compiler-rt/test/dfsan/origin_unaligned_memtrans.c

   1 // RUN: %clang_dfsan -gmlt -DOFFSET=0 -mllvm -dfsan-track-origins=1 %s -o %t && \
   2 // RUN:     %run %t >%t.out 2>&1
   3 // RUN: FileCheck %s --check-prefix=CHECK0 < %t.out
   4 //
   5 // RUN: %clang_dfsan -gmlt -DOFFSET=10 -mllvm -dfsan-track-origins=1 %s -o %t && \
   6 // RUN:     %run %t >%t.out 2>&1
   7 // RUN: FileCheck %s --check-prefix=CHECK10 < %t.out
   8
   9 #include <sanitizer/dfsan_interface.h>
  10
  11 #include <string.h>
  12
  13 char xx[10000];
  14 char yy[10000];
  15 volatile int idx = 30;
  16
  17 __attribute__((noinline)) void fn_g(char a, char b) {
  18   xx[idx] = a; xx[idx + 10] = b;
  19 }
  20
  21 __attribute__((noinline)) void fn_f(char a, char b) {
  22   fn_g(a, b);
  23 }
  24
  25 __attribute__((noinline)) void fn_h() {
  26   memcpy(&yy[2], &xx[2], sizeof(xx) - 4);
  27 }
  28
  29 __attribute__((noinline)) void fn_i() {
  30   memmove(&yy[25], &yy, 7500);
  31 }
  32
  33 int main(int argc, char *argv[]) {
  34   char volatile z1 = 0;
  35   int volatile buffer = 0;
  36   char volatile z2 = 0;
  37   dfsan_set_label(8, (void *)&z1, sizeof(z1));
  38   dfsan_set_label(16, (void *)&z2, sizeof(z2));
  39   fn_f(z1, z2);
  40   fn_h();
  41   fn_i();
  42   dfsan_print_origin_trace(&yy[25 + idx + OFFSET], NULL);
  43   return 0;
  44 }
  45
  46 // CHECK0: Taint value 0x8 {{.*}} origin tracking ()
  47 // CHECK0: Origin value: {{.*}}, Taint value was stored to memory at
  48 // CHECK0: #0 {{.*}} in fn_i.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-18]]
  49 // CHECK0: #1 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-8]]
  50
  51 // CHECK0: Origin value: {{.*}}, Taint value was stored to memory at
  52 // CHECK0: #0 {{.*}} in fn_h.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-26]]
  53 // CHECK0: #1 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-13]]
  54
  55 // CHECK0: Origin value: {{.*}}, Taint value was stored to memory at
  56 // CHECK0: #0 {{.*}} in fn_g.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-38]]
  57 // CHECK0: #1 {{.*}} in fn_f.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-35]]
  58 // CHECK0: #2 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-19]]
  59
  60 // CHECK0: Origin value: {{.*}}, Taint value was created at
  61 // CHECK0: #0 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-24]]
  62
  63 // CHECK10: Taint value 0x10 {{.*}} origin tracking
  64 // CHECK10: Origin value: {{.*}}, Taint value was stored to memory at
  65 // CHECK10: #0 {{.*}} in fn_i.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-35]]
  66 // CHECK10: #1 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-25]]
  67
  68 // CHECK10: Origin value: {{.*}}, Taint value was stored to memory at
  69 // CHECK10: #0 {{.*}} in fn_h.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-43]]
  70 // CHECK10: #1 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-30]]
  71
  72 // CHECK10: Origin value: {{.*}}, Taint value was stored to memory at
  73 // CHECK10: #0 {{.*}} in fn_g.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-55]]
  74 // CHECK10: #1 {{.*}} in fn_f.dfsan {{.*}}origin_unaligned_memtrans.c:[[@LINE-52]]
  75 // CHECK10: #2 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-36]]
  76
  77 // CHECK10: Origin value: {{.*}}, Taint value was created at
  78 // CHECK10: #0 {{.*}} in main {{.*}}origin_unaligned_memtrans.c:[[@LINE-40]]