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// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s -fsanitize=unreachable | FileCheck %s
extern void __attribute__((noreturn)) abort();
// CHECK-LABEL: define void @_Z14calls_noreturnv()
void calls_noreturn() {
// CHECK: call void @_Z5abortv() [[CALL_SITE_ATTR:#[0-9]+]]
abort();
// CHECK: __ubsan_handle_builtin_unreachable
// CHECK: unreachable
}
struct A {
// CHECK: declare void @_Z5abortv() [[EXTERN_FN_ATTR:#[0-9]+]]
// CHECK-LABEL: define linkonce_odr void @_ZN1A5call1Ev
void call1() {
// CHECK: call void @_ZN1A16does_not_return2Ev({{.*}}) [[CALL_SITE_ATTR]]
does_not_return2();
// CHECK: __ubsan_handle_builtin_unreachable
// CHECK: unreachable
}
// Test static members. Checks are below after `struct A` scope ends.
static void __attribute__((noreturn)) does_not_return1() {
abort();
}
// CHECK-LABEL: define linkonce_odr void @_ZN1A5call2Ev
void call2() {
// CHECK: call void @_ZN1A16does_not_return1Ev() [[CALL_SITE_ATTR]]
does_not_return1();
// CHECK: __ubsan_handle_builtin_unreachable
// CHECK: unreachable
}
// Test calls through pointers to non-static member functions.
typedef void __attribute__((noreturn)) (A::*MemFn)();
// CHECK-LABEL: define linkonce_odr void @_ZN1A5call3Ev
void call3() {
MemFn MF = &A::does_not_return2;
// CHECK: call void %{{[0-9]+\(.*}}) [[CALL_SITE_ATTR]]
(this->*MF)();
// CHECK: __ubsan_handle_builtin_unreachable
// CHECK: unreachable
}
// Test regular members.
// CHECK-LABEL: define linkonce_odr void @_ZN1A16does_not_return2Ev({{.*}})
// CHECK-SAME: [[USER_FN_ATTR:#[0-9]+]]
void __attribute__((noreturn)) does_not_return2() {
// CHECK: call void @_Z5abortv() [[CALL_SITE_ATTR]]
abort();
// CHECK: call void @__ubsan_handle_builtin_unreachable
// CHECK: unreachable
// CHECK: call void @__ubsan_handle_builtin_unreachable
// CHECK: unreachable
}
};
// CHECK-LABEL: define linkonce_odr void @_ZN1A16does_not_return1Ev()
// CHECK-SAME: [[USER_FN_ATTR]]
// CHECK: call void @_Z5abortv() [[CALL_SITE_ATTR]]
void force_irgen() {
A a;
a.call1();
a.call2();
a.call3();
}
// 1) 'noreturn' should be removed from functions and call sites
// 2) 'expect_noreturn' added to call sites
// CHECK-LABEL: attributes
// CHECK: [[USER_FN_ATTR]] = { {{.*[^noreturn].*}} }
// CHECK: [[EXTERN_FN_ATTR]] = { {{.*[^noreturn].*}} }
// CHECK: [[CALL_SITE_ATTR]] = { expect_noreturn }
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