derek.holloway
7502bf64a4
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76 lines
2.8 KiB
C
76 lines
2.8 KiB
C
// __cfi_check_fail codegen when not all CFI checkers are enabled.
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// RUN: %clang_cc1 -triple x86_64-unknown-linux -O0 -fsanitize-cfi-cross-dso \
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// RUN: -fsanitize=cfi-vcall \
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// RUN: -emit-llvm -o - %s | FileCheck %s
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// Check that ignorelist does not affect generated code.
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// RUN: echo "src:*" > %t-all.ignorelist
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// RUN: %clang_cc1 -triple x86_64-unknown-linux -O0 -fsanitize-cfi-cross-dso \
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// RUN: -fsanitize=cfi-vcall -fsanitize-ignorelist=%t-all.ignorelist \
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// RUN: -emit-llvm -o - %s | FileCheck %s
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void caller(void (*f)(void)) {
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f();
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}
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// CHECK: define weak_odr hidden void @__cfi_check_fail(ptr noundef %0, ptr noundef %1)
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// CHECK: store ptr %0, ptr %[[ALLOCA0:.*]], align 8
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// CHECK: store ptr %1, ptr %[[ALLOCA1:.*]], align 8
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// CHECK: %[[DATA:.*]] = load ptr, ptr %[[ALLOCA0]], align 8
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// CHECK: %[[ADDR:.*]] = load ptr, ptr %[[ALLOCA1]], align 8
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// CHECK: %[[ICMP_NOT_NULL:.*]] = icmp ne ptr %[[DATA]], null
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// CHECK: br i1 %[[ICMP_NOT_NULL]], label %[[CONT0:.*]], label %[[TRAP:.*]], !prof
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// CHECK: [[TRAP]]:
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// CHECK-NEXT: call void @llvm.ubsantrap(i8 2)
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// CHECK-NEXT: unreachable
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// CHECK: [[CONT0]]:
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// CHECK: %[[KINDPTR:.*]] = getelementptr {{.*}} %[[DATA]], i32 0, i32 0
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// CHECK: %[[KIND:.*]] = load i8, ptr %[[KINDPTR]], align 4
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// CHECK: %[[VTVALID0:.*]] = call i1 @llvm.type.test(ptr %[[ADDR]], metadata !"all-vtables")
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// CHECK: %[[VTVALID:.*]] = zext i1 %[[VTVALID0]] to i64
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// CHECK: %[[NOT_0:.*]] = icmp ne i8 %[[KIND]], 0
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// CHECK: br i1 %[[NOT_0]], label %[[CONT1:.*]], label %[[HANDLE0:.*]], !prof
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// CHECK: [[HANDLE0]]:
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// CHECK: %[[DATA0:.*]] = ptrtoint ptr %[[DATA]] to i64,
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// CHECK: %[[ADDR0:.*]] = ptrtoint ptr %[[ADDR]] to i64,
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// CHECK: call void @__ubsan_handle_cfi_check_fail_abort(i64 %[[DATA0]], i64 %[[ADDR0]], i64 %[[VTVALID]])
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// CHECK: unreachable
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// CHECK: [[CONT1]]:
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// CHECK: %[[NOT_1:.*]] = icmp ne i8 %[[KIND]], 1
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// CHECK: br i1 %[[NOT_1]], label %[[CONT2:.*]], label %[[HANDLE1:.*]], !prof
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// CHECK: [[HANDLE1]]:
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// CHECK-NEXT: call void @llvm.ubsantrap(i8 2)
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// CHECK-NEXT: unreachable
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// CHECK: [[CONT2]]:
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// CHECK: %[[NOT_2:.*]] = icmp ne i8 %[[KIND]], 2
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// CHECK: br i1 %[[NOT_2]], label %[[CONT3:.*]], label %[[HANDLE2:.*]], !prof
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// CHECK: [[HANDLE2]]:
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// CHECK-NEXT: call void @llvm.ubsantrap(i8 2)
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// CHECK-NEXT: unreachable
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// CHECK: [[CONT3]]:
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// CHECK: %[[NOT_3:.*]] = icmp ne i8 %[[KIND]], 3
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// CHECK: br i1 %[[NOT_3]], label %[[CONT4:.*]], label %[[HANDLE3:.*]], !prof
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// CHECK: [[HANDLE3]]:
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// CHECK-NEXT: call void @llvm.ubsantrap(i8 2)
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// CHECK-NEXT: unreachable
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// CHECK: [[CONT4]]:
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// CHECK: %[[NOT_4:.*]] = icmp ne i8 %[[KIND]], 4
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// CHECK: br i1 %[[NOT_4]], label %[[CONT5:.*]], label %[[HANDLE4:.*]], !prof
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// CHECK: [[HANDLE4]]:
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// CHECK-NEXT: call void @llvm.ubsantrap(i8 2)
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// CHECK-NEXT: unreachable
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// CHECK: [[CONT5]]:
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// CHECK: ret void
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