kbuild: scripts/genksyms/lex.l: add %option noinput

gcc 4.3 correctly determines that input() is unused and gives the
following warning:

<--  snip  -->

...
  HOSTCC  scripts/genksyms/lex.o
scripts/genksyms/lex.c:1487: warning: ‘input’ defined but not used
...

<--  snip  -->

Fix it by adding %option noinput to scripts/genksyms/lex.l and
regeneration of scripts/genksyms/lex.c_shipped.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

scripts/genksyms/lex.c_shipped

@@ -6,10 +6,19 @@
 
 /* A lexical scanner generated by flex */
 
+/* %not-for-header */
+
+/* %if-c-only */
+/* %if-not-reentrant */
+
+/* %endif */
+/* %endif */
+/* %ok-for-header */
+
 #define FLEX_SCANNER
 #define YY_FLEX_MAJOR_VERSION 2
 #define YY_FLEX_MINOR_VERSION 5
-#define YY_FLEX_SUBMINOR_VERSION 33
+#define YY_FLEX_SUBMINOR_VERSION 35
 #if YY_FLEX_SUBMINOR_VERSION > 0
 #define FLEX_BETA
 #endif
@@ -47,7 +56,7 @@
 
 /* C99 systems have <inttypes.h>. Non-C99 systems may or may not. */
 
-#if __STDC_VERSION__ >= 199901L
+#if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
 
 /* C99 says to define __STDC_LIMIT_MACROS before including stdint.h,
  * if you want the limit (max/min) macros for int types. 
@@ -70,7 +79,6 @@ typedef int flex_int32_t;
 typedef unsigned char flex_uint8_t; 
 typedef unsigned short int flex_uint16_t;
 typedef unsigned int flex_uint32_t;
-#endif /* ! C99 */
 
 /* Limits of integral types. */
 #ifndef INT8_MIN
@@ -101,6 +109,8 @@ typedef unsigned int flex_uint32_t;
 #define UINT32_MAX             (4294967295U)
 #endif
 
+#endif /* ! C99 */
+
 #endif /* ! FLEXINT_H */
 
 /* %endif */
@@ -115,11 +125,12 @@ typedef unsigned int flex_uint32_t;
 
 #else	/* ! __cplusplus */
 
-#if __STDC__
+/* C99 requires __STDC__ to be defined as 1. */
+#if defined (__STDC__)
 
 #define YY_USE_CONST
 
-#endif	/* __STDC__ */
+#endif	/* defined (__STDC__) */
 #endif	/* ! __cplusplus */
 
 #ifdef YY_USE_CONST
@@ -218,14 +229,9 @@ extern FILE *yyin, *yyout;
 
 #define unput(c) yyunput( c, (yytext_ptr)  )
 
-/* The following is because we cannot portably get our hands on size_t
- * (without autoconf's help, which isn't available because we want
- * flex-generated scanners to compile on their own).
- */
-
 #ifndef YY_TYPEDEF_YY_SIZE_T
 #define YY_TYPEDEF_YY_SIZE_T
-typedef unsigned int yy_size_t;
+typedef size_t yy_size_t;
 #endif
 
 #ifndef YY_STRUCT_YY_BUFFER_STATE
@@ -401,7 +407,7 @@ void yyfree (void *  );
 /* %% [1.0] yytext/yyin/yyout/yy_state_type/yylineno etc. def's & init go here */
 /* Begin user sect3 */
 
-#define yywrap() 1
+#define yywrap(n) 1
 #define YY_SKIP_YYWRAP
 
 #define FLEX_DEBUG
@@ -613,8 +619,8 @@ int yy_flex_debug = 1;
 
 static yyconst flex_int16_t yy_rule_linenum[13] =
     {   0,
-       69,   70,   71,   74,   77,   78,   79,   85,   86,   87,
-       89,   92
+       71,   72,   73,   76,   79,   80,   81,   87,   88,   89,
+       91,   94
     } ;
 
 /* The intent behind this definition is that it'll catch
@@ -665,7 +671,8 @@ char *yytext;
    quite so pedantic.  */
 
 /* We don't do multiple input files.  */
-#line 669 "scripts/genksyms/lex.c"
+#define YY_NO_INPUT 1
+#line 676 "scripts/genksyms/lex.c"
 
 #define INITIAL 0
 #define V2_TOKENS 1
@@ -695,9 +702,39 @@ static int yy_init_globals (void );
 /* %endif */
 /* %if-reentrant */
 /* %endif */
+/* %endif End reentrant structures and macros. */
+
+/* Accessor methods to globals.
+   These are made visible to non-reentrant scanners for convenience. */
+
+int yylex_destroy (void );
+
+int yyget_debug (void );
+
+void yyset_debug (int debug_flag  );
+
+YY_EXTRA_TYPE yyget_extra (void );
+
+void yyset_extra (YY_EXTRA_TYPE user_defined  );
+
+FILE *yyget_in (void );
+
+void yyset_in  (FILE * in_str  );
+
+FILE *yyget_out (void );
+
+void yyset_out  (FILE * out_str  );
+
+int yyget_leng (void );
+
+char *yyget_text (void );
+
+int yyget_lineno (void );
+
+void yyset_lineno (int line_number  );
+
 /* %if-bison-bridge */
 /* %endif */
-/* %endif End reentrant structures and macros. */
 
 /* Macros after this point can all be overridden by user definitions in
  * section 1.
@@ -756,7 +793,7 @@ static int input (void );
 /* This used to be an fputs(), but since the string might contain NUL's,
  * we now use fwrite().
  */
-#define ECHO (void) fwrite( yytext, yyleng, 1, yyout )
+#define ECHO fwrite( yytext, yyleng, 1, yyout )
 /* %endif */
 /* %if-c++-only C++ definition */
 /* %endif */
@@ -881,12 +918,12 @@ YY_DECL
 	register int yy_act;
     
 /* %% [7.0] user's declarations go here */
-#line 65 "scripts/genksyms/lex.l"
+#line 67 "scripts/genksyms/lex.l"
 
 
 
  /* Keep track of our location in the original source files.  */
-#line 890 "scripts/genksyms/lex.c"
+#line 927 "scripts/genksyms/lex.c"
 
 	if ( !(yy_init) )
 		{
@@ -1004,42 +1041,42 @@ do_action:	/* This label is used only to access EOF actions. */
 case 1:
 /* rule 1 can match eol */
 YY_RULE_SETUP
-#line 69 "scripts/genksyms/lex.l"
+#line 71 "scripts/genksyms/lex.l"
 return FILENAME;
 	YY_BREAK
 case 2:
 /* rule 2 can match eol */
 YY_RULE_SETUP
-#line 70 "scripts/genksyms/lex.l"
+#line 72 "scripts/genksyms/lex.l"
 cur_line++;
 	YY_BREAK
 case 3:
 /* rule 3 can match eol */
 YY_RULE_SETUP
-#line 71 "scripts/genksyms/lex.l"
+#line 73 "scripts/genksyms/lex.l"
 cur_line++;
 	YY_BREAK
 /* Ignore all other whitespace.  */
 case 4:
 YY_RULE_SETUP
-#line 74 "scripts/genksyms/lex.l"
+#line 76 "scripts/genksyms/lex.l"
 ;
 	YY_BREAK
 case 5:
 /* rule 5 can match eol */
 YY_RULE_SETUP
-#line 77 "scripts/genksyms/lex.l"
+#line 79 "scripts/genksyms/lex.l"
 return STRING;
 	YY_BREAK
 case 6:
 /* rule 6 can match eol */
 YY_RULE_SETUP
-#line 78 "scripts/genksyms/lex.l"
+#line 80 "scripts/genksyms/lex.l"
 return CHAR;
 	YY_BREAK
 case 7:
 YY_RULE_SETUP
-#line 79 "scripts/genksyms/lex.l"
+#line 81 "scripts/genksyms/lex.l"
 return IDENT;
 	YY_BREAK
 /* The Pedant requires that the other C multi-character tokens be
@@ -1048,36 +1085,36 @@ return IDENT;
     around them properly.  */
 case 8:
 YY_RULE_SETUP
-#line 85 "scripts/genksyms/lex.l"
+#line 87 "scripts/genksyms/lex.l"
 return OTHER;
 	YY_BREAK
 case 9:
 YY_RULE_SETUP
-#line 86 "scripts/genksyms/lex.l"
+#line 88 "scripts/genksyms/lex.l"
 return INT;
 	YY_BREAK
 case 10:
 YY_RULE_SETUP
-#line 87 "scripts/genksyms/lex.l"
+#line 89 "scripts/genksyms/lex.l"
 return REAL;
 	YY_BREAK
 case 11:
 YY_RULE_SETUP
-#line 89 "scripts/genksyms/lex.l"
+#line 91 "scripts/genksyms/lex.l"
 return DOTS;
 	YY_BREAK
 /* All other tokens are single characters.  */
 case 12:
 YY_RULE_SETUP
-#line 92 "scripts/genksyms/lex.l"
+#line 94 "scripts/genksyms/lex.l"
 return yytext[0];
 	YY_BREAK
 case 13:
 YY_RULE_SETUP
-#line 95 "scripts/genksyms/lex.l"
+#line 97 "scripts/genksyms/lex.l"
 ECHO;
 	YY_BREAK
-#line 1081 "scripts/genksyms/lex.c"
+#line 1118 "scripts/genksyms/lex.c"
 case YY_STATE_EOF(INITIAL):
 case YY_STATE_EOF(V2_TOKENS):
 	yyterminate();
@@ -1346,6 +1383,14 @@ static int yy_get_next_buffer (void)
 	else
 		ret_val = EOB_ACT_CONTINUE_SCAN;
 
+	if ((yy_size_t) ((yy_n_chars) + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
+		/* Extend the array by 50%, plus the number we really need. */
+		yy_size_t new_size = (yy_n_chars) + number_to_move + ((yy_n_chars) >> 1);
+		YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc((void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf,new_size  );
+		if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
+			YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
+	}
+
 	(yy_n_chars) += number_to_move;
 	YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] = YY_END_OF_BUFFER_CHAR;
 	YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] = YY_END_OF_BUFFER_CHAR;
@@ -1851,6 +1896,8 @@ static void yyensure_buffer_stack (void)
 		(yy_buffer_stack) = (struct yy_buffer_state**)yyalloc
 								(num_to_alloc * sizeof(struct yy_buffer_state*)
 								);
+		if ( ! (yy_buffer_stack) )
+			YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
 								  
 		memset((yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*));
 				
@@ -1869,6 +1916,8 @@ static void yyensure_buffer_stack (void)
 								((yy_buffer_stack),
 								num_to_alloc * sizeof(struct yy_buffer_state*)
 								);
+		if ( ! (yy_buffer_stack) )
+			YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );
 
 		/* zero only the new slots.*/
 		memset((yy_buffer_stack) + (yy_buffer_stack_max), 0, grow_size * sizeof(struct yy_buffer_state*));
@@ -2092,7 +2141,7 @@ void yyset_debug (int  bdebug )
 /* %if-reentrant */
 /* %if-bison-bridge */
 /* %endif */
-/* %endif */
+/* %endif if-c-only */
 
 /* %if-c-only */
 static int yy_init_globals (void)
@@ -2124,13 +2173,9 @@ static int yy_init_globals (void)
 }
 /* %endif */
 
-/* %if-c-or-c++ */
-/* %if-c-only */
+/* %if-c-only SNIP! this currently causes conflicts with the c++ scanner */
 /* yylex_destroy is for both reentrant and non-reentrant scanners. */
 int yylex_destroy  (void)
-/* %endif */
-/* %if-c++-only */
-/* %endif */
 {
     
     /* Pop the buffer stack, destroying each element. */
@@ -2144,11 +2189,6 @@ int yylex_destroy  (void)
 	yyfree((yy_buffer_stack) );
 	(yy_buffer_stack) = NULL;
 
-/* %if-c++-only */
-/* %endif */
-
-/* %if-c-only */
-
     /* Reset the globals. This is important in a non-reentrant scanner so the next time
      * yylex() is called, initialization will occur. */
     yy_init_globals( );
@@ -2156,7 +2196,6 @@ int yylex_destroy  (void)
 /* %if-reentrant */
 /* %endif */
     return 0;
-/* %endif */
 }
 /* %endif */
 
@@ -2213,7 +2252,7 @@ void yyfree (void * ptr )
 
 /* %ok-for-header */
 
-#line 95 "scripts/genksyms/lex.l"
+#line 97 "scripts/genksyms/lex.l"
 
 
 

scripts/genksyms/lex.l

@@ -62,6 +62,8 @@ MC_TOKEN		([~%^&*+=|<>/-]=)|(&&)|("||")|(->)|(<<)|(>>)
 /* We don't do multiple input files.  */
 %option noyywrap
 
+%option noinput
+
 %%