derek.holloway
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76 lines
2.5 KiB
C++
76 lines
2.5 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 -debug-info-kind=line-tables-only -o - %s | FileCheck %s --implicit-check-not="call void @__sanitizer_"
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// Sanitizing dtor is emitted in dtor for every class, and only
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// poisons once.
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struct Simple {
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int x;
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~Simple() {}
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};
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Simple s;
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// Simple internal member is poisoned by compiler-generated dtor
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// CHECK-LABEL: define {{.*}}SimpleD1Ev
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// CHECK: call void {{.*}}SimpleD2Ev
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// CHECK: ret void
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struct Inlined {
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int y;
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inline ~Inlined() {}
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};
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Inlined i;
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// Simple internal member is poisoned by compiler-generated dtor
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// CHECK-LABEL: define {{.*}}InlinedD1Ev
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// CHECK: call void {{.*}}InlinedD2Ev
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// CHECK: ret void
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struct Defaulted_Trivial {
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~Defaulted_Trivial() = default;
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};
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void create_def_trivial() {
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Defaulted_Trivial def_trivial;
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}
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// The compiler is explicitly signalled to handle object cleanup.
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// No complex member attributes. Compiler destroys inline, so
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// no destructor defined.
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// CHECK-LABEL: define {{.*}}create_def_trivial
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// CHECK-NOT: call {{.*}}Defaulted_Trivial
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// CHECK: ret void
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struct Defaulted_Non_Trivial {
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Simple s;
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~Defaulted_Non_Trivial() = default;
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};
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Defaulted_Non_Trivial def_non_trivial;
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// Explicitly compiler-generated dtor poisons object.
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// By including a Simple member in the struct, the compiler is
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// forced to generate a non-trivial destructor.
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// CHECK-LABEL: define {{.*}}Defaulted_Non_TrivialD1Ev
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// CHECK: call void {{.*}}Defaulted_Non_TrivialD2
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// CHECK: ret void
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// Note: ordering is important. In the emitted bytecode, these
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// second dtors defined after the first. Explicitly checked here
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// to confirm that all invoked dtors have member poisoning
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// instrumentation inserted.
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// CHECK-LABEL: define {{.*}}SimpleD2Ev
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// CHECK-NOT: store i{{[0-9]+}} 0, {{.*}}@__msan_param_tls
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// CHECK: call void @__sanitizer_dtor_callback_fields({{.*}}, !dbg ![[DI1:[0-9]+]]
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// CHECK: ret void
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// CHECK-LABEL: define {{.*}}InlinedD2Ev
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// CHECK-NOT: store i{{[0-9]+}} 0, {{.*}}@__msan_param_tls
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// CHECK: call void @__sanitizer_dtor_callback_fields({{.*}}, !dbg ![[DI2:[0-9]+]]
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// CHECK: ret void
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// CHECK-LABEL: define {{.*}}Defaulted_Non_TrivialD2Ev
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// CHECK: call void @__sanitizer_dtor_callback_fields({{.*}}, !dbg ![[DI3:[0-9]+]]
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// CHECK: ret void
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// CHECK-LABEL: !DIFile{{.*}}cpp
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// CHECK-DAG: ![[DI1]] = {{.*}}line: [[@LINE-65]]
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// CHECK-DAG: ![[DI2]] = {{.*}}line: [[@LINE-56]]
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// CHECK-DAG: ![[DI3]] = {{.*}}line: [[@LINE-34]]
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