compiler-rt/test/ubsan/TestCases/Pointer/align-assume-summary.cpp

   1 // RUN: %clangxx -fsanitize=alignment %s -o %t
   2 // RUN: %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-NOTYPE
   3 // RUN: %env_ubsan_opts=report_error_type=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-TYPE
   4
   5 #include <stdlib.h>
   6
   7 int main(int argc, char* argv[]) {
   8   char *ptr = (char *)malloc(2);
   9
  10   __builtin_assume_aligned(ptr + 1, 0x8000);
  11   // CHECK-NOTYPE: SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior {{.*}}summary.cpp:[[@LINE-1]]:32
  12   // CHECK-TYPE: SUMMARY: UndefinedBehaviorSanitizer: alignment-assumption {{.*}}summary.cpp:[[@LINE-2]]:32
  13   free(ptr);
  14
  15   return 0;
  16 }