Mercurial > gnulib
view lib/fwriting.h @ 40227:5207eb0dcd2a
tests: Avoid havoc with "gcc -fcheck-pointer-bounds".
* tests/test-fprintf-posix2.c: Skip the test when -fcheck-pointer-bounds
is in use.
* tests/test-printf-posix2.c: Likewise.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sun, 10 Mar 2019 17:09:30 +0100 |
parents | b06060465f09 |
children |
line wrap: on
line source
/* Retrieve information about a FILE stream. Copyright (C) 2007, 2009-2019 Free Software Foundation, Inc. This program 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. 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 General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. */ #include <stdbool.h> #include <stdio.h> /* Return true if the stream STREAM is opened write-only or append-only, or if the last operation on the stream was a write operation. Return false if the stream is opened read-only, or if it supports reading and there is no current write operation (such as fputc). freading and fwriting will never both be true. If STREAM supports both reads and writes, then: - both freading and fwriting might be false when the stream is first opened, after read encounters EOF, or after fflush, - freading might be false or true and fwriting might be false after repositioning (such as fseek, fsetpos, or rewind), depending on the underlying implementation. STREAM must not be wide-character oriented. */ #if HAVE___FWRITING /* glibc >= 2.2, Solaris >= 7, Android API >= 29, musl libc */ # include <stdio_ext.h> # define fwriting(stream) (__fwriting (stream) != 0) #else # ifdef __cplusplus extern "C" { # endif extern bool fwriting (FILE *stream) _GL_ATTRIBUTE_PURE; # ifdef __cplusplus } # endif #endif