winsup/cygwin/cxx.cc

   1 /* cxx.cc
   2
   3 This file is part of Cygwin.
   4
   5 This software is a copyrighted work licensed under the terms of the
   6 Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
   7 details. */
   8
   9 #if (__GNUC__ >= 3)
  10
  11 #include "winsup.h"
  12 #include "cygwin-cxx.h"
  13
  14 /* These implementations of operators new and delete are used internally by
  15    the DLL, and are kept separate from the user's/libstdc++'s versions by
  16    use of LD's --wrap option.  */
  17
  18 void *
  19 operator new (std::size_t s)
  20 {
  21   void *p = calloc (1, s);
  22   return p;
  23 }
  24
  25 void
  26 operator delete (void *p)
  27 {
  28   free (p);
  29 }
  30
  31 #pragma GCC diagnostic push
  32 #pragma GCC diagnostic ignored "-Wc++14-compat"
  33 void
  34 operator delete (void *p, size_t)
  35 {
  36   ::operator delete(p);
  37 }
  38 #pragma GCC diagnostic pop
  39
  40 void *
  41 operator new[] (std::size_t s)
  42 {
  43   return ::operator new (s);
  44 }
  45
  46 void
  47 operator delete[] (void *p)
  48 {
  49   ::operator delete (p);
  50 }
  51
  52 /* Nothrow versions, provided only for completeness in the fallback array.  */
  53
  54 void *
  55 operator new (std::size_t s, const std::nothrow_t &)
  56 {
  57   void *p = calloc (1, s);
  58   return p;
  59 }
  60
  61 void
  62 operator delete (void *p, const std::nothrow_t &)
  63 {
  64   free (p);
  65 }
  66
  67 void *
  68 operator new[] (std::size_t s, const std::nothrow_t &nt)
  69 {
  70   return ::operator new (s, nt);
  71 }
  72
  73 void
  74 operator delete[] (void *p, const std::nothrow_t &nt)
  75 {
  76   ::operator delete (p, nt);
  77 }
  78
  79
  80 extern "C" void
  81 __cxa_pure_virtual (void)
  82 {
  83   api_fatal ("pure virtual method called");
  84 }
  85
  86 /* These routines are made available as last-resort fallbacks
  87    for the application.  Should not be used in practice; the
  88    entries in this struct get overwritten by each DLL as it
  89    is loaded, and libstdc++ will override the whole lot first
  90    thing of all.   */
  91
  92 struct per_process_cxx_malloc default_cygwin_cxx_malloc =
  93 {
  94   &(operator new),
  95   &(operator new[]),
  96   &(operator delete),
  97   &(operator delete[]),
  98   &(operator new),
  99   &(operator new[]),
 100   &(operator delete),
 101   &(operator delete[]),
 102 };
 103
 104
 105 #endif