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authorLudovic Courtès <ludo@gnu.org>2011-07-01 22:34:29 +0200
committerLudovic Courtès <ludo@gnu.org>2011-07-01 22:34:29 +0200
commit231c0e0e61fc4bdd69398e89084b7819f0420710 (patch)
tree097398cd884074bd1d62dfa592fbdd8eda0d9796 /lib
parent97ec95b72873428f215a8a9892487c3a8435a754 (diff)
Update Gnulib to v0.0-5874-g7170ee0.
Diffstat (limited to 'lib')
-rw-r--r--lib/Makefile.am4
-rw-r--r--lib/float.c33
-rw-r--r--lib/float.in.h111
-rw-r--r--lib/isinf.c9
-rw-r--r--lib/pathmax.h15
-rw-r--r--lib/pipe2.c15
-rw-r--r--lib/stat.c8
-rw-r--r--lib/unistd.in.h2
8 files changed, 192 insertions, 5 deletions
diff --git a/lib/Makefile.am b/lib/Makefile.am
index 5ae7948be..fe37ae832 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -420,7 +420,9 @@ float.h: $(top_builddir)/config.status
endif
MOSTLYCLEANFILES += float.h float.h-t
-EXTRA_DIST += float.in.h
+EXTRA_DIST += float.c float.in.h
+
+EXTRA_libgnu_la_SOURCES += float.c
## end gnulib module float
diff --git a/lib/float.c b/lib/float.c
new file mode 100644
index 000000000..e42e08e0a
--- /dev/null
+++ b/lib/float.c
@@ -0,0 +1,33 @@
+/* Auxiliary definitions for <float.h>.
+ Copyright (C) 2011 Free Software Foundation, Inc.
+ Written by Bruno Haible <bruno@clisp.org>, 2011.
+
+ 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 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 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 <http://www.gnu.org/licenses/>. */
+
+#include <config.h>
+
+/* Specification. */
+#include <float.h>
+
+#if (defined _ARCH_PPC || defined _POWER) && defined _AIX && (LDBL_MANT_DIG == 106) && defined __GNUC__
+const union gl_long_double_union gl_LDBL_MAX =
+ { { DBL_MAX, DBL_MAX / (double)134217728UL / (double)134217728UL } };
+#elif defined __i386__
+const union gl_long_double_union gl_LDBL_MAX =
+ { { 0xFFFFFFFF, 0xFFFFFFFF, 32766 } };
+#else
+/* This declaration is solely to ensure that after preprocessing
+ this file is never empty. */
+typedef int dummy;
+#endif
diff --git a/lib/float.in.h b/lib/float.in.h
index 58a5f736e..95dda79b8 100644
--- a/lib/float.in.h
+++ b/lib/float.in.h
@@ -29,6 +29,7 @@
#define _@GUARD_PREFIX@_FLOAT_H
/* 'long double' properties. */
+
#if defined __i386__ && (defined __BEOS__ || defined __OpenBSD__)
/* Number of mantissa units, in base FLT_RADIX. */
# undef LDBL_MANT_DIG
@@ -59,5 +60,115 @@
# define LDBL_MAX_10_EXP 4932
#endif
+/* On FreeBSD/x86 6.4, the 'long double' type really has only 53 bits of
+ precision in the compiler but 64 bits of precision at runtime. See
+ <http://lists.gnu.org/archive/html/bug-gnulib/2008-07/msg00063.html>. */
+#if defined __i386__ && defined __FreeBSD__
+/* Number of mantissa units, in base FLT_RADIX. */
+# undef LDBL_MANT_DIG
+# define LDBL_MANT_DIG 64
+/* Number of decimal digits that is sufficient for representing a number. */
+# undef LDBL_DIG
+# define LDBL_DIG 18
+/* x-1 where x is the smallest representable number > 1. */
+# undef LDBL_EPSILON
+# define LDBL_EPSILON 1.084202172485504434007452800869941711426e-19L /* 2^-63 */
+/* Minimum e such that FLT_RADIX^(e-1) is a normalized number. */
+# undef LDBL_MIN_EXP
+# define LDBL_MIN_EXP (-16381)
+/* Maximum e such that FLT_RADIX^(e-1) is a representable finite number. */
+# undef LDBL_MAX_EXP
+# define LDBL_MAX_EXP 16384
+/* Minimum positive normalized number. */
+# undef LDBL_MIN
+# define LDBL_MIN 3.3621031431120935E-4932L /* = 0x1p-16382L */
+/* Maximum representable finite number. */
+# undef LDBL_MAX
+/* LDBL_MAX is represented as { 0xFFFFFFFF, 0xFFFFFFFF, 32766 }.
+ But the largest literal that GCC allows us to write is
+ 0x0.fffffffffffff8p16384L = { 0xFFFFF800, 0xFFFFFFFF, 32766 }.
+ So, define it like this through a reference to an external variable
+
+ const unsigned int LDBL_MAX[3] = { 0xFFFFFFFF, 0xFFFFFFFF, 32766 };
+ extern const long double LDBL_MAX;
+
+ Unfortunately, this is not a constant expression. */
+union gl_long_double_union
+ {
+ struct { unsigned int lo; unsigned int hi; unsigned int exponent; } xd;
+ long double ld;
+ };
+extern const union gl_long_double_union gl_LDBL_MAX;
+# define LDBL_MAX (gl_LDBL_MAX.ld)
+/* Minimum e such that 10^e is in the range of normalized numbers. */
+# undef LDBL_MIN_10_EXP
+# define LDBL_MIN_10_EXP (-4931)
+/* Maximum e such that 10^e is in the range of representable finite numbers. */
+# undef LDBL_MAX_10_EXP
+# define LDBL_MAX_10_EXP 4932
+#endif
+
+/* On AIX 7.1 with gcc 4.2, the values of LDBL_MIN_EXP, LDBL_MIN, LDBL_MAX are
+ wrong. */
+#if (defined _ARCH_PPC || defined _POWER) && defined _AIX && (LDBL_MANT_DIG == 106) && defined __GNUC__
+# undef LDBL_MIN_EXP
+# define LDBL_MIN_EXP DBL_MIN_EXP
+# undef LDBL_MIN_10_EXP
+# define LDBL_MIN_10_EXP DBL_MIN_10_EXP
+# undef LDBL_MIN
+# define LDBL_MIN 2.22507385850720138309023271733240406422e-308L /* DBL_MIN = 2^-1022 */
+# undef LDBL_MAX
+/* LDBL_MAX is represented as { 0x7FEFFFFF, 0xFFFFFFFF, 0x7C8FFFFF, 0xFFFFFFFF }.
+ It is not easy to define:
+ #define LDBL_MAX 1.79769313486231580793728971405302307166e308L
+ is too small, whereas
+ #define LDBL_MAX 1.79769313486231580793728971405302307167e308L
+ is too large. Apparently a bug in GCC decimal-to-binary conversion.
+ Also, I can't get values larger than
+ #define LDBL63 ((long double) (1ULL << 63))
+ #define LDBL882 (LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63)
+ #define LDBL945 (LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63)
+ #define LDBL1008 (LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63 * LDBL63)
+ #define LDBL_MAX (LDBL1008 * 65535.0L + LDBL945 * (long double) 9223372036821221375ULL + LDBL882 * (long double) 4611686018427387904ULL)
+ which is represented as { 0x7FEFFFFF, 0xFFFFFFFF, 0x7C8FFFFF, 0xF8000000 }.
+ So, define it like this through a reference to an external variable
+
+ const double LDBL_MAX[2] = { DBL_MAX, DBL_MAX / (double)134217728UL / (double)134217728UL };
+ extern const long double LDBL_MAX;
+
+ or through a pointer cast
+
+ #define LDBL_MAX \
+ (*(const long double *) (double[]) { DBL_MAX, DBL_MAX / (double)134217728UL / (double)134217728UL })
+
+ Unfortunately, this is not a constant expression, and the latter expression
+ does not work well when GCC is optimizing.. */
+union gl_long_double_union
+ {
+ struct { double hi; double lo; } dd;
+ long double ld;
+ };
+extern const union gl_long_double_union gl_LDBL_MAX;
+# define LDBL_MAX (gl_LDBL_MAX.ld)
+#endif
+
+/* On IRIX 6.5, with cc, the value of LDBL_MANT_DIG is wrong.
+ On IRIX 6.5, with gcc 4.2, the values of LDBL_MIN_EXP, LDBL_MIN, LDBL_EPSILON
+ are wrong. */
+#if defined __sgi && (LDBL_MANT_DIG >= 106)
+# undef LDBL_MANT_DIG
+# define LDBL_MANT_DIG 106
+# if defined __GNUC__
+# undef LDBL_MIN_EXP
+# define LDBL_MIN_EXP DBL_MIN_EXP
+# undef LDBL_MIN_10_EXP
+# define LDBL_MIN_10_EXP DBL_MIN_10_EXP
+# undef LDBL_MIN
+# define LDBL_MIN 2.22507385850720138309023271733240406422e-308L /* DBL_MIN = 2^-1022 */
+# undef LDBL_EPSILON
+# define LDBL_EPSILON 2.46519032881566189191165176650870696773e-32L /* 2^-105 */
+# endif
+#endif
+
#endif /* _@GUARD_PREFIX@_FLOAT_H */
#endif /* _@GUARD_PREFIX@_FLOAT_H */
diff --git a/lib/isinf.c b/lib/isinf.c
index 28cfc4d49..0531c6f34 100644
--- a/lib/isinf.c
+++ b/lib/isinf.c
@@ -21,17 +21,20 @@
#include <float.h>
-int gl_isinff (float x)
+int
+gl_isinff (float x)
{
return x < -FLT_MAX || x > FLT_MAX;
}
-int gl_isinfd (double x)
+int
+gl_isinfd (double x)
{
return x < -DBL_MAX || x > DBL_MAX;
}
-int gl_isinfl (long double x)
+int
+gl_isinfl (long double x)
{
return x < -LDBL_MAX || x > LDBL_MAX;
}
diff --git a/lib/pathmax.h b/lib/pathmax.h
index 8056fef22..41f0ba276 100644
--- a/lib/pathmax.h
+++ b/lib/pathmax.h
@@ -19,6 +19,12 @@
#ifndef _PATHMAX_H
# define _PATHMAX_H
+/* POSIX:2008 defines PATH_MAX to be the maximum number of bytes in a filename,
+ including the terminating NUL byte.
+ <http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/limits.h.html>
+ PATH_MAX is not defined on systems which have no limit on filename length,
+ such as GNU/Hurd. */
+
# include <unistd.h>
# include <limits.h>
@@ -45,4 +51,13 @@
# define PATH_MAX _POSIX_PATH_MAX
# endif
+# ifdef __hpux
+/* On HP-UX, PATH_MAX designates the maximum number of bytes in a filename,
+ *not* including the terminating NUL byte, and is set to 1023.
+ Additionally, when _XOPEN_SOURCE is defined to 500 or more, PATH_MAX is
+ not defined at all any more. */
+# undef PATH_MAX
+# define PATH_MAX 1024
+# endif
+
#endif /* _PATHMAX_H */
diff --git a/lib/pipe2.c b/lib/pipe2.c
index e1884fadd..bb17264a3 100644
--- a/lib/pipe2.c
+++ b/lib/pipe2.c
@@ -40,6 +40,13 @@
int
pipe2 (int fd[2], int flags)
{
+ /* Mingw _pipe() corrupts fd on failure; also, if we succeed at
+ creating the pipe but later fail at changing fcntl, we want
+ to leave fd unchanged: http://austingroupbugs.net/view.php?id=467 */
+ int tmp[2];
+ tmp[0] = fd[0];
+ tmp[1] = fd[1];
+
#if HAVE_PIPE2
# undef pipe2
/* Try the system call first, if it exists. (We may be running with a glibc
@@ -71,7 +78,11 @@ pipe2 (int fd[2], int flags)
/* Native Woe32 API. */
if (_pipe (fd, 4096, flags & ~O_NONBLOCK) < 0)
- return -1;
+ {
+ fd[0] = tmp[0];
+ fd[1] = tmp[1];
+ return -1;
+ }
/* O_NONBLOCK handling.
On native Windows platforms, O_NONBLOCK is defined by gnulib. Use the
@@ -145,6 +156,8 @@ pipe2 (int fd[2], int flags)
int saved_errno = errno;
close (fd[0]);
close (fd[1]);
+ fd[0] = tmp[0];
+ fd[1] = tmp[1];
errno = saved_errno;
return -1;
}
diff --git a/lib/stat.c b/lib/stat.c
index aa369d0f2..b203172fe 100644
--- a/lib/stat.c
+++ b/lib/stat.c
@@ -38,6 +38,7 @@ orig_stat (const char *filename, struct stat *buf)
#include <stdbool.h>
#include <string.h>
#include "dosname.h"
+#include "verify.h"
/* Store information about NAME into ST. Work around bugs with
trailing slashes. Mingw has other bugs (such as st_ino always
@@ -63,6 +64,12 @@ rpl_stat (char const *name, struct stat *st)
}
#endif /* REPLACE_FUNC_STAT_FILE */
#if REPLACE_FUNC_STAT_DIR
+ /* The only known systems where REPLACE_FUNC_STAT_DIR is needed also
+ have a constant PATH_MAX. */
+# ifndef PATH_MAX
+# error "Please port this replacement to your platform"
+# endif
+
if (result == -1 && errno == ENOENT)
{
/* Due to mingw's oddities, there are some directories (like
@@ -77,6 +84,7 @@ rpl_stat (char const *name, struct stat *st)
char fixed_name[PATH_MAX + 1] = {0};
size_t len = strlen (name);
bool check_dir = false;
+ verify (PATH_MAX <= 4096);
if (PATH_MAX <= len)
errno = ENAMETOOLONG;
else if (len)
diff --git a/lib/unistd.in.h b/lib/unistd.in.h
index 2101bced5..f1878e017 100644
--- a/lib/unistd.in.h
+++ b/lib/unistd.in.h
@@ -1062,6 +1062,7 @@ _GL_WARN_ON_USE (pipe2, "pipe2 is unportable - "
specification <http://www.opengroup.org/susv3xsh/pread.html>. */
# if @REPLACE_PREAD@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef pread
# define pread rpl_pread
# endif
_GL_FUNCDECL_RPL (pread, ssize_t,
@@ -1096,6 +1097,7 @@ _GL_WARN_ON_USE (pread, "pread is unportable - "
<http://www.opengroup.org/susv3xsh/pwrite.html>. */
# if @REPLACE_PWRITE@
# if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+# undef pwrite
# define pwrite rpl_pwrite
# endif
_GL_FUNCDECL_RPL (pwrite, ssize_t,