compiler-rt/test/asan/TestCases/contiguous_container_crash.cpp

   1 // RUN: %clangxx_asan -O %s -o %t
   2 // RUN: not %run %t crash 2>&1 | FileCheck --check-prefix=CHECK-CRASH %s
   3 // RUN: not %run %t bad-bounds 2>&1 | FileCheck --check-prefix=CHECK-BAD-BOUNDS %s
   4 // RUN: not %run %t unaligned-bad-bounds 2>&1 | FileCheck --check-prefix=CHECK-UNALIGNED-BAD-BOUNDS %s --implicit-check-not="beg is not aligned by"
   5 // RUN: not %run %t odd-alignment 2>&1 | FileCheck --check-prefix=CHECK-CRASH %s
   6 // RUN: not %run %t odd-alignment-end 2>&1 | FileCheck --check-prefix=CHECK-CRASH %s
   7 // RUN: %env_asan_opts=detect_container_overflow=0 %run %t crash
   8 //
   9 // Test crash due to __sanitizer_annotate_contiguous_container.
  10
  11 #include <assert.h>
  12 #include <string.h>
  13
  14 extern "C" {
  15 void __sanitizer_annotate_contiguous_container(const void *beg, const void *end,
  16                                                const void *old_mid,
  17                                                const void *new_mid);
  18 }  // extern "C"
  19
  20 static volatile int one = 1;
  21
  22 int TestCrash() {
  23   long t[100];
  24   t[60] = 0;
  25   __sanitizer_annotate_contiguous_container(&t[0], &t[0] + 100, &t[0] + 100,
  26                                             &t[0] + 50);
  27 // CHECK-CRASH: AddressSanitizer: container-overflow
  28 // CHECK-CRASH: if you don't care about these errors you may set ASAN_OPTIONS=detect_container_overflow=0
  29   return (int)t[60 * one];  // Touches the poisoned memory.
  30 }
  31
  32 void BadBounds() {
  33   long t[100];
  34 // CHECK-BAD-BOUNDS: ERROR: AddressSanitizer: bad parameters to __sanitizer_annotate_contiguous_container
  35   __sanitizer_annotate_contiguous_container(&t[0], &t[0] + 100, &t[0] + 101,
  36                                             &t[0] + 50);
  37 }
  38
  39 void UnalignedBadBounds() {
  40   char t[100];
  41   // CHECK-UNALIGNED-BAD-BOUNDS: ERROR: AddressSanitizer: bad parameters to __sanitizer_annotate_contiguous_container
  42   __sanitizer_annotate_contiguous_container(&t[1], &t[0] + 100, &t[0] + 101,
  43                                             &t[0] + 50);
  44 }
  45
  46 int OddAlignment() {
  47   int t[100];
  48   t[60] = 0;
  49   __sanitizer_annotate_contiguous_container(&t[1], &t[0] + 100, &t[0] + 100,
  50                                             &t[1] + 50);
  51   return (int)t[60 * one]; // Touches the poisoned memory.
  52 }
  53
  54 int OddAlignmentEnd() {
  55   int t[99];
  56   t[60] = 0;
  57   __sanitizer_annotate_contiguous_container(&t[0], &t[0] + 98, &t[0] + 98,
  58                                             &t[0] + 50);
  59   return (int)t[60 * one]; // Touches the poisoned memory.
  60 }
  61
  62 int main(int argc, char **argv) {
  63   assert(argc == 2);
  64   if (!strcmp(argv[1], "crash"))
  65     return TestCrash();
  66   else if (!strcmp(argv[1], "bad-bounds"))
  67     BadBounds();
  68   else if (!strcmp(argv[1], "unaligned-bad-bounds"))
  69     UnalignedBadBounds();
  70   else if (!strcmp(argv[1], "odd-alignment"))
  71     return OddAlignment();
  72   else if (!strcmp(argv[1], "odd-alignment-end"))
  73     return OddAlignmentEnd();
  74   return 0;
  75 }