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|
--- gcc/c-format.c.orig Sat Jan 13 15:29:57 2001
+++ gcc/c-format.c Wed Feb 14 03:47:34 2001
@@ -75,13 +75,16 @@
last. */
enum format_type { printf_format_type, scanf_format_type,
strftime_format_type, strfmon_format_type,
+ printf0_format_type,
format_type_error };
static enum format_type decode_format_type PARAMS ((const char *));
static void record_function_format PARAMS ((tree, tree, enum format_type,
- int, int));
+ int, int, int));
static void record_international_format PARAMS ((tree, tree, int));
+inline static int get_null_fmt_ok PARAMS ((enum format_type));
+
/* Handle the format attribute (with arguments ARGS) attached to the decl
DECL. It is already verified that DECL is a decl and ARGS contains
exactly three arguments. */
@@ -99,6 +102,7 @@
enum format_type format_type;
tree argument;
unsigned int arg_num;
+ int null_format_ok;
if (TREE_CODE (decl) != FUNCTION_DECL)
{
@@ -109,7 +113,7 @@
if (TREE_CODE (format_type_id) != IDENTIFIER_NODE)
{
- error ("unrecognized format specifier");
+ error_with_decl (decl, "unrecognized format specifier");
return;
}
else
@@ -117,6 +121,7 @@
const char *p = IDENTIFIER_POINTER (format_type_id);
format_type = decode_format_type (p);
+ null_format_ok = get_null_fmt_ok (format_type);
if (format_type == format_type_error)
{
@@ -195,7 +200,8 @@
}
record_function_format (DECL_NAME (decl), DECL_ASSEMBLER_NAME (decl),
- format_type, format_num, first_arg_num);
+ format_type, format_num, first_arg_num,
+ null_format_ok);
}
@@ -276,6 +282,7 @@
enum format_type format_type; /* type of format (printf, scanf, etc.) */
int format_num; /* number of format argument */
int first_arg_num; /* number of first arg (zero for varargs) */
+ int null_format_ok; /* TRUE if the format string may be NULL */
} function_format_info;
static function_format_info *function_format_list = NULL;
@@ -309,44 +316,44 @@
{
/* Functions from ISO/IEC 9899:1990. */
record_function_format (get_identifier ("printf"), NULL_TREE,
- printf_format_type, 1, 2);
+ printf_format_type, 1, 2, 0);
record_function_format (get_identifier ("__builtin_printf"), NULL_TREE,
- printf_format_type, 1, 2);
+ printf_format_type, 1, 2, 0);
record_function_format (get_identifier ("fprintf"), NULL_TREE,
- printf_format_type, 2, 3);
+ printf_format_type, 2, 3, 0);
record_function_format (get_identifier ("__builtin_fprintf"), NULL_TREE,
- printf_format_type, 2, 3);
+ printf_format_type, 2, 3, 0);
record_function_format (get_identifier ("sprintf"), NULL_TREE,
- printf_format_type, 2, 3);
+ printf_format_type, 2, 3, 0);
record_function_format (get_identifier ("scanf"), NULL_TREE,
- scanf_format_type, 1, 2);
+ scanf_format_type, 1, 2, 0);
record_function_format (get_identifier ("fscanf"), NULL_TREE,
- scanf_format_type, 2, 3);
+ scanf_format_type, 2, 3, 0);
record_function_format (get_identifier ("sscanf"), NULL_TREE,
- scanf_format_type, 2, 3);
+ scanf_format_type, 2, 3, 0);
record_function_format (get_identifier ("vprintf"), NULL_TREE,
- printf_format_type, 1, 0);
+ printf_format_type, 1, 0, 0);
record_function_format (get_identifier ("vfprintf"), NULL_TREE,
- printf_format_type, 2, 0);
+ printf_format_type, 2, 0, 0);
record_function_format (get_identifier ("vsprintf"), NULL_TREE,
- printf_format_type, 2, 0);
+ printf_format_type, 2, 0, 0);
record_function_format (get_identifier ("strftime"), NULL_TREE,
- strftime_format_type, 3, 0);
+ strftime_format_type, 3, 0, 0);
}
if (flag_hosted && flag_isoc99)
{
/* ISO C99 adds the snprintf and vscanf family functions. */
record_function_format (get_identifier ("snprintf"), NULL_TREE,
- printf_format_type, 3, 4);
+ printf_format_type, 3, 4, 0);
record_function_format (get_identifier ("vsnprintf"), NULL_TREE,
- printf_format_type, 3, 0);
+ printf_format_type, 3, 0, 0);
record_function_format (get_identifier ("vscanf"), NULL_TREE,
- scanf_format_type, 1, 0);
+ scanf_format_type, 1, 0, 0);
record_function_format (get_identifier ("vfscanf"), NULL_TREE,
- scanf_format_type, 2, 0);
+ scanf_format_type, 2, 0, 0);
record_function_format (get_identifier ("vsscanf"), NULL_TREE,
- scanf_format_type, 2, 0);
+ scanf_format_type, 2, 0, 0);
}
if (flag_hosted && flag_noniso_default_format_attributes)
@@ -357,7 +364,7 @@
record_international_format (get_identifier ("dcgettext"), NULL_TREE, 2);
/* X/Open strfmon function. */
record_function_format (get_identifier ("strfmon"), NULL_TREE,
- strfmon_format_type, 3, 4);
+ strfmon_format_type, 3, 4, 0);
}
}
@@ -372,12 +379,13 @@
static void
record_function_format (name, assembler_name, format_type,
- format_num, first_arg_num)
+ format_num, first_arg_num, null_format_ok)
tree name;
tree assembler_name;
enum format_type format_type;
int format_num;
int first_arg_num;
+ int null_format_ok;
{
function_format_info *info;
@@ -401,6 +409,7 @@
info->format_type = format_type;
info->format_num = format_num;
info->first_arg_num = first_arg_num;
+ info->null_format_ok = null_format_ok;
}
/* Record information for the names of function that modify the format
@@ -677,6 +686,8 @@
/* Pointer to type of argument expected if '*' is used for a precision,
or NULL if '*' not used for precisions. */
tree *precision_type;
+ /* Needed for FreeBSD kernel and the printf0() printf-like function. */
+ int null_format_ok;
} format_kind_info;
@@ -902,6 +913,20 @@
static const format_char_info print_char_table[] =
{
+#warning The FreeBSD kernel extensions in print_char_table might not be done correctly.
+/* FreeBSD kernel extensions (src/sys/kern/subr_prf.c). */
+/* The format %b is supported to decode error registers.
+ Its usage is: printf("reg=%b\n", regval, "<base><arg>*");
+ which produces: reg=3<BITTWO,BITONE>
+ The format %D provides a hexdump given a pointer and separator string:
+ ("%6D", ptr, ":") -> XX:XX:XX:XX:XX:XX
+ ("%*D", len, ptr, " ") -> XX XX XX XX ...
+ */
+ { "D", 1, STD_EXT, { T89_C, T89_C, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp", "c" },
+ { "b", 1, STD_EXT, { T89_C, T89_C, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp", "" },
+ { "rz", 0, STD_EXT, { BADLEN, T89_I, T89_I, T89_L, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp0 +#", "i" },
+#define unextended_print_char_table (print_char_table + 3)
+#warning The FreeBSD kernel extensions in print_char_table might not be done correctly.
/* C89 conversion specifiers. */
{ "di", 0, STD_C89, { T89_I, T99_SC, T89_S, T89_L, T9L_LL, TEX_LL, T99_SST, T99_PD, T99_IM }, "-wp0 +'I", "i" },
{ "oxX", 0, STD_C89, { T89_UI, T99_UC, T89_US, T89_UL, T9L_ULL, TEX_ULL, T99_ST, T99_UPD, T99_UIM }, "-wp0#", "i" },
@@ -985,22 +1010,33 @@
FMT_FLAG_ARG_CONVERT|FMT_FLAG_DOLLAR_MULTIPLE|FMT_FLAG_USE_DOLLAR|FMT_FLAG_EMPTY_PREC_OK,
'w', 0, 'p', 0, 'L',
&integer_type_node, &integer_type_node
+ ,0
},
{ "scanf", scanf_length_specs, scan_char_table, "*'I", NULL,
scanf_flag_specs, scanf_flag_pairs,
FMT_FLAG_ARG_CONVERT|FMT_FLAG_SCANF_A_KLUDGE|FMT_FLAG_USE_DOLLAR|FMT_FLAG_ZERO_WIDTH_BAD,
'w', 0, 0, '*', 'L',
NULL, NULL
+ ,0
},
{ "strftime", NULL, time_char_table, "_-0^#", "EO",
strftime_flag_specs, strftime_flag_pairs,
FMT_FLAG_FANCY_PERCENT_OK, 'w', 0, 0, 0, 0,
NULL, NULL
+ ,0
},
{ "strfmon", strfmon_length_specs, monetary_char_table, "=^+(!-", NULL,
strfmon_flag_specs, strfmon_flag_pairs,
FMT_FLAG_ARG_CONVERT, 'w', '#', 'p', 0, 'L',
NULL, NULL
+ ,0
+ },
+ { "printf0", printf_length_specs, print_char_table, " +#0-'I", NULL,
+ printf_flag_specs, printf_flag_pairs,
+ FMT_FLAG_ARG_CONVERT|FMT_FLAG_DOLLAR_MULTIPLE|FMT_FLAG_USE_DOLLAR|FMT_FLAG_EMPTY_PREC_OK,
+ 'w', 0, 'p', 0, 'L',
+ &integer_type_node, &integer_type_node
+ ,1
}
};
@@ -1053,6 +1089,14 @@
static void check_format_types PARAMS ((int *, format_wanted_type *));
+
+inline static int get_null_fmt_ok (fmttype)
+ enum format_type fmttype;
+{
+ return format_types[(int)fmttype].null_format_ok;
+}
+
+
/* Decode a format type from a string, returning the type, or
format_type_error if not valid, in which case the caller should print an
error message. */
@@ -1568,7 +1612,7 @@
specially if info == NULL and add a res->number_null entry for
that case, or maybe add a function pointer to be called at
the end instead of hardcoding check_format_info_main. */
- status_warning (status, "null format string");
+ if (!info->null_format_ok) status_warning (status, "null format string");
/* Skip to first argument to check, so we can see if this format
has any arguments (it shouldn't). */
@@ -1764,6 +1808,54 @@
main_arg_num = opnum + info->first_arg_num - 1;
}
}
+ if (*format_chars == 'b')
+ {
+ /* There should be an int arg to control the string arg. */
+ if (params == 0)
+ {
+ status_warning (status, "too few arguments for format");
+ return;
+ }
+ if (info->first_arg_num != 0)
+ {
+ cur_param = TREE_VALUE (params);
+ params = TREE_CHAIN (params);
+ ++arg_num;
+ if ((TYPE_MAIN_VARIANT (TREE_TYPE (cur_param))
+ != integer_type_node)
+ &&
+ (TYPE_MAIN_VARIANT (TREE_TYPE (cur_param))
+ != unsigned_type_node))
+ {
+ status_warning (status, "bitmap is not type int (arg %d)", arg_num);
+ }
+ }
+ }
+ if (*format_chars == 'D')
+ {
+ /* There should be an unsigned char * arg before the string arg. */
+ if (params == 0)
+ {
+ status_warning (status, "too few arguments for format");
+ return;
+ }
+ if (info->first_arg_num != 0)
+ {
+ tree cur_type;
+ cur_param = TREE_VALUE (params);
+ params = TREE_CHAIN (params);
+ ++arg_num;
+ cur_type = TREE_TYPE (cur_param);
+ if (TREE_CODE (cur_type) != POINTER_TYPE
+ || TYPE_MAIN_VARIANT (TREE_TYPE (cur_type))
+ != unsigned_char_type_node)
+ {
+ status_warning (status,
+ "ethernet address is not type unsigned char * (arg %d)",
+ arg_num);
+ }
+ }
+ }
/* Read any format flags, but do not yet validate them beyond removing
duplicates, since in general validation depends on the rest of
@@ -2166,7 +2258,7 @@
else if (strchr (fci->flags2, '2') != 0)
y2k_level = 2;
if (y2k_level == 3)
- status_warning (status, "`%%%c' yields only last 2 digits of year in some locales",
+ status_warning (status, "`%%%c' yields only last 2 digits of year in some locales on non-BSD systems",
format_char);
else if (y2k_level == 2)
status_warning (status, "`%%%c' yields only last 2 digits of year", format_char);
|
