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author | Ludovic Courtès <ludo@gnu.org> | 2008-08-21 22:23:59 +0200 |
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committer | Ludovic Courtès <ludo@gnu.org> | 2008-08-21 22:23:59 +0200 |
commit | 103dc4d4d297ed7522e36415869f60d81f9cbc5a (patch) | |
tree | fae864e72562f841ed95f3e5f36cc12b2de807c6 /lib/alloca.in.h | |
parent | 417566ebc9dc51fc65b490a96213059e17994dde (diff) | |
download | guile-103dc4d4d297ed7522e36415869f60d81f9cbc5a.tar.gz |
Add Gnulib-provided files for convenience.
These come from Gnulib's Git commit
ae3a0d62f26d8156b403e40d6007475006f3136f, dated 2008-08-19.
Diffstat (limited to 'lib/alloca.in.h')
-rw-r--r-- | lib/alloca.in.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/lib/alloca.in.h b/lib/alloca.in.h new file mode 100644 index 000000000..3d4f88b35 --- /dev/null +++ b/lib/alloca.in.h @@ -0,0 +1,56 @@ +/* Memory allocation on the stack. + + Copyright (C) 1995, 1999, 2001-2004, 2006-2008 Free Software + Foundation, Inc. + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published + by the Free Software Foundation; either version 2, or (at your option) + any later version. + + This program 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 Lesser General Public + License along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, + USA. */ + +/* Avoid using the symbol _ALLOCA_H here, as Bison assumes _ALLOCA_H + means there is a real alloca function. */ +#ifndef _GL_ALLOCA_H +#define _GL_ALLOCA_H + +/* alloca (N) returns a pointer to N bytes of memory + allocated on the stack, which will last until the function returns. + Use of alloca should be avoided: + - inside arguments of function calls - undefined behaviour, + - in inline functions - the allocation may actually last until the + calling function returns, + - for huge N (say, N >= 65536) - you never know how large (or small) + the stack is, and when the stack cannot fulfill the memory allocation + request, the program just crashes. + */ + +#ifndef alloca +# ifdef __GNUC__ +# define alloca __builtin_alloca +# elif defined _AIX +# define alloca __alloca +# elif defined _MSC_VER +# include <malloc.h> +# define alloca _alloca +# elif defined __DECC && defined __VMS +# define alloca __ALLOCA +# else +# include <stddef.h> +# ifdef __cplusplus +extern "C" +# endif +void *alloca (size_t); +# endif +#endif + +#endif /* _GL_ALLOCA_H */ |