derek.holloway
7502bf64a4
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35 lines
921 B
C++
35 lines
921 B
C++
// RUN: %clang_cl_asan %Od %s %Fe%t
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// RUN: not %run %t 2>&1 | FileCheck %s
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#include <windows.h>
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typedef struct _S {
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unsigned int bf1:1;
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unsigned int bf2:2;
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unsigned int bf3:3;
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unsigned int bf4:4;
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} S;
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void make_access(S *s) {
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s->bf2 = 2;
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// CHECK: AddressSanitizer: heap-use-after-free on address [[ADDR:0x[0-9a-f]+]]
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// CHECK: READ of size {{[124]}} at [[ADDR]]
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// CHECK: {{#0 .* make_access.*bitfield_uaf.cpp}}:[[@LINE-3]]
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// CHECK: {{#1 .* main}}
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}
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int main(void) {
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S *s = (S*)malloc(sizeof(S));
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free(s);
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// CHECK: [[ADDR]] is located 0 bytes inside of 4-byte region
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// CHECK-LABEL: freed by thread T0 here:
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// CHECK: {{#0 .* free }}
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// CHECK: {{ #[1-3] .* main .*bitfield_uaf.cpp}}:[[@LINE-4]]
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// CHECK-LABEL: previously allocated by thread T0 here:
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// CHECK: {{#0 .* malloc }}
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// CHECK: {{ #[1-3] .* main .*bitfield_uaf.cpp}}:[[@LINE-8]]
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make_access(s);
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return 0;
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}
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