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llvm-project/clang/test/CodeGenCXX/exceptions.cpp

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// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin10 -emit-llvm -o - -fcxx-exceptions -fexceptions | FileCheck %s
typedef typeof(sizeof(0)) size_t;
// This just shouldn't crash.
namespace test0 {
struct allocator {
allocator();
allocator(const allocator&);
~allocator();
};
void f();
void g(bool b, bool c) {
if (b) {
if (!c)
throw allocator();
return;
}
f();
}
}
namespace test1 {
struct A { A(int); A(int, int); ~A(); void *p; };
A *a() {
// CHECK: define [[A:%.*]]* @_ZN5test11aEv()
// CHECK: [[NEW:%.*]] = call noalias i8* @_Znwm(i64 8)
// CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
// CHECK-NEXT: invoke void @_ZN5test11AC1Ei([[A]]* [[CAST]], i32 5)
// CHECK: ret [[A]]* [[CAST]]
// CHECK: call void @_ZdlPv(i8* [[NEW]])
return new A(5);
}
A *b() {
// CHECK: define [[A:%.*]]* @_ZN5test11bEv()
// CHECK: [[NEW:%.*]] = call noalias i8* @_Znwm(i64 8)
// CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
// CHECK-NEXT: [[FOO:%.*]] = invoke i32 @_ZN5test13fooEv()
// CHECK: invoke void @_ZN5test11AC1Ei([[A]]* [[CAST]], i32 [[FOO]])
// CHECK: ret [[A]]* [[CAST]]
// CHECK: call void @_ZdlPv(i8* [[NEW]])
extern int foo();
return new A(foo());
}
struct B { B(); ~B(); operator int(); int x; };
B makeB();
A *c() {
// CHECK: define [[A:%.*]]* @_ZN5test11cEv()
// CHECK: [[ACTIVE:%.*]] = alloca i1
// CHECK-NEXT: [[NEW:%.*]] = call noalias i8* @_Znwm(i64 8)
// CHECK-NEXT: store i1 true, i1* [[ACTIVE]]
// CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
// CHECK-NEXT: invoke void @_ZN5test11BC1Ev([[B:%.*]]* [[T0:%.*]])
// CHECK: [[T1:%.*]] = getelementptr inbounds [[B]]* [[T0]], i32 0, i32 0
// CHECK-NEXT: [[T2:%.*]] = load i32* [[T1]], align 4
// CHECK-NEXT: invoke void @_ZN5test11AC1Ei([[A]]* [[CAST]], i32 [[T2]])
// CHECK: store i1 false, i1* [[ACTIVE]]
// CHECK-NEXT: invoke void @_ZN5test11BD1Ev([[B]]* [[T0]])
// CHECK: ret [[A]]* [[CAST]]
// CHECK: [[ISACTIVE:%.*]] = load i1* [[ACTIVE]]
// CHECK-NEXT: br i1 [[ISACTIVE]]
// CHECK: call void @_ZdlPv(i8* [[NEW]])
return new A(B().x);
}
A *d() {
// CHECK: define [[A:%.*]]* @_ZN5test11dEv()
// CHECK: [[ACTIVE:%.*]] = alloca i1
// CHECK-NEXT: [[NEW:%.*]] = call noalias i8* @_Znwm(i64 8)
// CHECK-NEXT: store i1 true, i1* [[ACTIVE]]
// CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
// CHECK-NEXT: invoke void @_ZN5test11BC1Ev([[B:%.*]]* [[T0:%.*]])
// CHECK: [[T1:%.*]] = invoke i32 @_ZN5test11BcviEv([[B]]* [[T0]])
// CHECK: invoke void @_ZN5test11AC1Ei([[A]]* [[CAST]], i32 [[T1]])
// CHECK: store i1 false, i1* [[ACTIVE]]
// CHECK-NEXT: invoke void @_ZN5test11BD1Ev([[B]]* [[T0]])
// CHECK: ret [[A]]* [[CAST]]
// CHECK: [[ISACTIVE:%.*]] = load i1* [[ACTIVE]]
// CHECK-NEXT: br i1 [[ISACTIVE]]
// CHECK: call void @_ZdlPv(i8* [[NEW]])
return new A(B());
}
A *e() {
// CHECK: define [[A:%.*]]* @_ZN5test11eEv()
// CHECK: [[ACTIVE:%.*]] = alloca i1
// CHECK-NEXT: [[NEW:%.*]] = call noalias i8* @_Znwm(i64 8)
// CHECK-NEXT: store i1 true, i1* [[ACTIVE]]
// CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
// CHECK-NEXT: invoke void @_ZN5test11BC1Ev([[B:%.*]]* [[T0:%.*]])
// CHECK: [[T1:%.*]] = invoke i32 @_ZN5test11BcviEv([[B]]* [[T0]])
// CHECK: invoke void @_ZN5test11BC1Ev([[B]]* [[T2:%.*]])
// CHECK: [[T3:%.*]] = invoke i32 @_ZN5test11BcviEv([[B]]* [[T2]])
// CHECK: invoke void @_ZN5test11AC1Eii([[A]]* [[CAST]], i32 [[T1]], i32 [[T3]])
// CHECK: store i1 false, i1* [[ACTIVE]]
// CHECK-NEXT: invoke void @_ZN5test11BD1Ev([[B]]* [[T2]])
// CHECK: invoke void @_ZN5test11BD1Ev([[B]]* [[T0]])
// CHECK: ret [[A]]* [[CAST]]
// CHECK: [[ISACTIVE:%.*]] = load i1* [[ACTIVE]]
// CHECK-NEXT: br i1 [[ISACTIVE]]
// CHECK: call void @_ZdlPv(i8* [[NEW]])
return new A(B(), B());
}
A *f() {
return new A(makeB().x);
}
A *g() {
return new A(makeB());
}
A *h() {
return new A(makeB(), makeB());
}
A *i() {
// CHECK: define [[A:%.*]]* @_ZN5test11iEv()
// CHECK: [[X:%.*]] = alloca [[A]]*, align 8
// CHECK: [[ACTIVE:%.*]] = alloca i1
// CHECK: [[NEW:%.*]] = call noalias i8* @_Znwm(i64 8)
// CHECK-NEXT: store i1 true, i1* [[ACTIVE]]
// CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
// CHECK-NEXT: invoke void @_ZN5test15makeBEv([[B:%.*]]* sret [[T0:%.*]])
// CHECK: [[T1:%.*]] = invoke i32 @_ZN5test11BcviEv([[B]]* [[T0]])
// CHECK: invoke void @_ZN5test11AC1Ei([[A]]* [[CAST]], i32 [[T1]])
// CHECK: store i1 false, i1* [[ACTIVE]]
// CHECK-NEXT: store [[A]]* [[CAST]], [[A]]** [[X]], align 8
// CHECK: invoke void @_ZN5test15makeBEv([[B:%.*]]* sret [[T2:%.*]])
// CHECK: [[RET:%.*]] = load [[A]]** [[X]], align 8
// CHECK: invoke void @_ZN5test11BD1Ev([[B]]* [[T2]])
// CHECK: invoke void @_ZN5test11BD1Ev([[B]]* [[T0]])
// CHECK: ret [[A]]* [[RET]]
// CHECK: [[ISACTIVE:%.*]] = load i1* [[ACTIVE]]
// CHECK-NEXT: br i1 [[ISACTIVE]]
// CHECK: call void @_ZdlPv(i8* [[NEW]])
A *x;
return (x = new A(makeB()), makeB(), x);
}
}
namespace test2 {
struct A {
A(int); A(int, int); ~A();
void *p;
void *operator new(size_t);
void operator delete(void*, size_t);
};
A *a() {
// CHECK: define [[A:%.*]]* @_ZN5test21aEv()
// CHECK: [[NEW:%.*]] = call i8* @_ZN5test21AnwEm(i64 8)
// CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
// CHECK-NEXT: invoke void @_ZN5test21AC1Ei([[A]]* [[CAST]], i32 5)
// CHECK: ret [[A]]* [[CAST]]
// CHECK: invoke void @_ZN5test21AdlEPvm(i8* [[NEW]], i64 8)
// CHECK: call void @_ZSt9terminatev()
return new A(5);
}
}
namespace test3 {
struct A {
A(int); A(int, int); A(const A&); ~A();
void *p;
void *operator new(size_t, void*, double);
void operator delete(void*, void*, double);
};
void *foo();
double bar();
A makeA(), *makeAPtr();
A *a() {
// CHECK: define [[A:%.*]]* @_ZN5test31aEv()
// CHECK: [[FOO:%.*]] = call i8* @_ZN5test33fooEv()
// CHECK: [[BAR:%.*]] = call double @_ZN5test33barEv()
// CHECK: [[NEW:%.*]] = call i8* @_ZN5test31AnwEmPvd(i64 8, i8* [[FOO]], double [[BAR]])
// CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
// CHECK-NEXT: invoke void @_ZN5test31AC1Ei([[A]]* [[CAST]], i32 5)
// CHECK: ret [[A]]* [[CAST]]
// CHECK: invoke void @_ZN5test31AdlEPvS1_d(i8* [[NEW]], i8* [[FOO]], double [[BAR]])
// CHECK: call void @_ZSt9terminatev()
return new(foo(),bar()) A(5);
}
// rdar://problem/8439196
A *b(bool cond) {
// CHECK: define [[A:%.*]]* @_ZN5test31bEb(i1 zeroext
// CHECK: [[SAVED0:%.*]] = alloca i8*
// CHECK-NEXT: [[SAVED1:%.*]] = alloca i8*
// CHECK-NEXT: [[CLEANUPACTIVE:%.*]] = alloca i1
// CHECK: [[COND:%.*]] = trunc i8 {{.*}} to i1
// CHECK-NEXT: store i1 false, i1* [[CLEANUPACTIVE]]
// CHECK-NEXT: br i1 [[COND]]
return (cond ?
// CHECK: [[FOO:%.*]] = call i8* @_ZN5test33fooEv()
// CHECK-NEXT: [[NEW:%.*]] = call i8* @_ZN5test31AnwEmPvd(i64 8, i8* [[FOO]], double [[CONST:.*]])
// CHECK-NEXT: store i8* [[NEW]], i8** [[SAVED0]]
// CHECK-NEXT: store i8* [[FOO]], i8** [[SAVED1]]
// CHECK-NEXT: store i1 true, i1* [[CLEANUPACTIVE]]
// CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
// CHECK-NEXT: invoke void @_ZN5test35makeAEv([[A]]* sret [[CAST]])
// CHECK: br label
// -> cond.end
new(foo(),10.0) A(makeA()) :
// CHECK: [[MAKE:%.*]] = call [[A]]* @_ZN5test38makeAPtrEv()
// CHECK: br label
// -> cond.end
makeAPtr());
// cond.end:
// CHECK: [[RESULT:%.*]] = phi [[A]]* {{.*}}[[CAST]]{{.*}}[[MAKE]]
// CHECK: ret [[A]]* [[RESULT]]
// in the EH path:
// CHECK: [[ISACTIVE:%.*]] = load i1* [[CLEANUPACTIVE]]
// CHECK-NEXT: br i1 [[ISACTIVE]]
// CHECK: [[V0:%.*]] = load i8** [[SAVED0]]
// CHECK-NEXT: [[V1:%.*]] = load i8** [[SAVED1]]
// CHECK-NEXT: invoke void @_ZN5test31AdlEPvS1_d(i8* [[V0]], i8* [[V1]], double [[CONST]])
}
}
namespace test4 {
struct A {
A(int); A(int, int); ~A();
void *p;
void *operator new(size_t, void*, void*);
void operator delete(void*, size_t, void*, void*); // not a match
};
A *a() {
// CHECK: define [[A:%.*]]* @_ZN5test41aEv()
// CHECK: [[FOO:%.*]] = call i8* @_ZN5test43fooEv()
// CHECK-NEXT: [[BAR:%.*]] = call i8* @_ZN5test43barEv()
// CHECK-NEXT: [[NEW:%.*]] = call i8* @_ZN5test41AnwEmPvS1_(i64 8, i8* [[FOO]], i8* [[BAR]])
// CHECK-NEXT: [[CAST:%.*]] = bitcast i8* [[NEW]] to [[A]]*
// CHECK-NEXT: call void @_ZN5test41AC1Ei([[A]]* [[CAST]], i32 5)
// CHECK-NEXT: ret [[A]]* [[CAST]]
extern void *foo(), *bar();
return new(foo(),bar()) A(5);
}
}
// PR7908
namespace test5 {
struct T { T(); ~T(); };
struct A {
A(const A &x, const T &t = T());
~A();
};
void foo();
// CHECK: define void @_ZN5test54testEv()
// CHECK: [[EXNSLOT:%.*]] = alloca i8*
// CHECK-NEXT: [[SELECTORSLOT:%.*]] = alloca i32
// CHECK-NEXT: [[A:%.*]] = alloca [[A_T:%.*]], align 1
// CHECK-NEXT: [[T:%.*]] = alloca [[T_T:%.*]], align 1
// CHECK-NEXT: invoke void @_ZN5test53fooEv()
// CHECK: [[EXN:%.*]] = load i8** [[EXNSLOT]]
// CHECK-NEXT: [[ADJ:%.*]] = call i8* @__cxa_get_exception_ptr(i8* [[EXN]])
// CHECK-NEXT: [[SRC:%.*]] = bitcast i8* [[ADJ]] to [[A_T]]*
// CHECK-NEXT: invoke void @_ZN5test51TC1Ev([[T_T]]* [[T]])
// CHECK: invoke void @_ZN5test51AC1ERKS0_RKNS_1TE([[A_T]]* [[A]], [[A_T]]* [[SRC]], [[T_T]]* [[T]])
// CHECK: invoke void @_ZN5test51TD1Ev([[T_T]]* [[T]])
// CHECK: call i8* @__cxa_begin_catch(i8* [[EXN]]) nounwind
// CHECK-NEXT: invoke void @_ZN5test51AD1Ev([[A_T]]* [[A]])
// CHECK: call void @__cxa_end_catch()
void test() {
try {
foo();
} catch (A a) {
}
}
}
// PR9303: invalid assert on this
namespace test6 {
bool cond();
void test() {
try {
lbl:
if (cond()) goto lbl;
} catch (...) {
}
}
}
// PR9298
namespace test7 {
struct A { A(); ~A(); };
struct B {
// The throw() operator means that a bad allocation is signalled
// with a null return, which means that the initializer is
// evaluated conditionally.
static void *operator new(size_t size) throw();
B(const A&, B*);
~B();
};
B *test() {
// CHECK: define [[B:%.*]]* @_ZN5test74testEv()
// CHECK: [[OUTER_NEW:%.*]] = alloca i1
// CHECK-NEXT: alloca [[A:%.*]],
// CHECK-NEXT: alloca i8*
// CHECK-NEXT: alloca i32
// CHECK-NEXT: [[OUTER_A:%.*]] = alloca i1
// CHECK-NEXT: alloca i8*
// CHECK-NEXT: [[INNER_NEW:%.*]] = alloca i1
// CHECK-NEXT: alloca [[A]]
// CHECK-NEXT: [[INNER_A:%.*]] = alloca i1
// Allocate the outer object.
// CHECK-NEXT: [[NEW:%.*]] = call i8* @_ZN5test71BnwEm(
// CHECK-NEXT: icmp eq i8* [[NEW]], null
// These stores, emitted before the outermost conditional branch,
// deactivate the temporary cleanups.
// CHECK-NEXT: store i1 false, i1* [[OUTER_NEW]]
// CHECK-NEXT: store i1 false, i1* [[OUTER_A]]
// CHECK-NEXT: store i1 false, i1* [[INNER_NEW]]
// CHECK-NEXT: store i1 false, i1* [[INNER_A]]
// CHECK-NEXT: br i1
// We passed the first null check; activate that cleanup and continue.
// CHECK: store i1 true, i1* [[OUTER_NEW]]
// CHECK-NEXT: bitcast
// Create the first A temporary and activate that cleanup.
// CHECK-NEXT: invoke void @_ZN5test71AC1Ev(
// CHECK: store i1 true, i1* [[OUTER_A]]
// Allocate the inner object.
// CHECK-NEXT: [[NEW:%.*]] = call i8* @_ZN5test71BnwEm(
// CHECK-NEXT: icmp eq i8* [[NEW]], null
// CHECK-NEXT: br i1
// We passed the second null check; save that pointer, activate
// that cleanup, and continue.
// CHECK: store i8* [[NEW]]
// CHECK-NEXT: store i1 true, i1* [[INNER_NEW]]
// CHECK-NEXT: bitcast
// Build the second A temporary and activate that cleanup.
// CHECK-NEXT: invoke void @_ZN5test71AC1Ev(
// CHECK: store i1 true, i1* [[INNER_A]]
// Build the inner B object and deactivate the inner delete cleanup.
// CHECK-NEXT: invoke void @_ZN5test71BC1ERKNS_1AEPS0_(
// CHECK: store i1 false, i1* [[INNER_NEW]]
// CHECK: phi
// Build the outer B object and deactivate the outer delete cleanup.
// CHECK-NEXT: invoke void @_ZN5test71BC1ERKNS_1AEPS0_(
// CHECK: store i1 false, i1* [[OUTER_NEW]]
// CHECK: phi
// CHECK-NEXT: store [[B]]*
// Destroy the inner A object.
// CHECK-NEXT: load i1* [[INNER_A]]
// CHECK-NEXT: br i1
// CHECK: invoke void @_ZN5test71AD1Ev(
// Destroy the outer A object.
// CHECK: load i1* [[OUTER_A]]
// CHECK-NEXT: br i1
// CHECK: invoke void @_ZN5test71AD1Ev(
return new B(A(), new B(A(), 0));
}
}
// Just don't crash.
namespace test8 {
struct A {
// Having both of these is required to trigger the assert we're
// trying to avoid.
A(const A&);
A&operator=(const A&);
~A();
};
A makeA();
void test() {
throw makeA();
}
// CHECK: define void @_ZN5test84testEv
}
// Make sure we generate the correct code for the delete[] call which
// happens if A::A() throws. (We were previously calling delete[] on
// a pointer to the first array element, not the pointer returned by new[].)
// PR10870
namespace test9 {
struct A {
A();
~A();
};
A* test() {
return new A[10];
}
// CHECK: define {{%.*}}* @_ZN5test94testEv
// CHECK: [[TEST9_NEW:%.*]] = call noalias i8* @_Znam
// CHECK: call void @_ZdaPv(i8* [[TEST9_NEW]])
}
// In a destructor with a function-try-block, a return statement in a
// catch handler behaves differently from running off the end of the
// catch handler. PR13102.
namespace test10 {
extern void cleanup();
extern bool suppress;
struct A { ~A(); };
A::~A() try { cleanup(); } catch (...) { return; }
// CHECK: define void @_ZN6test101AD1Ev(
// CHECK: invoke void @_ZN6test107cleanupEv()
// CHECK-NOT: rethrow
// CHECK: ret void
struct B { ~B(); };
B::~B() try { cleanup(); } catch (...) {}
// CHECK: define void @_ZN6test101BD1Ev(
// CHECK: invoke void @_ZN6test107cleanupEv()
// CHECK: call i8* @__cxa_begin_catch
// CHECK-NEXT: invoke void @__cxa_rethrow()
// CHECK: unreachable
struct C { ~C(); };
C::~C() try { cleanup(); } catch (...) { if (suppress) return; }
// CHECK: define void @_ZN6test101CD1Ev(
// CHECK: invoke void @_ZN6test107cleanupEv()
// CHECK: call i8* @__cxa_begin_catch
// CHECK-NEXT: load i8* @_ZN6test108suppressE, align 1
// CHECK-NEXT: trunc
// CHECK-NEXT: br i1
// CHECK: call void @__cxa_end_catch()
// CHECK-NEXT: br label
// CHECK: invoke void @__cxa_rethrow()
// CHECK: unreachable
}
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