X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=lib%2Ffseeko.c;h=5bd7d66d9029460141e655743df3978ad648a0ab;hb=92249085071a973e2c0621b0415b93d2e48bb00d;hp=c372a5c142bff33d647c34dc08ef5820936a48fc;hpb=4ee107046a0ffd91f6c60c787326a5e27b799f6d;p=debian%2Fgzip

diff --git a/lib/fseeko.c b/lib/fseeko.c
index c372a5c..5bd7d66 100644
--- a/lib/fseeko.c
+++ b/lib/fseeko.c
@@ -1,5 +1,5 @@
 /* An fseeko() function that, together with fflush(), is POSIX compliant.
-   Copyright (C) 2007-2012 Free Software Foundation, Inc.
+   Copyright (C) 2007-2018 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
@@ -12,14 +12,14 @@
    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 <http://www.gnu.org/licenses/>.  */
+   with this program; if not, see <https://www.gnu.org/licenses/>.  */
 
 #include <config.h>
 
 /* Specification.  */
 #include <stdio.h>
 
-/* Get off_t and lseek.  */
+/* Get off_t, lseek, _POSIX_VERSION.  */
 #include <unistd.h>
 
 #include "stdio-impl.h"
@@ -33,9 +33,9 @@ fseeko (FILE *fp, off_t offset, int whence)
 #endif
 #if _GL_WINDOWS_64_BIT_OFF_T
 # undef fseeko
-# if HAVE__FSEEKI64 /* msvc, mingw64 */
+# if HAVE__FSEEKI64 && HAVE_DECL__FSEEKI64 /* msvc, mingw since msvcrt8.0, mingw64 */
 #  define fseeko _fseeki64
-# else /* mingw */
+# else /* mingw before msvcrt8.0 */
 #  define fseeko fseeko64
 # endif
 #endif
@@ -47,11 +47,13 @@ fseeko (FILE *fp, off_t offset, int whence)
 #endif
 
   /* These tests are based on fpurge.c.  */
-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
+  /* GNU libc, BeOS, Haiku, Linux libc5 */
   if (fp->_IO_read_end == fp->_IO_read_ptr
       && fp->_IO_write_ptr == fp->_IO_write_base
       && fp->_IO_save_base == NULL)
-#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
+#elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
+  /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
 # if defined __SL64 && defined __SCLE /* Cygwin */
   if ((fp->_flags & __SL64) == 0)
     {
@@ -79,7 +81,7 @@ fseeko (FILE *fp, off_t offset, int whence)
 #elif defined __minix               /* Minix */
   if (fp_->_ptr == fp_->_buf
       && (fp_->_ptr == NULL || fp_->_count == 0))
-#elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */
+#elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, MSVC, NonStop Kernel, OpenVMS */
   if (fp_->_ptr == fp_->_base
       && (fp_->_ptr == NULL || fp_->_cnt == 0))
 #elif defined __UCLIBC__            /* uClibc */
@@ -99,8 +101,14 @@ fseeko (FILE *fp, off_t offset, int whence)
 #elif defined EPLAN9                /* Plan9 */
   if (fp->rp == fp->buf
       && fp->wp == fp->buf)
+#elif FUNC_FFLUSH_STDIN < 0 && 200809 <= _POSIX_VERSION
+  /* Cross-compiling to some other system advertising conformance to
+     POSIX.1-2008 or later.  Assume fseeko and fflush work as advertised.
+     If this assumption is incorrect, please report the bug to
+     bug-gnulib.  */
+  if (0)
 #else
-  #error "Please port gnulib fseeko.c to your platform! Look at the code in fpurge.c, then report this to bug-gnulib."
+  #error "Please port gnulib fseeko.c to your platform! Look at the code in fseeko.c, then report this to bug-gnulib."
 #endif
     {
       /* We get here when an fflush() call immediately preceded this one (or
@@ -109,17 +117,20 @@ fseeko (FILE *fp, off_t offset, int whence)
       off_t pos = lseek (fileno (fp), offset, whence);
       if (pos == -1)
         {
-#if defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
+#if defined __sferror || defined __DragonFly__ || defined __ANDROID__
+          /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
           fp_->_flags &= ~__SOFF;
 #endif
           return -1;
         }
 
-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+#if defined _IO_EOF_SEEN || defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1
+      /* GNU libc, BeOS, Haiku, Linux libc5 */
       fp->_flags &= ~_IO_EOF_SEEN;
       fp->_offset = pos;
-#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
-# if defined __CYGWIN__
+#elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
+      /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */
+# if defined __CYGWIN__ || (defined __NetBSD__ && __NetBSD_Version__ >= 600000000) || defined __minix
       /* fp_->_offset is typed as an integer.  */
       fp_->_offset = pos;
 # else
@@ -141,8 +152,8 @@ fseeko (FILE *fp, off_t offset, int whence)
       fp_->_flags &= ~__SEOF;
 #elif defined __EMX__               /* emx+gcc */
       fp->_flags &= ~_IOEOF;
-#elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */
-      fp->_flag &= ~_IOEOF;
+#elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, MSVC, NonStop Kernel, OpenVMS */
+      fp_->_flag &= ~_IOEOF;
 #elif defined __MINT__              /* Atari FreeMiNT */
       fp->__offset = pos;
       fp->__eof = 0;