forked from OSchip/llvm-project
21 lines
721 B
C
21 lines
721 B
C
// RUN: %clang_dfsan -gmlt -mllvm -dfsan-fast-16-labels=true -mllvm -dfsan-track-origins=1 %s -o %t && \
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// RUN: %run %t >%t.out 2>&1
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// RUN: FileCheck %s --check-prefix=CHECK < %t.out
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//
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// REQUIRES: x86_64-target-arch
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#include <sanitizer/dfsan_interface.h>
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int main(int argc, char *argv[]) {
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uint64_t a = 10;
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dfsan_set_label(8, &a, sizeof(a));
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size_t origin_addr =
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(((size_t)&a & ~0x700000000000LL + 0x200000000000LL) & ~0x3UL);
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asm("mov %0, %%rax": :"r"(origin_addr));
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asm("movq $0, (%rax)");
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dfsan_print_origin_trace(&a, "invalid");
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}
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// CHECK: Taint value 0x8 (at {{.*}}) origin tracking (invalid)
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// CHECK: Taint value 0x8 (at {{.*}}) has invalid origin tracking. This can be a DFSan bug.
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