os_defines.h (_GLIBCXX_FIONREAD_TAKES_OFF_T): Define.

	* config/os/irix/irix6.5/os_defines.h (_GLIBCXX_FIONREAD_TAKES_OFF_T):
	Define.
	* config/io/basic_file_stdio.cc (__basic_file<char>::showmanyc): Use
	it to decide whether FIONREAD should take an off_t or int argument.

From-SVN: r77336

libstdc++-v3/ChangeLog

+2004-02-05  Richard Sandiford  <rsandifo@redhat.com>
+
+	* config/os/irix/irix6.5/os_defines.h (_GLIBCXX_FIONREAD_TAKES_OFF_T):
+	Define.
+	* config/io/basic_file_stdio.cc (__basic_file<char>::showmanyc): Use
+	it to decide whether FIONREAD should take an off_t or int argument.
+
 2004-02-05  Paolo Carlini  <pcarlini@suse.de>
 
 	* include/bits/stl_function.h: Minor formatting changes.

libstdc++-v3/config/io/basic_file_stdio.cc

@@ -267,7 +267,11 @@ namespace std
   {
 #ifdef FIONREAD
     // Pipes and sockets.    
+#ifdef _GLIBCXX_FIONREAD_TAKES_OFF_T
+    off_t __num = 0;
+#else
     int __num = 0;
+#endif
     int __r = ioctl(this->fd(), FIONREAD, &__num);
     if (!__r && __num >= 0)
       return __num; 

libstdc++-v3/config/os/irix/irix6.5/os_defines.h

@@ -51,5 +51,8 @@
 // GCC does not use thunks on IRIX. 
 #define _G_USING_THUNKS 0
 
+// FINOREAD takes an "off_t *" as argument.
+#define _GLIBCXX_FIONREAD_TAKES_OFF_T
+
 #endif