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 // REQUIRES: x86_64-target-arch
   6
   7 #include <sanitizer/dfsan_interface.h>
   8
   9 __attribute__((noinline)) uint64_t foo(uint64_t x, uint64_t y) { return x + y; }
  10
  11 int main(int argc, char *argv[]) {
  12   uint64_t a = 10;
  13   uint64_t b = 20;
  14   dfsan_set_label(8, &a, sizeof(a));
  15   uint64_t c = foo(a, b);
  16   for (int i = 0; i < argc; ++i)
  17     c += foo(c, b);
  18   dfsan_print_origin_trace(&c, NULL);
  19 }
  20
  21 // CHECK: Taint value 0x8 {{.*}} origin tracking ()
  22 // CHECK: Origin value: {{.*}}, Taint value was stored to memory at
  23 // CHECK: #0 {{.*}} in main {{.*}}origin_branch.c:[[@LINE-6]]
  24
  25 // CHECK: Origin value: {{.*}}, Taint value was stored to memory at
  26 // CHECK: #0 {{.*}} in main {{.*}}origin_branch.c:[[@LINE-11]]
  27
  28 // CHECK: Origin value: {{.*}}, Taint value was created at
  29 // CHECK: #0 {{.*}} in main {{.*}}origin_branch.c:[[@LINE-15]]