractValue(BoolWrapper());
- clang_analyzer_eval(result); // expected-warning{{TRUE}}
- }
-}
-
-namespace PODUninitialized {
- class POD {
- public:
- int x, y;
- };
-
- class PODWrapper {
- public:
- POD p;
- };
-
- class NonPOD {
- public:
- int x, y;
-
- NonPOD() {}
- NonPOD(const NonPOD &Other)
- : x(Other.x), y(Other.y) // expected-warning {{undefined}}
- {
- }
- NonPOD(NonPOD &&Other)
- : x(Other.x), y(Other.y) // expected-warning {{undefined}}
- {
- }
-
- NonPOD &operator=(const NonPOD &Other)
- {
- x = Other.x;
- y = Other.y; // expected-warning {{undefined}}
- return *this;
- }
- NonPOD &operator=(NonPOD &&Other)
- {
- x = Other.x;
- y = Other.y; // expected-warning {{undefined}}
- return *this;
- }
- };
-
- class NonPODWrapper {
- public:
- class Inner {
- public:
- int x, y;
-
- Inner() {}
- Inner(const Inner &Other)
- : x(Other.x), y(Other.y) // expected-warning {{undefined}}
- {
- }
- Inner(Inner &&Other)
- : x(Other.x), y(Other.y) // expected-warning {{undefined}}
- {
- }
-
- Inner &operator=(const Inner &Other)
- {
- x = Other.x; // expected-warning {{undefined}}
- y = Other.y;
- return *this;
- }
- Inner &operator=(Inner &&Other)
- {
- x = Other.x; // expected-warning {{undefined}}
- y = Other.y;
- return *this;
- }
- };
-
- Inner p;
- };
-
- void testPOD() {
- POD p;
- p.x = 1;
- POD p2 = p; // no-warning
- clang_analyzer_eval(p2.x == 1); // expected-warning{{TRUE}}
- POD p3 = move(p); // no-warning
- clang_analyzer_eval(p3.x == 1); // expected-warning{{TRUE}}
-
- // Use rvalues as well.
- clang_analyzer_eval(POD(p3).x == 1); // expected-warning{{TRUE}}
-
- PODWrapper w;
- w.p.y = 1;
- PODWrapper w2 = w; // no-warning
- clang_analyzer_eval(w2.p.y == 1); // expected-warning{{TRUE}}
- PODWrapper w3 = move(w); // no-warning
- clang_analyzer_eval(w3.p.y == 1); // expected-warning{{TRUE}}
-
- // Use rvalues as well.
- clang_analyzer_eval(PODWrapper(w3).p.y == 1); // expected-warning{{TRUE}}
- }
-
- void testNonPOD() {
- NonPOD p;
- p.x = 1;
- NonPOD p2 = p;
- }
-
- void testNonPODMove() {
- NonPOD p;
- p.x = 1;
- NonPOD p2 = move(p);
- }
-
- void testNonPODWrapper() {
- NonPODWrapper w;
- w.p.y = 1;
- NonPODWrapper w2 = w;
- }
-
- void testNonPODWrapperMove() {
- NonPODWrapper w;
- w.p.y = 1;
- NonPODWrapper w2 = move(w);
- }
-
- // Not strictly about constructors, but trivial assignment operators should
- // essentially work the same way.
- namespace AssignmentOperator {
- void testPOD() {
- POD p;
- p.x = 1;
- POD p2;
- p2 = p; // no-warning
- clang_analyzer_eval(p2.x == 1); // expected-warning{{TRUE}}
- POD p3;
- p3 = move(p); // no-warning
- clang_analyzer_eval(p3.x == 1); // expected-warning{{TRUE}}
-
- PODWrapper w;
- w.p.y = 1;
- PODWrapper w2;
- w2 = w; // no-warning
- clang_analyzer_eval(w2.p.y == 1); // expected-warning{{TRUE}}
- PODWrapper w3;
- w3 = move(w); // no-warning
- clang_analyzer_eval(w3.p.y == 1); // expected-warning{{TRUE}}
- }
-
- void testReturnValue() {
- POD p;
- p.x = 1;
- POD p2;
- clang_analyzer_eval(&(p2 = p) == &p2); // expected-warning{{TRUE}}
-
- PODWrapper w;
- w.p.y = 1;
- PODWrapper w2;
- clang_analyzer_eval(&(w2 = w) == &w2); // expected-warning{{TRUE}}
- }
-
- void testNonPOD() {
- NonPOD p;
- p.x = 1;
- NonPOD p2;
- p2 = p;
- }
-
- void testNonPODMove() {
- NonPOD p;
- p.x = 1;
- NonPOD p2;
- p2 = move(p);
- }
-
- void testNonPODWrapper() {
- NonPODWrapper w;
- w.p.y = 1;
- NonPODWrapper w2;
- w2 = w;
- }
-
- void testNonPODWrapperMove() {
- NonPODWrapper w;
- w.p.y = 1;
- NonPODWrapper w2;
- w2 = move(w);
- }
- }
-}
-
-namespace ArrayMembers {
- struct Primitive {
- int values[3];
- };
-
- void testPrimitive() {
- Primitive a = { { 1, 2, 3 } };
-
- clang_analyzer_eval(a.values[0] == 1); // expected-warning{{TRUE}}
- clang_analyzer_eval(a.values[1] == 2); // expected-warning{{TRUE}}
- clang_analyzer_eval(a.values[2] == 3); // expected-warning{{TRUE}}
-
- Primitive b = a;
-
- clang_analyzer_eval(b.values[0] == 1); // expected-warning{{TRUE}}
- clang_analyzer_eval(b.values[1] == 2); // expected-warning{{TRUE}}
- clang_analyzer_eval(b.values[2] == 3); // expected-warning{{TRUE}}
-
- Primitive c;
- c = b;
-
- clang_analyzer_eval(c.values[0] == 1); // expected-warning{{TRUE}}
- clang_analyzer_eval(c.values[1] == 2); // expected-warning{{TRUE}}
- clang_analyzer_eval(c.values[2] == 3); // expected-warning{{TRUE}}
- }
-
- struct NestedPrimitive {
- int values[2][3];
- };
-
- void testNestedPrimitive() {
- NestedPrimitive a = { { { 0, 0, 0 }, { 1, 2, 3 } } };
-
- clang_analyzer_eval(a.values[1][0] == 1); // expected-warning{{TRUE}}
- clang_analyzer_eval(a.values[1][1] == 2); // expected-warning{{TRUE}}
- clang_analyzer_eval(a.values[1][2] == 3); // expected-warning{{TRUE}}
-
- NestedPrimitive b = a;
-
- clang_analyzer_eval(b.values[1][0] == 1); // expected-warning{{TRUE}}
- clang_analyzer_eval(b.values[1][1] == 2); // expected-warning{{TRUE}}
- clang_analyzer_eval(b.values[1][2] == 3); // expected-warning{{TRUE}}
-
- NestedPrimitive c;
- c = b;
-
- clang_analyzer_eval(c.values[1][0] == 1); // expected-warning{{TRUE}}
- clang_analyzer_eval(c.values[1][1] == 2); // expected-warning{{TRUE}}
- clang_analyzer_eval(c.values[1][2] == 3); // expected-warning{{TRUE}}
- }
-
- struct POD {
- IntWrapper values[3];
- };
-
- void testPOD() {
- POD a = { { { 1 }, { 2 }, { 3 } } };
-
- clang_analyzer_eval(a.values[0].x == 1); // expected-warning{{TRUE}}
- clang_analyzer_eval(a.values[1].x == 2); // expected-warning{{TRUE}}
- clang_analyzer_eval(a.values[2].x == 3); // expected-warning{{TRUE}}
-
- POD b = a;
-
- clang_analyzer_eval(b.values[0].x == 1); // expected-warning{{TRUE}}
- clang_analyzer_eval(b.values[1].x == 2); // expected-warning{{TRUE}}
- clang_analyzer_eval(b.values[2].x == 3); // expected-warning{{TRUE}}
-
- POD c;
- c = b;
-
- clang_analyzer_eval(c.values[0].x == 1); // expected-warning{{TRUE}}
- clang_analyzer_eval(c.values[1].x == 2); // expected-warning{{TRUE}}
- clang_analyzer_eval(c.values[2].x == 3); // expected-warning{{TRUE}}
- }
-
- struct NestedPOD {
- IntWrapper values[2][3];
- };
-
- void testNestedPOD() {
- NestedPOD a = { { { { 0 }, { 0 }, { 0 } }, { { 1 }, { 2 }, { 3 } } } };
-
- clang_analyzer_eval(a.values[1][0].x == 1); // expected-warning{{TRUE}}
- clang_analyzer_eval(a.values[1][1].x == 2); // expected-warning{{TRUE}}
- clang_analyzer_eval(a.values[1][2].x == 3); // expected-warning{{TRUE}}
-
- NestedPOD b = a;
-
- clang_analyzer_eval(b.values[1][0].x == 1); // expected-warning{{TRUE}}
- clang_analyzer_eval(b.values[1][1].x == 2); // expected-warning{{TRUE}}
- clang_analyzer_eval(b.values[1][2].x == 3); // expected-warning{{TRUE}}
-
- NestedPOD c;
- c = b;
-
- clang_analyzer_eval(c.values[1][0].x == 1); // expected-warning{{TRUE}}
- clang_analyzer_eval(c.values[1][1].x == 2); // expected-warning{{TRUE}}
- clang_analyzer_eval(c.values[1][2].x == 3); // expected-warning{{TRUE}}
- }
-
- struct NonPOD {
- NonPODIntWrapper values[3];
- };
-
- void testNonPOD() {
- NonPOD a;
- a.values[0].x = 1;
- a.values[1].x = 2;
- a.values[2].x = 3;
-
- clang_analyzer_eval(a.values[0].x == 1); // expected-warning{{TRUE}}
- clang_analyzer_eval(a.values[1].x == 2); // expected-warning{{TRUE}}
- clang_analyzer_eval(a.values[2].x == 3); // expected-warning{{TRUE}}
-
- NonPOD b = a;
-
- clang_analyzer_eval(b.values[0].x == 1); // expected-warning{{UNKNOWN}}
- clang_analyzer_eval(b.values[1].x == 2); // expected-warning{{UNKNOWN}}
- clang_analyzer_eval(b.values[2].x == 3); // expected-warning{{UNKNOWN}}
-
- NonPOD c;
- c = b;
-
- clang_analyzer_eval(c.values[0].x == 1); // expected-warning{{UNKNOWN}}
- clang_analyzer_eval(c.values[1].x == 2); // expected-warning{{UNKNOWN}}
- clang_analyzer_eval(c.values[2].x == 3); // expected-warning{{UNKNOWN}}
- }
-
- struct NestedNonPOD {
- NonPODIntWrapper values[2][3];
- };
-
- void testNestedNonPOD() {
- NestedNonPOD a;
- a.values[0][0].x = 0;
- a.values[0][1].x = 0;
- a.values[0][2].x = 0;
- a.values[1][0].x = 1;
- a.values[1][1].x = 2;
- a.values[1][2].x = 3;
-
- clang_analyzer_eval(a.values[1][0].x == 1); // expected-warning{{TRUE}}
- clang_analyzer_eval(a.values[1][1].x == 2); // expected-warning{{TRUE}}
- clang_analyzer_eval(a.values[1][2].x == 3); // expected-warning{{TRUE}}
-
- NestedNonPOD b = a;
-
- clang_analyzer_eval(b.values[1][0].x == 1); // expected-warning{{UNKNOWN}}
- clang_analyzer_eval(b.values[1][1].x == 2); // expected-warning{{UNKNOWN}}
- clang_analyzer_eval(b.values[1][2].x == 3); // expected-warning{{UNKNOWN}}
-
- NestedNonPOD c;
- c = b;
-
- clang_analyzer_eval(c.values[1][0].x == 1); // expected-warning{{UNKNOWN}}
- clang_analyzer_eval(c.values[1][1].x == 2); // expected-warning{{UNKNOWN}}
- clang_analyzer_eval(c.values[1][2].x == 3); // expected-warning{{UNKNOWN}}
- }
-
- struct NonPODDefaulted {
- NonPODIntWrapper values[3];
-
- NonPODDefaulted() = default;
- NonPODDefaulted(const NonPODDefaulted &) = default;
- NonPODDefaulted &operator=(const NonPODDefaulted &) = default;
- };
-
- void testNonPODDefaulted() {
- NonPODDefaulted a;
- a.values[0].x = 1;
- a.values[1].x = 2;
- a.values[2].x = 3;
-
- clang_analyzer_eval(a.values[0].x == 1); // expected-warning{{TRUE}}
- clang_analyzer_eval(a.values[1].x == 2); // expected-warning{{TRUE}}
- clang_analyzer_eval(a.values[2].x == 3); // expected-warning{{TRUE}}
-
- NonPODDefaulted b = a;
-
- clang_analyzer_eval(b.values[0].x == 1); // expected-warning{{UNKNOWN}}
- clang_analyzer_eval(b.values[1].x == 2); // expected-warning{{UNKNOWN}}
- clang_analyzer_eval(b.values[2].x == 3); // expected-warning{{UNKNOWN}}
-
- NonPODDefaulted c;
- c = b;
-
- clang_analyzer_eval(c.values[0].x == 1); // expected-warning{{UNKNOWN}}
- clang_analyzer_eval(c.values[1].x == 2); // expected-warning{{UNKNOWN}}
- clang_analyzer_eval(c.values[2].x == 3); // expected-warning{{UNKNOWN}}
- }
-};
-
-namespace VirtualInheritance {
- int counter;
-
- struct base {
- base() {
- ++counter;
- }
- };
-
- struct virtual_subclass : public virtual base {
- virtual_subclass() {}
- };
-
- struct double_subclass : public virtual_subclass {
- double_subclass() {}
- };
-
- void test() {
- counter = 0;
- double_subclass obj;
- clang_analyzer_eval(counter == 1); // expected-warning{{TRUE}}
- }
-
- struct double_virtual_subclass : public virtual virtual_subclass {
- double_virtual_subclass() {}
- };
-
- void testVirtual() {
- counter = 0;
- double_virtual_subclass obj;
- clang_analyzer_eval(counter == 1); // expected-warning{{TRUE}}
- }
-}
Copied: cfe/trunk/test/Analysis/ctor.mm (from r184814, cfe/trunk/test/Analysis/ctor-inlining.mm)
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/ctor.mm?p2=cfe/trunk/test/Analysis/ctor.mm&p1=cfe/trunk/test/Analysis/ctor-inlining.mm&r1=184814&r2=184815&rev=184815&view=diff
==============================================================================
--- cfe/trunk/test/Analysis/ctor-inlining.mm (original)
+++ cfe/trunk/test/Analysis/ctor.mm Mon Jun 24 20:56:08 2013
@@ -534,3 +534,94 @@ namespace VirtualInheritance {
clang_analyzer_eval(counter == 1); // expected-warning{{TRUE}}
}
}
+
+namespace ZeroInitialization {
+ struct raw_pair {
+ int p1;
+ int p2;
+ };
+
+ void testVarDecl() {
+ raw_pair p{};
+ clang_analyzer_eval(p.p1 == 0); // expected-warning{{TRUE}}
+ clang_analyzer_eval(p.p2 == 0); // expected-warning{{TRUE}}
+ }
+
+ void testTemporary() {
+ clang_analyzer_eval(raw_pair().p1 == 0); // expected-warning{{TRUE}}
+ clang_analyzer_eval(raw_pair().p2 == 0); // expected-warning{{TRUE}}
+ }
+
+ void testArray() {
+ raw_pair p[2] = {};
+ clang_analyzer_eval(p[0].p1 == 0); // expected-warning{{TRUE}}
+ clang_analyzer_eval(p[0].p2 == 0); // expected-warning{{TRUE}}
+ clang_analyzer_eval(p[1].p1 == 0); // expected-warning{{TRUE}}
+ clang_analyzer_eval(p[1].p2 == 0); // expected-warning{{TRUE}}
+ }
+
+ void testNew() {
+ // FIXME: Pending proper implementation of constructors for 'new'.
+ raw_pair *pp = new raw_pair();
+ clang_analyzer_eval(pp->p1 == 0); // expected-warning{{UNKNOWN}}
+ clang_analyzer_eval(pp->p2 == 0); // expected-warning{{UNKNOWN}}
+ }
+
+ void testArrayNew() {
+ // FIXME: Pending proper implementation of constructors for 'new[]'.
+ raw_pair *p = new raw_pair[2]();
+ clang_analyzer_eval(p[0].p1 == 0); // expected-warning{{UNKNOWN}}
+ clang_analyzer_eval(p[0].p2 == 0); // expected-warning{{UNKNOWN}}
+ clang_analyzer_eval(p[1].p1 == 0); // expected-warning{{UNKNOWN}}
+ clang_analyzer_eval(p[1].p2 == 0); // expected-warning{{UNKNOWN}}
+ }
+
+ struct initializing_pair {
+ public:
+ int x;
+ raw_pair y;
+ initializing_pair() : x(), y() {}
+ };
+
+ void testFieldInitializers() {
+ initializing_pair p;
+ clang_analyzer_eval(p.x == 0); // expected-warning{{TRUE}}
+ clang_analyzer_eval(p.y.p1 == 0); // expected-warning{{TRUE}}
+ clang_analyzer_eval(p.y.p2 == 0); // expected-warning{{TRUE}}
+ }
+
+ struct subclass : public raw_pair {
+ subclass() = default;
+ };
+
+ void testSubclass() {
+ subclass p;
+ clang_analyzer_eval(p.p1 == 0); // expected-warning{{garbage}}
+ }
+
+ struct initializing_subclass : public raw_pair {
+ initializing_subclass() : raw_pair() {}
+ };
+
+ void testInitializingSubclass() {
+ initializing_subclass p;
+ clang_analyzer_eval(p.p1 == 0); // expected-warning{{TRUE}}
+ clang_analyzer_eval(p.p2 == 0); // expected-warning{{TRUE}}
+ }
+
+ struct pair_wrapper {
+ pair_wrapper() : p() {}
+ raw_pair p;
+ };
+
+ struct virtual_subclass : public virtual pair_wrapper {
+ virtual_subclass() {}
+ };
+
+ struct double_virtual_subclass : public virtual_subclass {
+ double_virtual_subclass() {
+ // This previously caused a crash because the pair_wrapper subobject was
+ // initialized twice.
+ }
+ };
+}
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