1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s -fsanitize=unreachable | FileCheck %s
2
3 void abort() __attribute__((noreturn));
4
5 // CHECK-LABEL: define void @_Z14calls_noreturnv()
calls_noreturn()6 void calls_noreturn() {
7 // Check absence ([^#]*) of call site attributes (including noreturn)
8 // CHECK: call void @_Z5abortv(){{[^#]*}}
9 abort();
10
11 // CHECK: __ubsan_handle_builtin_unreachable
12 // CHECK: unreachable
13 }
14
15 struct A {
16 // CHECK: declare void @_Z5abortv() [[EXTERN_FN_ATTR:#[0-9]+]]
17
18 // CHECK-LABEL: define linkonce_odr void @_ZN1A5call1Ev
call1A19 void call1() {
20 // CHECK: call void @_ZN1A16does_not_return2Ev({{.*}}){{[^#]*}}
21 does_not_return2();
22
23 // CHECK: __ubsan_handle_builtin_unreachable
24 // CHECK: unreachable
25 }
26
27 // Test static members. Checks are below after `struct A` scope ends.
does_not_return1A28 static void does_not_return1() __attribute__((noreturn)) {
29 abort();
30 }
31
32 // CHECK-LABEL: define linkonce_odr void @_ZN1A5call2Ev
call2A33 void call2() {
34 // CHECK: call void @_ZN1A16does_not_return1Ev(){{[^#]*}}
35 does_not_return1();
36
37 // CHECK: __ubsan_handle_builtin_unreachable
38 // CHECK: unreachable
39 }
40
41 // Test calls through pointers to non-static member functions.
42 typedef void (A::*MemFn)() __attribute__((noreturn));
43
44 // CHECK-LABEL: define linkonce_odr void @_ZN1A5call3Ev
call3A45 void call3() {
46 MemFn MF = &A::does_not_return2;
47 // CHECK: call void %{{[0-9]+\(.*}}){{[^#]*}}
48 (this->*MF)();
49
50 // CHECK: __ubsan_handle_builtin_unreachable
51 // CHECK: unreachable
52 }
53
54 // Test regular members.
55 // CHECK-LABEL: define linkonce_odr void @_ZN1A16does_not_return2Ev({{.*}})
56 // CHECK-SAME: [[USER_FN_ATTR:#[0-9]+]]
does_not_return2A57 void does_not_return2() __attribute__((noreturn)) {
58 // CHECK: call void @_Z5abortv(){{[^#]*}}
59 abort();
60
61 // CHECK: call void @__ubsan_handle_builtin_unreachable
62 // CHECK: unreachable
63
64 // CHECK: call void @__ubsan_handle_builtin_unreachable
65 // CHECK: unreachable
66 }
67 };
68
69 // CHECK-LABEL: define linkonce_odr void @_ZN1A16does_not_return1Ev()
70 // CHECK-SAME: [[USER_FN_ATTR]]
71 // CHECK: call void @_Z5abortv(){{[^#]*}}
72
force_irgen()73 void force_irgen() {
74 A a;
75 a.call1();
76 a.call2();
77 a.call3();
78 }
79
80 // `noreturn` should be removed from functions and call sites
81 // CHECK-LABEL: attributes
82 // CHECK-NOT: [[USER_FN_ATTR]] = { {{.*noreturn.*}} }
83 // CHECK-NOT: [[EXTERN_FN_ATTR]] = { {{.*noreturn.*}} }
84