71 lines
1.7 KiB
C++
71 lines
1.7 KiB
C++
// RUN: %clangxx_msan %s -O0 -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && MSAN_OPTIONS=poison_in_dtor=1 %run %t
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// RUN: %clangxx_msan %s -O1 -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && MSAN_OPTIONS=poison_in_dtor=1 %run %t
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// RUN: %clangxx_msan %s -O2 -fsanitize=memory -fsanitize-memory-use-after-dtor -o %t && MSAN_OPTIONS=poison_in_dtor=1 %run %t
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#include <sanitizer/msan_interface.h>
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#include <assert.h>
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// TODO: remove empty dtors when msan use-after-dtor poisons
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// for trivial classes with undeclared dtors
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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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// Force alignment to next 4 bytes
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unsigned int : 0;
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unsigned int c : 1;
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// Force alignment, 8 more bytes
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double d = 5.0;
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// 4 bytes
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unsigned int e : 1;
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~Packed() {}
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};
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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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// 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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struct Anon {
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unsigned int a : 1;
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unsigned int b : 2;
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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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int main() {
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Packed *p = new Packed();
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p->~Packed();
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for (int i = 0; i < 4; i++)
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assert(__msan_test_shadow(((char*)p) + i, sizeof(char)) != -1);
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assert(__msan_test_shadow(&p->d, sizeof(double)) != -1);
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assert(__msan_test_shadow(((char*)(&p->d)) + sizeof(double), sizeof(char)) !=
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-1);
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Empty *e = new Empty();
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e->~Empty();
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assert(__msan_test_shadow(e, sizeof(*e)) != -1);
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Simple *s = new Simple();
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s->~Simple();
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assert(__msan_test_shadow(s, sizeof(*s)) != -1);
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Anon *a = new Anon();
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a->~Anon();
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assert(__msan_test_shadow(a, sizeof(*a)) != -1);
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return 0;
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}
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