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-rw-r--r--include/memalloc.h62
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diff --git a/include/memalloc.h b/include/memalloc.h
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--- /dev/null
+++ b/include/memalloc.h
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+/* memalloc.h -- consolidate code for including alloca.h or malloc.h and
+ defining alloca. */
+
+/* Copyright (C) 1993 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash, the Bourne Again SHell.
+
+ Bash is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Bash is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Bash. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#if !defined (_MEMALLOC_H_)
+# define _MEMALLOC_H_
+
+#if defined (sparc) && defined (sun) && !defined (HAVE_ALLOCA_H)
+# define HAVE_ALLOCA_H
+#endif
+
+#if defined (__GNUC__) && !defined (HAVE_ALLOCA)
+# define HAVE_ALLOCA
+#endif
+
+#if defined (HAVE_ALLOCA_H) && !defined (HAVE_ALLOCA) && !defined (C_ALLOCA)
+# define HAVE_ALLOCA
+#endif /* HAVE_ALLOCA_H && !HAVE_ALLOCA */
+
+#if defined (__GNUC__) && !defined (C_ALLOCA)
+# undef alloca
+# define alloca __builtin_alloca
+#else /* !__GNUC__ || C_ALLOCA */
+# if defined (HAVE_ALLOCA_H) && !defined (C_ALLOCA)
+# if defined (IBMESA)
+# include <malloc.h>
+# else /* !IBMESA */
+# include <alloca.h>
+# endif /* !IBMESA */
+# else /* !HAVE_ALLOCA_H || C_ALLOCA */
+# if defined (__hpux) && defined (__STDC__) && !defined (alloca)
+extern void *alloca ();
+# else
+# if !defined (alloca)
+# if defined (__STDC__)
+extern void *alloca (size_t);
+# else
+extern char *alloca ();
+# endif /* !__STDC__ */
+# endif /* !alloca */
+# endif /* !__hpux || !__STDC__ && !alloca */
+# endif /* !HAVE_ALLOCA_H || C_ALLOCA */
+#endif /* !__GNUC__ || C_ALLOCA */
+
+#endif /* _MEMALLOC_H_ */