test-stddef: test for (some) offsetof bugs

[gnulib.git] / lib / freading.c

diff --git a/lib/freading.c b/lib/freading.c
index f20affc..bb78a1b 100644 (file)
--- a/lib/freading.c
+++ b/lib/freading.c
@@ -1,5 +1,5 @@
 /* Retrieve information about a FILE stream.
-   Copyright (C) 2007-2009 Free Software Foundation, Inc.
+   Copyright (C) 2007-2010 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
@@ -33,24 +33,33 @@ freading (FILE *fp)
      fast macros.  */
 #if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
   return ((fp->_flags & _IO_NO_WRITES) != 0
-         || ((fp->_flags & (_IO_NO_READS | _IO_CURRENTLY_PUTTING)) == 0
-             && fp->_IO_read_base != NULL));
+          || ((fp->_flags & (_IO_NO_READS | _IO_CURRENTLY_PUTTING)) == 0
+              && fp->_IO_read_base != NULL));
 #elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
   return (fp_->_flags & __SRD) != 0;
 #elif defined __EMX__               /* emx+gcc */
   return (fp->_flags & _IOREAD) != 0;
 #elif defined _IOERR                /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw */
+# if defined __sun                  /* Solaris */
+  return (fp->_flag & _IOREAD) != 0 && (fp->_flag & _IOWRT) == 0;
+# else
   return (fp->_flag & _IOREAD) != 0;
+# endif
 #elif defined __UCLIBC__            /* uClibc */
   return (fp->__modeflags & (__FLAG_READONLY | __FLAG_READING)) != 0;
 #elif defined __QNX__               /* QNX */
   return ((fp->_Mode & 0x2 /* _MOPENW */) == 0
-         || (fp->_Mode & 0x1000 /* _MREAD */) != 0);
+          || (fp->_Mode & 0x1000 /* _MREAD */) != 0);
 #elif defined __MINT__              /* Atari FreeMiNT */
-  return (!fp->__mode.__write
-         || (fp->__mode.__read
-             && (fp->__buffer < fp->__get_limit
-                 /*|| fp->__bufp == fp->__put_limit ??*/)));
+  if (!fp->__mode.__write)
+    return 1;
+  if (!fp->__mode.__read)
+    return 0;
+# ifdef _IO_CURRENTLY_GETTING /* Flag added on 2009-02-28 */
+  return (fp->__flags & _IO_CURRENTLY_GETTING) != 0;
+# else
+  return (fp->__buffer < fp->__get_limit /*|| fp->__bufp == fp->__put_limit ??*/);
+# endif
 #else
  #error "Please port gnulib freading.c to your platform!"
 #endif