| 1 | // Test -fsanitize-memory-use-after-dtor |
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| 2 | // RUN: %clang_cc1 -fsanitize=memory -fsanitize-memory-use-after-dtor -std=c++11 -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s |
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| 3 | |
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| 4 | // The no_sanitize_memory attribute, when applied to a destructor, |
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| 5 | // represses emission of sanitizing callback |
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| 6 | |
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| 7 | template <class T> class Vector { |
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| 8 | public: |
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| 9 | int size; |
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| 10 | ~Vector() {} |
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| 11 | }; |
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| 12 | |
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| 13 | struct No_San { |
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| 14 | Vector<int> v; |
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| 15 | int x; |
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| 16 | No_San() { } |
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| 17 | __attribute__((no_sanitize_memory)) ~No_San() = default; |
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| 18 | }; |
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| 19 | |
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| 20 | int main() { |
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| 21 | No_San *ns = new No_San(); |
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| 22 | ns->~No_San(); |
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| 23 | return 0; |
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| 24 | } |
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| 25 | |
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| 26 | // Repressing the sanitization attribute results in no msan |
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| 27 | // instrumentation of the destructor |
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| 28 | // CHECK: define {{.*}}No_SanD1Ev{{.*}} [[ATTRIBUTE:#[0-9]+]] |
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| 29 | // CHECK-NOT: call void {{.*}}sanitizer_dtor_callback |
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| 30 | // CHECK: ret void |
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| 31 | |
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| 32 | // CHECK: define {{.*}}No_SanD2Ev{{.*}} [[ATTRIBUTE:#[0-9]+]] |
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| 33 | // CHECK-NOT: call void {{.*}}sanitizer_dtor_callback |
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| 34 | // CHECK: call void {{.*}}VectorIiED2Ev |
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| 35 | // CHECK-NOT: call void {{.*}}sanitizer_dtor_callback |
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| 36 | // CHECK: ret void |
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| 37 | |
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| 38 | // CHECK: define {{.*}}VectorIiED2Ev |
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| 39 | // CHECK: call void {{.*}}sanitizer_dtor_callback |
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| 40 | // CHECK: ret void |
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| 41 | |
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| 42 | // When attribute is repressed, the destructor does not emit any tail calls |
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| 43 | // CHECK-NOT: attributes [[ATTRIBUTE]] = {{.*}} sanitize_memory |
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| 44 | |
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