compiler-rt/test/ubsan/TestCases/Pointer/nullptr-and-nonzero-offset-constants.cpp

   1 // RUN: %clang -x c -fsanitize=pointer-overflow -O0 %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK,CHECK-C --implicit-check-not="runtime error:"
   2 // RUN: %clang -x c -fsanitize=pointer-overflow -O1 %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK,CHECK-C --implicit-check-not="runtime error:"
   3 // RUN: %clang -x c -fsanitize=pointer-overflow -O2 %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK,CHECK-C --implicit-check-not="runtime error:"
   4 // RUN: %clang -x c -fsanitize=pointer-overflow -O3 %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK,CHECK-C --implicit-check-not="runtime error:"
   5
   6 // RUN: %clangxx    -fsanitize=pointer-overflow -O0 %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK,CHECK-CPP --implicit-check-not="runtime error:"
   7 // RUN: %clangxx    -fsanitize=pointer-overflow -O1 %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK,CHECK-CPP --implicit-check-not="runtime error:"
   8 // RUN: %clangxx    -fsanitize=pointer-overflow -O2 %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK,CHECK-CPP --implicit-check-not="runtime error:"
   9 // RUN: %clangxx    -fsanitize=pointer-overflow -O3 %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK,CHECK-CPP --implicit-check-not="runtime error:"
  10
  11 #include <stdlib.h>
  12
  13 int main(int argc, char *argv[]) {
  14   char *base, *result;
  15
  16   base = (char *)0;
  17   result = base + 0;
  18   // CHECK-C: {{.*}}.cpp:[[@LINE-1]]:17: runtime error: applying zero offset to null pointer
  19   // CHECK-CPP-NOT: runtime error:
  20
  21   base = (char *)0;
  22   result = base + 1;
  23   // CHECK: {{.*}}.cpp:[[@LINE-1]]:17: runtime error: applying non-zero offset 1 to null pointer
  24
  25   base = (char *)1;
  26   result = base - 1;
  27   // CHECK: {{.*}}.cpp:[[@LINE-1]]:17: runtime error: applying non-zero offset to non-null pointer 0x{{.*}} produced null pointer
  28
  29   return 0;
  30 }