compiler-rt/test/memprof/TestCases/realloc.cpp

   1 // RUN: %clangxx_memprof -O0 %s -o %t
   2 // Default is true (free on realloc to 0 size)
   3 // RUN: %run %t 2>&1 | FileCheck %s
   4 // RUN: %env_memprof_opts=allocator_frees_and_returns_null_on_realloc_zero=true %run %t 2>&1 | FileCheck %s
   5 // RUN: %env_memprof_opts=allocator_frees_and_returns_null_on_realloc_zero=false %run %t 2>&1 | FileCheck %s --check-prefix=NO-FREE
   6
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9
  10 int main() {
  11   void *p = malloc(42);
  12   p = realloc(p, 0);
  13   if (p) {
  14     // NO-FREE: Allocated something on realloc(p, 0)
  15     fprintf(stderr, "Allocated something on realloc(p, 0)\n");
  16   } else {
  17     // CHECK: realloc(p, 0) returned nullptr
  18     fprintf(stderr, "realloc(p, 0) returned nullptr\n");
  19   }
  20   free(p);
  21 }