Specializations of error functions.

1 files changed, 72 insertions, 0 deletions

diff --git a/misc/bits/error.h b/misc/bits/error.h
new file mode 100644
index 0000000000..7089768c3b
--- /dev/null
+++ b/misc/bits/error.h
@@ -0,0 +1,72 @@
+/* Specializations for error functions.
+   Copyright (C) 2007 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library 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 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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 the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#ifndef	_ERROR_H
+# error "Never include <bits/error2.h> directly; use <error.h> instead."
+#endif
+
+
+extern void __REDIRECT (__error_alias, (int __status, int __errnum,
+					const char *__format, ...),
+			error)
+  __attribute__ ((__format__ (__printf__, 3, 4)));
+extern void __REDIRECT (__error_noreturn, (int __status, int __errnum,
+					const char *__format, ...),
+			error)
+  __attribute__ ((__noreturn__, __format__ (__printf__, 3, 4)));
+
+
+/* If we know the function will never return make sure the compiler
+   realizes that, too.  */
+__extern_always_inline void
+error (int __status, int __errnum, const char *__format, ...)
+{
+  if (__builtin_constant_p (__status) && __status != 0)
+    __error_noreturn (__status, __errnum, __format, __va_arg_pack ());
+  else
+    __error_alias (__status, __errnum, __format, __va_arg_pack ());
+}
+
+
+extern void __REDIRECT (__error_at_line_alias, (int __status, int __errnum,
+						const char *__fname,
+						unsigned int __line,
+						const char *__format, ...),
+			error_at_line)
+  __attribute__ ((__format__ (__printf__, 5, 6)));
+extern void __REDIRECT (__error_at_line_noreturn, (int __status, int __errnum,
+						   const char *__fname,
+						   unsigned int __line,
+						   const char *__format, ...),
+			error_at_line)
+  __attribute__ ((__noreturn__, __format__ (__printf__, 5, 6)));
+
+
+/* If we know the function will never return make sure the compiler
+   realizes that, too.  */
+__extern_always_inline void
+error_at_line (int __status, int __errnum, const char *__format, ...)
+{
+  if (__builtin_constant_p (__status) && __status != 0)
+    __error_at_line_noreturn (__status, __errnum, __fname, __line, __format,
+			      __va_arg_pack ());
+  else
+    __error_at_line_alias (__status, __errnum, __fname, __line,
+			   __format, __va_arg_pack ());
+}