| 1 | // RUN: %clang_cc1 -triple x86_64-unknown-linux -fvisibility hidden -fsanitize=cfi-nvcall -emit-llvm -o - %s | FileCheck %s |
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| 2 | // RUN: %clang_cc1 -triple x86_64-unknown-linux -fvisibility hidden -fsanitize=cfi-nvcall,cfi-cast-strict -emit-llvm -o - %s | FileCheck --check-prefix=CHECK-STRICT %s |
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| 3 | |
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| 4 | struct A { |
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| 5 | virtual void f(); |
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| 6 | }; |
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| 7 | |
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| 8 | struct B : A { |
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| 9 | int i; |
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| 10 | void g(); |
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| 11 | }; |
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| 12 | |
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| 13 | struct C : A { |
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| 14 | void g(); |
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| 15 | }; |
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| 16 | |
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| 17 | // CHECK-LABEL: @bg |
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| 18 | // CHECK-STRICT-LABEL: @bg |
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| 19 | extern "C" void bg(B *b) { |
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| 20 | // CHECK: call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"_ZTS1B") |
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| 21 | // CHECK-STRICT: call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"_ZTS1B") |
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| 22 | b->g(); |
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| 23 | } |
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| 24 | |
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| 25 | // CHECK-LABEL: @cg |
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| 26 | // CHECK-STRICT-LABEL: @cg |
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| 27 | extern "C" void cg(C *c) { |
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| 28 | // http://clang.llvm.org/docs/ControlFlowIntegrity.html#strictness |
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| 29 | // In this case C's layout is the same as its base class, so we allow |
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| 30 | // c to be of type A in non-strict mode. |
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| 31 | |
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| 32 | // CHECK: call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"_ZTS1A") |
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| 33 | // CHECK-STRICT: call i1 @llvm.type.test(i8* {{%[^ ]*}}, metadata !"_ZTS1C") |
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| 34 | c->g(); |
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| 35 | } |
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| 36 | |
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