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1b26a2abec
freebsd-ports/lang/egcs/files/patch-fa
David E. O'Brien 6a9f6dc39f Add FreeBSD's ``-fformat-extensions''. Taken from 4.0-CURRENT, this allows 
2.x/3.x people to compile kernels and world with EGCS.
1999-03-30 18:15:39 +00:00

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--- gcc/c-common.c.orig Mon Feb 15 16:40:05 1999
+++ gcc/c-common.c Tue Mar 30 03:35:22 1999
@@ -61,7 +61,7 @@
int, int, int));
static void init_attributes PROTO((void));
static void record_function_format PROTO((tree, tree, enum format_type,
- int, int));
+ int, int, int));
static void record_international_format PROTO((tree, tree, int));
/* Keep a stack of if statements. We record the number of compound
@@ -669,6 +669,7 @@
= TREE_VALUE (TREE_CHAIN (TREE_CHAIN (args)));
int format_num;
int first_arg_num;
+ int null_format_ok;
enum format_type format_type;
tree argument;
int arg_num;
@@ -682,7 +683,7 @@
if (TREE_CODE (format_type_id) != IDENTIFIER_NODE)
{
- error ("unrecognized format specifier");
+ error_with_decl (decl, "unrecognized format specifier");
continue;
}
else
@@ -690,12 +691,26 @@
char *p = IDENTIFIER_POINTER (format_type_id);
if (!strcmp (p, "printf") || !strcmp (p, "__printf__"))
+ {
+ format_type = printf_format_type;
+ null_format_ok = 0;
+ }
+ else if (!strcmp (p, "printf0") || !strcmp (p, "__printf0__"))
+ {
format_type = printf_format_type;
+ null_format_ok = 1;
+ }
else if (!strcmp (p, "scanf") || !strcmp (p, "__scanf__"))
+ {
format_type = scanf_format_type;
+ null_format_ok = 0;
+ }
else if (!strcmp (p, "strftime")
|| !strcmp (p, "__strftime__"))
+ {
format_type = strftime_format_type;
+ null_format_ok = 0;
+ }
else
{
error ("`%s' is an unrecognized format function type", p);
@@ -766,7 +781,8 @@
record_function_format (DECL_NAME (decl),
DECL_ASSEMBLER_NAME (decl),
- format_type, format_num, first_arg_num);
+ format_type, null_format_ok, format_num,
+ first_arg_num);
break;
}
@@ -1010,6 +1026,11 @@
} format_char_info;
static format_char_info print_char_table[] = {
+/* FreeBSD kernel extensions. */
+ { "D", 1, T_C, T_C, NULL, NULL, NULL, NULL, NULL, "-wp" },
+ { "b", 1, T_C, T_C, NULL, NULL, NULL, NULL, NULL, "-wp" },
+ { "rz", 0, NULL, T_I, T_I, T_L, NULL, NULL, NULL, "-wp0 +#" },
+#define unextended_print_char_table (print_char_table + 3)
{ "di", 0, T_I, T_I, T_I, T_L, T_LL, T_LL, T_ST, "-wp0 +" },
{ "oxX", 0, T_UI, T_UI, T_UI, T_UL, T_ULL, T_ULL, T_ST, "-wp0#" },
{ "u", 0, T_UI, T_UI, T_UI, T_UL, T_ULL, T_ULL, T_ST, "-wp0" },
@@ -1070,6 +1091,7 @@
tree name; /* identifier such as "printf" */
tree assembler_name; /* optional mangled identifier (for C++) */
enum format_type format_type; /* type of format (printf, scanf, etc.) */
+ int null_format_ok; /* TRUE if the format string may be NULL */
int format_num; /* number of format argument */
int first_arg_num; /* number of first arg (zero for varargs) */
} function_format_info;
@@ -1102,25 +1124,25 @@
init_function_format_info ()
{
record_function_format (get_identifier ("printf"), NULL_TREE,
- printf_format_type, 1, 2);
+ printf_format_type, 0, 1, 2);
record_function_format (get_identifier ("fprintf"), NULL_TREE,
- printf_format_type, 2, 3);
+ printf_format_type, 0, 2, 3);
record_function_format (get_identifier ("sprintf"), NULL_TREE,
- printf_format_type, 2, 3);
+ printf_format_type, 0, 2, 3);
record_function_format (get_identifier ("scanf"), NULL_TREE,
- scanf_format_type, 1, 2);
+ scanf_format_type, 0, 1, 2);
record_function_format (get_identifier ("fscanf"), NULL_TREE,
- scanf_format_type, 2, 3);
+ scanf_format_type, 0, 2, 3);
record_function_format (get_identifier ("sscanf"), NULL_TREE,
- scanf_format_type, 2, 3);
+ scanf_format_type, 0, 2, 3);
record_function_format (get_identifier ("vprintf"), NULL_TREE,
- printf_format_type, 1, 0);
+ printf_format_type, 0, 1, 0);
record_function_format (get_identifier ("vfprintf"), NULL_TREE,
- printf_format_type, 2, 0);
+ printf_format_type, 0, 2, 0);
record_function_format (get_identifier ("vsprintf"), NULL_TREE,
- printf_format_type, 2, 0);
+ printf_format_type, 0, 2, 0);
record_function_format (get_identifier ("strftime"), NULL_TREE,
- strftime_format_type, 3, 0);
+ strftime_format_type, 0, 3, 0);
record_international_format (get_identifier ("gettext"), NULL_TREE, 1);
record_international_format (get_identifier ("dgettext"), NULL_TREE, 2);
@@ -1137,11 +1159,12 @@
(e.g. for varargs such as vfprintf). */
static void
-record_function_format (name, assembler_name, format_type,
+record_function_format (name, assembler_name, format_type, null_format_ok,
format_num, first_arg_num)
tree name;
tree assembler_name;
enum format_type format_type;
+ int null_format_ok;
int format_num;
int first_arg_num;
{
@@ -1165,6 +1188,7 @@
}
info->format_type = format_type;
+ info->null_format_ok = null_format_ok;
info->format_num = format_num;
info->first_arg_num = first_arg_num;
}
@@ -1314,7 +1338,8 @@
if (integer_zerop (format_tree))
{
- warning ("null format string");
+ if (!info->null_format_ok)
+ warning ("null format string");
return;
}
if (TREE_CODE (format_tree) != ADDR_EXPR)
@@ -1485,12 +1510,13 @@
It will work on most machines, because size_t and int
have the same mode. But might as well warn anyway,
since it will fail on other machines. */
+ /* XXX should we allow unsigned ints here? */
if ((TYPE_MAIN_VARIANT (TREE_TYPE (cur_param))
!= integer_type_node)
&&
(TYPE_MAIN_VARIANT (TREE_TYPE (cur_param))
!= unsigned_type_node))
- warning ("field width is not type int (arg %d)", arg_num);
+ warning ("precision is not type int (arg %d)", arg_num);
}
}
else
@@ -1535,6 +1561,53 @@
}
}
}
+ if (*format_chars == 'b')
+ {
+ /* There should be an int arg to control the string arg. */
+ if (params == 0)
+ {
+ warning (tfaff);
+ 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))
+ {
+ warning ("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)
+ {
+ warning (tfaff);
+ return;
+ }
+ if (info->first_arg_num != 0)
+ {
+ 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)
+ {
+ warning ("ethernet address is not type unsigned char *"
+ " (arg %d)",
+ arg_num);
+ }
+ }
+ }
aflag = 0;
@@ -1604,7 +1677,8 @@
switch (info->format_type)
{
case printf_format_type:
- fci = print_char_table;
+ fci = flag_format_extensions ? print_char_table
+ : unextended_print_char_table;
break;
case scanf_format_type:
fci = scan_char_table;
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