1  #ifndef _ALLOCA_H
       2  
       3  #include <stdlib/alloca.h>
       4  
       5  # ifndef _ISOMAC
       6  
       7  #include <stackinfo.h>
       8  
       9  #undef	__alloca
      10  
      11  /* Now define the internal interfaces.  */
      12  extern void *__alloca (size_t __size);
      13  
      14  #ifdef	__GNUC__
      15  # define __alloca(size)	__builtin_alloca (size)
      16  #endif /* GCC.  */
      17  
      18  extern int __libc_use_alloca (size_t size) __attribute__ ((const));
      19  extern int __libc_alloca_cutoff (size_t size) __attribute__ ((const));
      20  libc_hidden_proto (__libc_alloca_cutoff)
      21  
      22  #define __MAX_ALLOCA_CUTOFF	65536
      23  
      24  #include <allocalim.h>
      25  
      26  #if defined stackinfo_get_sp && defined stackinfo_sub_sp
      27  # define alloca_account(size, avar) \
      28    ({ void *old__ = stackinfo_get_sp ();					      \
      29       void *m__ = __alloca (size);					      \
      30       avar += stackinfo_sub_sp (old__);					      \
      31       m__; })
      32  #else
      33  # define alloca_account(size, avar) \
      34    ({ size_t s__ = (size);						      \
      35       avar += s__;							      \
      36       __alloca (s__); })
      37  #endif
      38  
      39  # endif /* !_ISOMAC */
      40  #endif