2018-02-06 Joseph Myers <joseph@codesourcery.com>
+ [BZ #13575]
+ * posix/bits/posix1_lim.h: Include <bits/wordsize.h>.
+ [!SSIZE_MAX && !(__WORDSIZE == 64 || __WORDSIZE32_SIZE_ULONG)]
+ (SSIZE_MAX): Define to INT_MAX.
+ * posix/test-ssize-max.c: New file.
+ * posix/Makefile (tests): Add test-ssize-max.
+
[BZ #19668]
* sysdeps/powerpc/fpu/tst-setcontext-fpscr.c: Include
<support/support.h>. Do not include <malloc.h>.
tst-posix_spawn-fd tst-posix_spawn-setsid \
tst-posix_fadvise tst-posix_fadvise64 \
tst-sysconf-empty-chroot tst-glob_symlinks tst-fexecve \
- tst-glob-tilde
+ tst-glob-tilde test-ssize-max
tests-internal := bug-regex5 bug-regex20 bug-regex33 \
tst-rfc3484 tst-rfc3484-2 tst-rfc3484-3 \
tst-glob_lstat_compat
#ifndef _BITS_POSIX1_LIM_H
#define _BITS_POSIX1_LIM_H 1
+#include <bits/wordsize.h>
/* These are the standard-mandated minimum values. */
#ifndef SSIZE_MAX
-# define SSIZE_MAX LONG_MAX
+/* ssize_t is not formally required to be the signed type
+ corresponding to size_t, but it is for all configurations supported
+ by glibc. */
+# if __WORDSIZE == 64 || __WORDSIZE32_SIZE_ULONG
+# define SSIZE_MAX LONG_MAX
+# else
+# define SSIZE_MAX INT_MAX
+# endif
#endif
--- /dev/null
+/* Test SSIZE_MAX value and type.
+ Copyright (C) 2018 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library 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.
+
+ The GNU C Library 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 the GNU C Library; if not, see
+ <http://www.gnu.org/licenses/>. */
+
+#include <limits.h>
+#include <sys/types.h>
+
+/* Test SSIZE_MAX has type ssize_t. */
+ssize_t x;
+extern __typeof (SSIZE_MAX) x;
+
+/* Test the value of SSIZE_MAX. */
+_Static_assert (SSIZE_MAX == (sizeof (ssize_t) == sizeof (int)
+ ? INT_MAX
+ : LONG_MAX),
+ "value of SSIZE_MAX");
+
+static int
+do_test (void)
+{
+ /* This is a compilation test. */
+ return 0;
+}
+
+#include <support/test-driver.c>