compiler-rt/test/ubsan/TestCases/Pointer/align-assume-builtin_assume_aligned-three-params.cpp

   1 // RUN: %clang   -x c   -fsanitize=alignment -O0 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="runtime error:"
   2 // RUN: %clang   -x c   -fsanitize=alignment -O1 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="runtime error:"
   3 // RUN: %clang   -x c   -fsanitize=alignment -O2 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="runtime error:"
   4 // RUN: %clang   -x c   -fsanitize=alignment -O3 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="runtime error:"
   5
   6 // RUN: %clangxx -x c++ -fsanitize=alignment -O0 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="runtime error:"
   7 // RUN: %clangxx -x c++ -fsanitize=alignment -O1 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="runtime error:"
   8 // RUN: %clangxx -x c++ -fsanitize=alignment -O2 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="runtime error:"
   9 // RUN: %clangxx -x c++ -fsanitize=alignment -O3 %s -o %t && %run %t 2>&1 | FileCheck %s --implicit-check-not=" assumption " --implicit-check-not="note:" --implicit-check-not="runtime error:"
  10
  11 #include <stdlib.h>
  12
  13 int main(int argc, char* argv[]) {
  14   char *ptr = (char *)malloc(3);
  15
  16   __builtin_assume_aligned(ptr + 2, 0x8000, 1);
  17   // CHECK: {{.*}}align-assume-{{.*}}.cpp:[[@LINE-1]]:32: runtime error: assumption of 32768 byte alignment (with offset of 1 byte) for pointer of type 'char *' failed
  18   // CHECK: 0x{{.*}}: note: offset address is {{.*}} aligned, misalignment offset is {{.*}} byte
  19
  20   free(ptr);
  21
  22   return 0;
  23 }