derek.holloway
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41 lines
1.1 KiB
C++
41 lines
1.1 KiB
C++
// Test -fsanitize-memory-use-after-dtor
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// RUN: %clang_cc1 -fsanitize=memory -fsanitize-memory-use-after-dtor -std=c++11 -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s --implicit-check-not="call void @__sanitizer_"
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// The no_sanitize_memory attribute, when applied to a destructor,
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// represses emission of sanitizing callback
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template <class T> class Vector {
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public:
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int size;
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~Vector() {}
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};
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struct No_San {
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Vector<int> v;
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int x;
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No_San() { }
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__attribute__((no_sanitize_memory)) ~No_San() = default;
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};
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int main() {
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No_San *ns = new No_San();
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ns->~No_San();
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return 0;
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}
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// Repressing the sanitization attribute results in no msan
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// instrumentation of the destructor
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// CHECK: define {{.*}}No_SanD1Ev{{.*}} [[ATTRIBUTE:#[0-9]+]]
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// CHECK: ret void
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// CHECK: define {{.*}}No_SanD2Ev{{.*}} [[ATTRIBUTE:#[0-9]+]]
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// CHECK: call void {{.*}}VectorIiED2Ev
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// CHECK: ret void
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// CHECK: define {{.*}}VectorIiED2Ev
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// CHECK: call void @__sanitizer_dtor_callback
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// CHECK: ret void
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// When attribute is repressed, the destructor does not emit any tail calls
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// CHECK-NOT: attributes [[ATTRIBUTE]] = {{.*}} sanitize_memory
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