3
#if defined(__GNUC__) && !defined(C_ALLOCA)
5
# define alloca __builtin_alloca
7
#else /* ! defined (__GNUC__) */
11
# if defined(HAVE_ALLOCA_H) && !defined(C_ALLOCA)
13
# else /* ! defined (HAVE_ALLOCA_H) */
15
extern PTR alloca (size_t);
16
# else /* ! defined (__STDC__) */
18
# endif /* ! defined (__STDC__) */
19
# endif /* ! defined (HAVE_ALLOCA_H) */
23
# endif /* ! defined (_AIX) */
24
#endif /* ! defined (__GNUC__) */