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Diffstat (limited to 'gl/arg-nonnull.h')
| -rw-r--r-- | gl/arg-nonnull.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gl/arg-nonnull.h b/gl/arg-nonnull.h new file mode 100644 index 0000000..8c76ce6 --- /dev/null +++ b/gl/arg-nonnull.h @@ -0,0 +1,26 @@ +/* A C macro for declaring that specific arguments must not be NULL. + Copyright (C) 2009-2021 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 2.1 of the License, 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 + Lesser 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, see <https://www.gnu.org/licenses/>. */ + +/* _GL_ARG_NONNULL((n,...,m)) tells the compiler and static analyzer tools + that the values passed as arguments n, ..., m must be non-NULL pointers. + n = 1 stands for the first argument, n = 2 for the second argument etc. */ +#ifndef _GL_ARG_NONNULL +# if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3) || defined __clang__ +# define _GL_ARG_NONNULL(params) __attribute__ ((__nonnull__ params)) +# else +# define _GL_ARG_NONNULL(params) +# endif +#endif |