| 1 | // RUN: %clang_cl_asan %Od %s %Fe%t |
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| 2 | // RUN: not %run %t 2>&1 | FileCheck %s |
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| 3 | |
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| 4 | class Parent { |
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| 5 | public: |
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| 6 | int field; |
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| 7 | }; |
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| 8 | |
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| 9 | class Child : public Parent { |
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| 10 | public: |
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| 11 | int ; |
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| 12 | }; |
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| 13 | |
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| 14 | int main(void) { |
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| 15 | Parent p; |
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| 16 | Child *c = (Child*)&p; // Intentional error here! |
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| 17 | c->extra_field = 42; |
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| 18 | // CHECK: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] |
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| 19 | // CHECK: WRITE of size 4 at [[ADDR]] thread T0 |
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| 20 | // CHECK-NEXT: {{#0 0x[0-9a-f]* in main .*wrong_downcast_on_stack.cpp}}:[[@LINE-3]] |
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| 21 | // CHECK: [[ADDR]] is located in stack of thread T0 at offset [[OFFSET:[0-9]+]] in frame |
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| 22 | // CHECK-NEXT: {{#0 0x[0-9a-f]* in main }} |
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| 23 | // CHECK: 'p'{{.*}} <== Memory access at offset [[OFFSET]] overflows this variable |
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| 24 | return 0; |
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| 25 | } |
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| 26 | |
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| 27 | |
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