79 lines · c
1// RUN: %clang_cc1 -triple x86_64-unknown-linux -O0 -fsanitize-cfi-cross-dso \2// RUN: -fsanitize=cfi-icall,cfi-nvcall,cfi-vcall,cfi-unrelated-cast,cfi-derived-cast \3// RUN: -fsanitize-trap=cfi-icall,cfi-nvcall -fsanitize-recover=cfi-vcall,cfi-unrelated-cast \4// RUN: -emit-llvm -o - %s | FileCheck %s5 6void caller(void (*f)(void)) {7 f();8}9 10// CHECK: define weak_odr hidden void @__cfi_check_fail(ptr noundef %0, ptr noundef %1)11// CHECK: store ptr %0, ptr %[[ALLOCA0:.*]], align 812// CHECK: store ptr %1, ptr %[[ALLOCA1:.*]], align 813// CHECK: %[[DATA:.*]] = load ptr, ptr %[[ALLOCA0]], align 814// CHECK: %[[ADDR:.*]] = load ptr, ptr %[[ALLOCA1]], align 815// CHECK: %[[ICMP_NOT_NULL:.*]] = icmp ne ptr %[[DATA]], null16// CHECK: br i1 %[[ICMP_NOT_NULL]], label %[[CONT0:.*]], label %[[TRAP:.*]], !prof17 18// CHECK: [[TRAP]]:19// CHECK-NEXT: call void @llvm.ubsantrap(i8 2)20// CHECK-NEXT: unreachable21 22// CHECK: [[CONT0]]:23// CHECK: %[[KINDPTR:.*]] = getelementptr {{.*}} %[[DATA]], i32 0, i32 024// CHECK: %[[KIND:.*]] = load i8, ptr %[[KINDPTR]], align 425// CHECK: %[[VTVALID0:.*]] = call i1 @llvm.type.test(ptr %[[ADDR]], metadata !"all-vtables")26// CHECK: %[[VTVALID:.*]] = zext i1 %[[VTVALID0]] to i6427// CHECK: %[[NOT_0:.*]] = icmp ne i8 %[[KIND]], 028// CHECK: br i1 %[[NOT_0]], label %[[CONT1:.*]], label %[[HANDLE0:.*]], !prof29 30// CHECK: [[HANDLE0]]:31// CHECK: %[[DATA0:.*]] = ptrtoint ptr %[[DATA]] to i64,32// CHECK: %[[ADDR0:.*]] = ptrtoint ptr %[[ADDR]] to i64,33// CHECK: call void @__ubsan_handle_cfi_check_fail(i64 %[[DATA0]], i64 %[[ADDR0]], i64 %[[VTVALID]])34// CHECK: br label %[[CONT1]]35 36// CHECK: [[CONT1]]:37// CHECK: %[[NOT_1:.*]] = icmp ne i8 %[[KIND]], 138// CHECK: br i1 %[[NOT_1]], label %[[CONT2:.*]], label %[[HANDLE1:.*]], !prof !{{[0-9]+}}, !nosanitize39 40// CHECK: [[HANDLE1]]:41// CHECK-NEXT: call void @llvm.ubsantrap(i8 2)42// CHECK-NEXT: unreachable43 44// CHECK: [[CONT2]]:45// CHECK: %[[NOT_2:.*]] = icmp ne i8 %[[KIND]], 246// CHECK: br i1 %[[NOT_2]], label %[[CONT3:.*]], label %[[HANDLE2:.*]], !prof47 48// CHECK: [[HANDLE2]]:49// CHECK: %[[DATA2:.*]] = ptrtoint ptr %[[DATA]] to i64,50// CHECK: %[[ADDR2:.*]] = ptrtoint ptr %[[ADDR]] to i64,51// CHECK: call void @__ubsan_handle_cfi_check_fail_abort(i64 %[[DATA2]], i64 %[[ADDR2]], i64 %[[VTVALID]])52// CHECK: unreachable53 54// CHECK: [[CONT3]]:55// CHECK: %[[NOT_3:.*]] = icmp ne i8 %[[KIND]], 356// CHECK: br i1 %[[NOT_3]], label %[[CONT4:.*]], label %[[HANDLE3:.*]], !prof57 58// CHECK: [[HANDLE3]]:59// CHECK: %[[DATA3:.*]] = ptrtoint ptr %[[DATA]] to i64,60// CHECK: %[[ADDR3:.*]] = ptrtoint ptr %[[ADDR]] to i64,61// CHECK: call void @__ubsan_handle_cfi_check_fail(i64 %[[DATA3]], i64 %[[ADDR3]], i64 %[[VTVALID]])62// CHECK: br label %[[CONT4]]63 64// CHECK: [[CONT4]]:65// CHECK: %[[NOT_4:.*]] = icmp ne i8 %[[KIND]], 466// CHECK: br i1 %[[NOT_4]], label %[[CONT5:.*]], label %[[HANDLE4:.*]], !prof !{{[0-9]+}}, !nosanitize67 68// CHECK: [[HANDLE4]]:69// CHECK-NEXT: call void @llvm.ubsantrap(i8 2)70// CHECK-NEXT: unreachable71 72// CHECK: [[CONT5]]:73// CHECK: ret void74 75// CHECK: define weak void @__cfi_check(i64 noundef %[[TYPE:.*]], ptr noundef %[[ADDR:.*]], ptr noundef %[[DATA:.*]]){{.*}} align 409676// CHECK-NOT: }77// CHECK: call void @__cfi_check_fail(ptr %[[DATA]], ptr %[[ADDR]])78// CHECK-NEXT: ret void79