common.opt (Wlarger-than=): New.

2008-02-26  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

	* common.opt (Wlarger-than=): New.
	* doc/invoke.texi (Warning Options): Replace -Wlarger-than- with
	-Wlarger-than=.
	* opts.c (common_handle_option): Handle -Wlarger-than=.
	* optc-gen.awk: Likewise.
	* opth-gen.awk: Likewise.
	* stor-layout.c (layout_decl): Use -Wlarger-than= for warning.
	* tree-optimize.c (tree_rest_of_compilation): Likewise.
testsuite/
	* gcc.dg/Wlarger-than2.c: New.

From-SVN: r132674

gcc/ChangeLog

+2008-02-26  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
+
+	* common.opt (Wlarger-than=): New.
+	* doc/invoke.texi (Warning Options): Replace -Wlarger-than- with
+	-Wlarger-than=.
+	* opts.c (common_handle_option): Handle -Wlarger-than=.
+	* optc-gen.awk: Likewise.
+	* opth-gen.awk: Likewise.
+	* stor-layout.c (layout_decl): Use -Wlarger-than= for warning.
+	* tree-optimize.c (tree_rest_of_compilation): Likewise.
+	
 2008-02-26  Manuel Lopez-Ibanez <manu@gcc.gnu.org>
 
 	* c-common.c (match_case_to_enum_1): Add appropriate

gcc/common.opt

@@ -127,7 +127,10 @@ Warn when an inlined function cannot be inlined
 
 Wlarger-than-
 Common RejectNegative Joined UInteger Warning
--Wlarger-than-<number>	Warn if an object is larger than <number> bytes
+
+Wlarger-than=
+Common RejectNegative Joined UInteger Warning
+-Wlarger-than=<number>	Warn if an object is larger than <number> bytes
 
 Wlogical-op
 Common Warning Var(warn_logical_op)

gcc/doc/invoke.texi

@@ -241,7 +241,7 @@ Objective-C and Objective-C++ Dialects}.
 -Wimplicit  -Wimplicit-function-declaration  -Wimplicit-int @gol
 -Wimport  -Wno-import  -Winit-self  -Winline @gol
 -Wno-int-to-pointer-cast -Wno-invalid-offsetof @gol
--Winvalid-pch -Wlarger-than-@var{len}  -Wunsafe-loop-optimizations @gol
+-Winvalid-pch -Wlarger-than=@var{len}  -Wunsafe-loop-optimizations @gol
 -Wlogical-op -Wlong-long @gol
 -Wmain  -Wmissing-braces  -Wmissing-field-initializers @gol
 -Wmissing-format-attribute  -Wmissing-include-dirs @gol
@@ -3516,7 +3516,8 @@ Do not warn whenever an @samp{#else} or an @samp{#endif} are followed by text.
 Warn whenever a local variable shadows another local variable, parameter or
 global variable or whenever a built-in function is shadowed.
 
-@item -Wlarger-than-@var{len}
+@item -Wlarger-than=@var{len}
+@opindex Wlarger-than=@var{len}
 @opindex Wlarger-than-@var{len}
 Warn whenever an object of larger than @var{len} bytes is defined.
 

gcc/optc-gen.awk

@@ -150,7 +150,7 @@ for (i = 0; i < n_opts; i++) {
 
 	len = length (opts[i]);
 	enum = "OPT_" opts[i]
-	if (opts[i] == "finline-limit=")
+	if (opts[i] == "finline-limit=" || opts[i] == "Wlarger-than=")
 		enum = enum "eq"
 	gsub ("[^A-Za-z0-9]", "_", enum)
 

gcc/opth-gen.awk

@@ -160,7 +160,7 @@ for (i = 0; i < n_opts; i++) {
 
 	len = length (opts[i]);
 	enum = "OPT_" opts[i]
-	if (opts[i] == "finline-limit=")
+	if (opts[i] == "finline-limit=" || opts[i] == "Wlarger-than=")
 		enum = enum "eq"
 	gsub ("[^A-Za-z0-9]", "_", enum)
 

gcc/opts.c

@@ -1540,6 +1540,11 @@ common_handle_option (size_t scode, const char *arg, int value,
       break;
 
     case OPT_Wlarger_than_:
+      /* This form corresponds to -Wlarger-than-.  
+	 Kept for backward compatibility. 
+	 Don't use it as the first argument of warning().  */
+
+    case OPT_Wlarger_than_eq:
       larger_than_size = value;
       warn_larger_than = value != -1;
       break;

gcc/stor-layout.c

@@ -464,9 +464,9 @@ layout_decl (tree decl, unsigned int known_align)
 	  int size_as_int = TREE_INT_CST_LOW (size);
 
 	  if (compare_tree_int (size, size_as_int) == 0)
-	    warning (OPT_Wlarger_than_, "size of %q+D is %d bytes", decl, size_as_int);
+	    warning (OPT_Wlarger_than_eq, "size of %q+D is %d bytes", decl, size_as_int);
 	  else
-	    warning (OPT_Wlarger_than_, "size of %q+D is larger than %wd bytes",
+	    warning (OPT_Wlarger_than_eq, "size of %q+D is larger than %wd bytes",
                      decl, larger_than_size);
 	}
     }

gcc/testsuite/ChangeLog

+2008-02-26  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
+
+	* gcc.dg/Wlarger-than2.c: New.
+	
 2008-02-26  Paolo Carlini  <pcarlini@suse.de>
 
         PR c++/35323

gcc/testsuite/gcc.dg/Wlarger-than2.c

+/* { dg-do compile } */
+/* { dg-options "-Wlarger-than=8" } */
+static void foo (void) 
+{
+  char buf[9]; /* { dg-warning "size of.*9 bytes" } */
+}
+

gcc/tree-optimize.c

@@ -427,10 +427,10 @@ tree_rest_of_compilation (tree fndecl)
 	    = TREE_INT_CST_LOW (TYPE_SIZE_UNIT (ret_type));
 
 	  if (compare_tree_int (TYPE_SIZE_UNIT (ret_type), size_as_int) == 0)
-	    warning (OPT_Wlarger_than_, "size of return value of %q+D is %u bytes",
+	    warning (OPT_Wlarger_than_eq, "size of return value of %q+D is %u bytes",
                      fndecl, size_as_int);
 	  else
-	    warning (OPT_Wlarger_than_, "size of return value of %q+D is larger than %wd bytes",
+	    warning (OPT_Wlarger_than_eq, "size of return value of %q+D is larger than %wd bytes",
                      fndecl, larger_than_size);
 	}
     }