866af2d6d1
Summary: Dtor sanitization handled amidst other dtor cleanups, between cleaning bases and fields. Sanitizer call pushed onto stack of cleanup operations. Reviewers: eugenis, kcc Differential Revision: http://reviews.llvm.org/D12022 Refactoring dtor sanitizing emission order. - Support multiple inheritance by poisoning after member destructors are invoked, and before base class destructors are invoked. - Poison for virtual destructor and virtual bases. - Repress dtor aliasing when sanitizing in dtor. - CFE test for dtor aliasing, and repression of aliasing in dtor code generation. - Poison members on field-by-field basis, with collective poisoning of trivial members when possible. - Check msan flags and existence of fields, before dtor sanitizing, and when determining if aliasing is allowed. - Testing sanitizing bit fields. llvm-svn: 246815
85 lines
1.8 KiB
C++
85 lines
1.8 KiB
C++
// Test -fsanitize-memory-use-after-dtor
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// RUN: %clang_cc1 -O0 -fsanitize=memory -fsanitize-memory-use-after-dtor -disable-llvm-optzns -std=c++11 -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s
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// RUN: %clang_cc1 -O1 -fsanitize=memory -fsanitize-memory-use-after-dtor -disable-llvm-optzns -std=c++11 -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s
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// 24 bytes total
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struct Packed {
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// Packed into 4 bytes
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unsigned int a : 1;
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unsigned int b : 1;
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//unsigned int c : 1;
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// Force alignment to next 4 bytes
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unsigned int : 0;
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unsigned int d : 1;
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// Force alignment, 8 more bytes
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double e = 5.0;
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// 4 bytes
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unsigned int f : 1;
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~Packed() {}
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};
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Packed p;
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// 1 byte total
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struct Empty {
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unsigned int : 0;
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~Empty() {}
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};
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Empty e;
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// 4 byte total
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struct Simple {
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unsigned int a : 1;
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~Simple() {}
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};
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Simple s;
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// 8 bytes total
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struct Anon {
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// 1 byte
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unsigned int a : 1;
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unsigned int b : 2;
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// Force alignment to next byte
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unsigned int : 0;
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unsigned int c : 1;
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~Anon() {}
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};
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Anon an;
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struct CharStruct {
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char c;
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~CharStruct();
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};
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struct Adjacent {
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CharStruct a;
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int b : 1;
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CharStruct c;
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~Adjacent() {}
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};
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Adjacent ad;
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// CHECK-LABEL: define {{.*}}PackedD2Ev
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// CHECK: call void @__sanitizer_dtor_callback{{.*}}i64 17
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// CHECK: ret void
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// CHECK-LABEL: define {{.*}}EmptyD2Ev
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// CHECK-NOT: call void @__sanitizer_dtor_callback{{.*}}i64 0
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// CHECK: ret void
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// CHECK-LABEL: define {{.*}}SimpleD2Ev
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// CHECK: call void @__sanitizer_dtor_callback{{.*}}i64 1
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// CHECK: ret void
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// CHECK-LABEL: define {{.*}}AnonD2Ev
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// CHECK: call void @__sanitizer_dtor_callback{{.*}}i64 5
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// CHECK: ret void
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// CHECK-LABEL: define {{.*}}AdjacentD2Ev
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// CHECK: call void @__sanitizer_dtor_callback{{.*}}i64 1
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// CHECK: ret void
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