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--- gcc/c-format.c.orig Sun Nov 25 10:54:11 2001
+++ gcc/c-format.c Sat Feb 2 19:04:24 2002
@@ -82,12 +82,15 @@
enum format_type format_type; /* type of format (printf, scanf, etc.) */
unsigned HOST_WIDE_INT format_num; /* number of format argument */
unsigned HOST_WIDE_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 bool decode_format_attr PARAMS ((tree,
function_format_info *, int));
static enum format_type decode_format_type PARAMS ((const char *));
+/* inline static int get_null_fmt_ok PARAMS ((enum format_type)); */
+
/* Handle a "format" attribute; arguments as in
struct attribute_spec.handler. */
tree
@@ -97,6 +100,7 @@
tree args;
int flags;
bool *no_add_attrs;
+ /* int null_format_ok; */
{
tree type = *node;
function_format_info info;
@@ -257,6 +261,7 @@
const char *p = IDENTIFIER_POINTER (format_type_id);
info->format_type = decode_format_type (p);
+ /* info->null_format_ok = get_null_fmt_ok (format_type); */
if (info->format_type == format_type_error)
{
@@ -292,6 +297,7 @@
info->format_num = TREE_INT_CST_LOW (format_num_expr);
info->first_arg_num = TREE_INT_CST_LOW (first_arg_num_expr);
+ /* info->null_format_ok = TREE_INT_CST_LOW (null_format_ok); */
if (info->first_arg_num != 0 && info->first_arg_num <= info->format_num)
{
if (validated_p)
@@ -540,6 +546,8 @@
/* Pointer to type of argument expected if '*' is used for a precision,
or NULL if '*' not used for precisions. */
tree *const precision_type;
+ /* Needed for FreeBSD kernel and the printf0() printf-like function. */
+ /* int null_format_ok; */
} format_kind_info;
@@ -765,6 +773,20 @@
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" },
@@ -848,23 +870,36 @@
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|FMT_FLAG_DOLLAR_GAP_POINTER_OK,
'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
+ },
+ */
};
@@ -917,6 +952,16 @@
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. */
@@ -1475,7 +1520,7 @@
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). */
@@ -1710,6 +1755,54 @@
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
@@ -2113,7 +2206,7 @@
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);
|
