84 lines
2.3 KiB
C++
84 lines
2.3 KiB
C++
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// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s -fsanitize=unreachable | FileCheck %s
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void abort() __attribute__((noreturn));
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// CHECK-LABEL: define{{.*}} void @_Z14calls_noreturnv()
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void calls_noreturn() {
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// Check absence ([^#]*) of call site attributes (including noreturn)
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// CHECK: call void @_Z5abortv(){{[^#]*}}
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abort();
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// CHECK: __ubsan_handle_builtin_unreachable
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// CHECK: unreachable
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}
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struct A {
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// CHECK: declare void @_Z5abortv() [[EXTERN_FN_ATTR:#[0-9]+]]
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// CHECK-LABEL: define linkonce_odr void @_ZN1A5call1Ev
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void call1() {
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// CHECK: call void @_ZN1A16does_not_return2Ev({{.*}}){{[^#]*}}
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does_not_return2();
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// CHECK: __ubsan_handle_builtin_unreachable
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// CHECK: unreachable
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}
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// Test static members. Checks are below after `struct A` scope ends.
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static void does_not_return1() __attribute__((noreturn)) {
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abort();
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}
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// CHECK-LABEL: define linkonce_odr void @_ZN1A5call2Ev
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void call2() {
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// CHECK: call void @_ZN1A16does_not_return1Ev(){{[^#]*}}
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does_not_return1();
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// CHECK: __ubsan_handle_builtin_unreachable
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// CHECK: unreachable
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}
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// Test calls through pointers to non-static member functions.
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typedef void (A::*MemFn)() __attribute__((noreturn));
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// CHECK-LABEL: define linkonce_odr void @_ZN1A5call3Ev
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void call3() {
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MemFn MF = &A::does_not_return2;
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// CHECK: call void %{{[0-9]+\(.*}}){{[^#]*}}
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(this->*MF)();
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// CHECK: __ubsan_handle_builtin_unreachable
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// CHECK: unreachable
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}
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// Test regular members.
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// CHECK-LABEL: define linkonce_odr void @_ZN1A16does_not_return2Ev({{.*}})
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// CHECK-SAME: [[USER_FN_ATTR:#[0-9]+]]
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void does_not_return2() __attribute__((noreturn)) {
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// CHECK: call void @_Z5abortv(){{[^#]*}}
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abort();
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// CHECK: call void @__ubsan_handle_builtin_unreachable
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// CHECK: unreachable
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// CHECK: call void @__ubsan_handle_builtin_unreachable
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// CHECK: unreachable
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}
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};
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// CHECK-LABEL: define linkonce_odr void @_ZN1A16does_not_return1Ev()
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// CHECK-SAME: [[USER_FN_ATTR]]
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// CHECK: call void @_Z5abortv(){{[^#]*}}
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void force_irgen() {
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A a;
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a.call1();
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a.call2();
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a.call3();
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}
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// `noreturn` should be removed from functions and call sites
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// CHECK-LABEL: attributes
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// CHECK-NOT: [[USER_FN_ATTR]] = { {{.*noreturn.*}} }
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// CHECK-NOT: [[EXTERN_FN_ATTR]] = { {{.*noreturn.*}} }
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