Imported Upstream version 1.4.17

[platform/upstream/m4.git] / lib / fpurge.c

diff --git a/lib/fpurge.c b/lib/fpurge.c
index 7e69fb4..e00187d 100644 (file)
--- a/lib/fpurge.c
+++ b/lib/fpurge.c
@@ -1,5 +1,5 @@
 /* Flushing buffers of a FILE stream.
-   Copyright (C) 2007-2011 Free Software Foundation, Inc.
+   Copyright (C) 2007-2013 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
@@ -29,13 +29,13 @@
 int
 fpurge (FILE *fp)
 {
-#if HAVE___FPURGE                   /* glibc >= 2.2, Haiku, Solaris >= 7 */
+#if HAVE___FPURGE                   /* glibc >= 2.2, Haiku, Solaris >= 7, musl libc */
 
   __fpurge (fp);
   /* The __fpurge function does not have a return value.  */
   return 0;
 
-#elif HAVE_FPURGE                   /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin 1.7 */
+#elif HAVE_FPURGE                   /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin 1.7 */
 
   /* Call the system's fpurge function.  */
 # undef fpurge
@@ -43,7 +43,7 @@ fpurge (FILE *fp)
   extern int fpurge (FILE *);
 # endif
   int result = fpurge (fp);
-# if defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
+# if defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin */
   if (result == 0)
     /* Correct the invariants that fpurge broke.
        <stdio.h> on BSD systems says:
@@ -71,7 +71,7 @@ fpurge (FILE *fp)
       fp->_IO_save_base = NULL;
     }
   return 0;
-# elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
+# elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin */
   fp_->_p = fp_->_bf._base;
   fp_->_r = 0;
   fp_->_w = ((fp_->_flags & (__SLBF | __SNBF | __SRD)) == 0 /* fully buffered and not currently reading? */
@@ -91,6 +91,11 @@ fpurge (FILE *fp)
   fp->_wcount = 0;
   fp->_ungetc_count = 0;
   return 0;
+# elif defined __minix              /* Minix */
+  fp->_ptr = fp->_buf;
+  if (fp->_ptr != NULL)
+    fp->_count = 0;
+  return 0;
 # elif defined _IOERR               /* AIX, HP-UX, IRIX, OSF/1, Solaris, OpenServer, mingw, NonStop Kernel */
   fp->_ptr = fp->_base;
   if (fp->_ptr != NULL)
@@ -129,6 +134,9 @@ fpurge (FILE *fp)
   /* Nothing in the buffer, next putc is nontrivial.  */
   fp->__put_limit = fp->__buffer;
   return 0;
+# elif defined EPLAN9               /* Plan9 */
+  fp->rp = fp->wp = fp->lp = fp->buf;
+  return 0;
 # else
 #  error "Please port gnulib fpurge.c to your platform! Look at the definitions of fflush, setvbuf and ungetc on your system, then report this to bug-gnulib."
 # endif