2006-12-16 Manuel Lopez-Ibanez <manu@gcc.gnu.org>

[pf3gnuchains/gcc-fork.git] / gcc / doc / invoke.texi

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 4a803b3..52b1daa 100644 (file)
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -224,7 +224,8 @@ Objective-C and Objective-C++ Dialects}.
 -w  -Wextra  -Wall  -Waggregate-return -Walways-true -Wno-attributes @gol
 -Wc++-compat -Wcast-align  -Wcast-qual  -Wchar-subscripts  -Wcomment @gol
 -Wconversion  -Wno-deprecated-declarations @gol
--Wdisabled-optimization  -Wno-div-by-zero  -Wno-endif-labels @gol
+-Wdisabled-optimization  -Wno-div-by-zero  @gol
+-Wempty-body  -Wno-endif-labels @gol
 -Werror  -Werror-* -Werror-implicit-function-declaration @gol
 -Wfatal-errors  -Wfloat-equal  -Wformat  -Wformat=2 @gol
 -Wno-format-extra-args -Wformat-nonliteral @gol
@@ -2915,7 +2916,8 @@ void foo(bar) @{ @}
 @end smallexample
 
 @item
-An empty body occurs in an @samp{if} or @samp{else} statement.
+An empty body occurs in an @samp{if} or @samp{else} statement. This
+warning can be independently controlled by @option{-Wempty-body}.
 
 @item
 A pointer is compared against integer zero with @samp{<}, @samp{<=},
@@ -3165,6 +3167,11 @@ like @code{unsigned ui = -1}; and conversions to smaller types, like
 ((int) x)} and @code{ui = (unsigned) -1}, or if the value is not
 changed by the conversion like in @code{abs (2.0)}.
 
+@item -Wempty-body
+@opindex Wempty-body
+An empty body occurs in an @samp{if} or @samp{else} statement. 
+This warning is also enabled by @option{-Wextra}.
+
 @item -Wsign-compare
 @opindex Wsign-compare
 @cindex warning for comparison of signed and unsigned values
@@ -9721,8 +9728,8 @@ blocks inline code is used, while for large blocks library call is used.
 Overwrite internal decision heuristic about particular algorithm to inline
 string operation with.  The allowed values are @code{rep_byte},
 @code{rep_4byte}, @code{rep_8byte} for expanding using i386 @code{rep} prefix
-of specified size, @code{loop}, @code{unrolled_loop} for expanding inline loop,
-@code{libcall} for always expanding library call.
+of specified size, @code{byte_loop}, @code{loop}, @code{unrolled_loop} for
+expanding inline loop, @code{libcall} for always expanding library call.
 
 @item -momit-leaf-frame-pointer
 @opindex momit-leaf-frame-pointer