sources/cxx-stl/gabi++/tests/libtest_malloc_lockup.cpp

// Copyright (C) 2011 The Android Open Source Project
// All rights reserved.
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#include <stdlib.h>
#include <unistd.h>

#include <cxxabi.h>

#define PAYLOAD(s)   s, sizeof(s) - 1

// Override malloc() and free() to ensure they are never called!
//
// Because GAbi++ is statically linked into this shared library with -Bsymbolic,
// any malloc() and free() calls it contains will be compiled as direct calls to
// this function, bypassing the dynamic linker's PLT indirections and avoiding
// the symbols from the C library.
extern "C" void* malloc(size_t size) {
  write(2, PAYLOAD("ERROR: malloc called!"));
  exit(1);
}

extern "C" void free(void*) {
  write(2, PAYLOAD("ERROR: free called!"));
  exit(2);
}

// Called by the test program to force creation of a thread-specific
// C++ runtime object.
extern "C" void* get_globals() {
  return (void*) __cxxabiv1::__cxa_get_globals();
}