38 lines
1.2 KiB
Plaintext
38 lines
1.2 KiB
Plaintext
# Check for variable-length arrays.
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#serial 1
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# From Paul Eggert
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# Copyright (C) 2001 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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# 02111-1307, USA.
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AC_DEFUN([AC_C_VARARRAYS],
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[
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AC_CACHE_CHECK([for variable-length arrays],
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ac_cv_c_vararrays,
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[AC_TRY_COMPILE(
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[],
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[static int x; char a[++x]; a[sizeof a - 1] = 0; return a[0];],
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ac_cv_c_vararrays=yes,
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ac_cv_c_vararrays=no)])
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if test $ac_cv_c_vararrays = yes; then
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AC_DEFINE(HAVE_C_VARARRAYS, 1,
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[Define to 1 if C supports variable-length arrays.])
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fi
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])
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