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

   1 // RUN: %clangxx -fsanitize=alignment -fno-sanitize-recover=alignment                           -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption "
   2
   3 // RUN: rm -f %tmp
   4 // RUN: echo "[alignment]" >> %tmp
   5 // RUN: echo "fun:main" >> %tmp
   6 // RUN: %clangxx -fsanitize=alignment -fno-sanitize-recover=alignment -fsanitize-ignorelist=%tmp -O0 %s -o %t && %run %t 2>&1
   7
   8 #include <stdlib.h>
   9
  10 int main(int argc, char* argv[]) {
  11   char *ptr = (char *)malloc(2);
  12
  13   __builtin_assume_aligned(ptr + 1, 0x8000);
  14   // CHECK: {{.*}}align-assume-ignorelist.cpp:[[@LINE-1]]:32: runtime error: assumption of 32768 byte alignment for pointer of type 'char *' failed
  15   // CHECK: 0x{{.*}}: note: address is {{.*}} aligned, misalignment offset is {{.*}} byte
  16
  17   free(ptr);
  18
  19   return 0;
  20 }