compiler-rt/test/dfsan/origin_branch.c

   1 // RUN: %clang_dfsan -gmlt -mllvm -dfsan-track-origins=1 %s -o %t && \
   2 // RUN:     %run %t >%t.out 2>&1
   3 // RUN: FileCheck %s < %t.out
   4
   5 #include <sanitizer/dfsan_interface.h>
   6
   7 __attribute__((noinline)) uint64_t foo(uint64_t x, uint64_t y) { return x + y; }
   8
   9 int main(int argc, char *argv[]) {
  10   uint64_t a = 10;
  11   uint64_t b = 20;
  12   dfsan_set_label(8, &a, sizeof(a));
  13   uint64_t c = foo(a, b);
  14   for (int i = 0; i < argc; ++i)
  15     c += foo(c, b);
  16   dfsan_print_origin_trace(&c, NULL);
  17 }
  18
  19 // CHECK: Taint value 0x8 {{.*}} origin tracking ()
  20 // CHECK: Origin value: {{.*}}, Taint value was stored to memory at
  21 // CHECK: #0 {{.*}} in main {{.*}}origin_branch.c:[[@LINE-6]]
  22
  23 // CHECK: Origin value: {{.*}}, Taint value was stored to memory at
  24 // CHECK: #0 {{.*}} in main {{.*}}origin_branch.c:[[@LINE-11]]
  25
  26 // CHECK: Origin value: {{.*}}, Taint value was created at
  27 // CHECK: #0 {{.*}} in main {{.*}}origin_branch.c:[[@LINE-15]]