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diff --git a/gcc/c.opt b/gcc/c.opt
index 512882bc64b..0635fdca13c 100644
--- a/gcc/c.opt
+++ b/gcc/c.opt
@@ -1,5 +1,5 @@
 ; Options for the C, ObjC, C++ and ObjC++ front ends.
-; Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+; Copyright (C) 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
 ;
 ; This file is part of GCC.
 ;
@@ -116,6 +116,10 @@ Wabi
 C++ ObjC++ Var(warn_abi) Warning
 Warn about things that will change when compiling with an ABI-compliant compiler
 
+Waddress
+C ObjC C++ ObjC++ Var(warn_address) Warning
+Warn about suspicious uses of memory addresses
+
 Wall
 C ObjC C++ ObjC++ Warning
 Enable most warning messages
@@ -129,11 +133,11 @@ C ObjC Var(warn_bad_function_cast) Warning
 Warn about casting functions to incompatible types
 
 Wc++-compat
-C Var(warn_cxx_compat) Warning
+C ObjC Var(warn_cxx_compat) Warning
 Warn about C constructs that are not in the common subset of C and C++
 
 Wc++0x-compat
-C++ ObjC++ Var(warn_cxx0x_compat)
+C++ ObjC++ Var(warn_cxx0x_compat) Warning
 Warn about C++ constructs whose meaning differs between ISO C++ 1998 and ISO C++ 200x
 
 Wcast-qual
@@ -173,7 +177,7 @@ C++ ObjC++ Var(warn_deprecated) Init(1) Warning
 Warn about deprecated compiler features
 
 Wdiv-by-zero
-C ObjC C++ Var(warn_div_by_zero) Init(1) Warning
+C ObjC C++ ObjC++ Var(warn_div_by_zero) Init(1) Warning
 Warn about compile-time integer division by zero
 
 Weffc++
@@ -212,6 +216,10 @@ Wformat-nonliteral
 C ObjC C++ ObjC++ Var(warn_format_nonliteral) Warning
 Warn about format strings that are not literals
 
+Wformat-contains-nul
+C ObjC C++ ObjC++ Var(warn_format_contains_nul) Warning
+Warn about format strings that contain NUL bytes
+
 Wformat-security
 C ObjC C++ ObjC++ Var(warn_format_security) Warning
 Warn about possible security problems with format functions
@@ -263,7 +271,7 @@ C ObjC C++ ObjC++ Var(warn_long_long) Init(1) Warning
 Do not warn about using \"long long\" when -pedantic
 
 Wmain
-C ObjC Warning
+C ObjC C++ ObjC++ Warning
 Warn about suspicious declarations of \"main\"
 
 Wmissing-braces
@@ -446,6 +454,10 @@ Wvariadic-macros
 C ObjC C++ ObjC++ Warning
 Do not warn about using variadic macros when -pedantic
 
+Wvla
+C ObjC C++ ObjC++ Var(warn_vla) Init(-1) Warning
+Warn if a variable length array is used
+
 Wwrite-strings
 C ObjC C++ ObjC++ Var(warn_write_strings) Warning
 In C++, nonzero means warn about deprecated conversion from string literals to `char *'.  In C, similar warning, except that the conversion is of course not deprecated by the ISO C standard.
@@ -539,7 +551,7 @@ C++ ObjC++
 Scope of for-init-statement variables is local to the loop
 
 ffreestanding
-C ObjC
+C ObjC C++ ObjC++
 Do not assume that standard C libraries and \"main\" exist
 
 fgnu-keywords
@@ -550,6 +562,10 @@ fgnu-runtime
 ObjC ObjC++
 Generate code for GNU runtime environment
 
+fgnu89-inline
+C ObjC Var(flag_gnu89_inline) Init(-1)
+Use traditional GNU semantics for inline functions
+
 fguiding-decls
 C++ ObjC++
 
@@ -580,7 +596,7 @@ C++ ObjC++
 Emit implicit instantiations of templates
 
 ffriend-injection
-C++ Var(flag_friend_injection)
+C++ ObjC++ Var(flag_friend_injection)
 Inject friend functions into enclosing namespace
 
 flabels-ok
@@ -775,6 +791,18 @@ gen-decls
 ObjC ObjC++
 Dump declarations to a .decl file
 
+femit-struct-debug-baseonly
+C ObjC C++ ObjC++
+-femit-struct-debug-baseonly	Aggressive reduced debug info for structs
+
+femit-struct-debug-reduced
+C ObjC C++ ObjC++
+-femit-struct-debug-reduced	Conservative reduced debug info for structs
+
+femit-struct-debug-detailed=
+C ObjC C++ ObjC++ Joined
+-femit-struct-debug-detailed=<spec-list>	Detailed reduced debug info for structs
+
 idirafter
 C ObjC C++ ObjC++ Joined Separate
 -idirafter <dir>	Add <dir> to the end of the system include path