243 lines
8.4 KiB
Plaintext
243 lines
8.4 KiB
Plaintext
--- gcc/c-common.c.orig Thu Nov 16 22:05:12 2000
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+++ gcc/c-common.c Mon Nov 27 02:25:55 2000
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@@ -193,7 +193,7 @@
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int, int, int));
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static void init_attributes PARAMS ((void));
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static void record_function_format PARAMS ((tree, tree, enum format_type,
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- int, int));
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+ int, int, int));
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static void record_international_format PARAMS ((tree, tree, int));
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static int default_valid_lang_attribute PARAMS ((tree, tree, tree, tree));
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@@ -888,6 +888,7 @@
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enum format_type format_type;
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tree argument;
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unsigned int arg_num;
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+ int null_format_ok;
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if (TREE_CODE (decl) != FUNCTION_DECL)
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{
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@@ -898,7 +899,7 @@
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if (TREE_CODE (format_type_id) != IDENTIFIER_NODE)
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{
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- error ("unrecognized format specifier");
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+ error_with_decl (decl, "unrecognized format specifier");
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continue;
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}
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else
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@@ -906,12 +907,26 @@
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const char *p = IDENTIFIER_POINTER (format_type_id);
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if (!strcmp (p, "printf") || !strcmp (p, "__printf__"))
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+ {
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+ format_type = printf_format_type;
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+ null_format_ok = 0;
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+ }
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+ else if (!strcmp (p, "printf0") || !strcmp (p, "__printf0__"))
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+ {
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format_type = printf_format_type;
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+ null_format_ok = 1;
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+ }
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else if (!strcmp (p, "scanf") || !strcmp (p, "__scanf__"))
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+ {
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format_type = scanf_format_type;
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+ null_format_ok = 0;
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+ }
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else if (!strcmp (p, "strftime")
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|| !strcmp (p, "__strftime__"))
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+ {
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format_type = strftime_format_type;
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+ null_format_ok = 0;
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+ }
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else
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{
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warning ("`%s' is an unrecognized format function type", p);
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@@ -990,7 +1005,8 @@
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record_function_format (DECL_NAME (decl),
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DECL_ASSEMBLER_NAME (decl),
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- format_type, format_num, first_arg_num);
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+ format_type, format_num, first_arg_num,
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+ null_format_ok);
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break;
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}
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@@ -1654,6 +1670,13 @@
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static const format_char_info print_char_table[] =
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{
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+#ifdef XXX_NEED_TO_UPDATE_THIS_FOR_GCC297_CHANGES
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+/* FreeBSD kernel extensions. */
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+ { "D", 1, T_C, T_C, NULL, NULL, NULL, NULL, NULL, "-wp" },
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+ { "b", 1, T_C, T_C, NULL, NULL, NULL, NULL, NULL, "-wp" },
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+ { "rz", 0, NULL, T_I, T_I, T_L, NULL, NULL, NULL, "-wp0 +#" },
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+#define unextended_print_char_table (print_char_table + 3)
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+#endif
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/* C89 conversion specifiers. */
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{ "di", 0, STD_C89, { T89_I, T99_SC, T89_S, T89_L, T99_LL, TEX_LL, T99_SST, T99_PD, T99_IM }, "-wp0 +'I", "i" },
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{ "oxX", 0, STD_C89, { T89_UI, T99_UC, T89_US, T89_UL, T99_ULL, TEX_ULL, T99_ST, T99_UPD, T99_UIM }, "-wp0#", "i" },
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@@ -1752,6 +1775,7 @@
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enum format_type format_type; /* type of format (printf, scanf, etc.) */
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int format_num; /* number of format argument */
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int first_arg_num; /* number of first arg (zero for varargs) */
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+ int null_format_ok; /* TRUE if the format string may be NULL */
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} function_format_info;
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static function_format_info *function_format_list = NULL;
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@@ -1837,42 +1861,42 @@
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{
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/* Functions from ISO/IEC 9899:1990. */
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record_function_format (get_identifier ("printf"), NULL_TREE,
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- printf_format_type, 1, 2);
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+ printf_format_type, 1, 2, 0);
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record_function_format (get_identifier ("__builtin_printf"), NULL_TREE,
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- printf_format_type, 1, 2);
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+ printf_format_type, 1, 2, 0);
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record_function_format (get_identifier ("fprintf"), NULL_TREE,
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- printf_format_type, 2, 3);
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+ printf_format_type, 2, 3, 0);
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record_function_format (get_identifier ("sprintf"), NULL_TREE,
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- printf_format_type, 2, 3);
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+ printf_format_type, 2, 3, 0);
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record_function_format (get_identifier ("scanf"), NULL_TREE,
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- scanf_format_type, 1, 2);
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+ scanf_format_type, 1, 2, 0);
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record_function_format (get_identifier ("fscanf"), NULL_TREE,
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- scanf_format_type, 2, 3);
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+ scanf_format_type, 2, 3, 0);
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record_function_format (get_identifier ("sscanf"), NULL_TREE,
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- scanf_format_type, 2, 3);
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+ scanf_format_type, 2, 3, 0);
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record_function_format (get_identifier ("vprintf"), NULL_TREE,
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- printf_format_type, 1, 0);
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+ printf_format_type, 1, 0, 0);
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record_function_format (get_identifier ("vfprintf"), NULL_TREE,
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- printf_format_type, 2, 0);
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+ printf_format_type, 2, 0, 0);
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record_function_format (get_identifier ("vsprintf"), NULL_TREE,
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- printf_format_type, 2, 0);
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+ printf_format_type, 2, 0, 0);
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record_function_format (get_identifier ("strftime"), NULL_TREE,
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- strftime_format_type, 3, 0);
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+ strftime_format_type, 3, 0, 0);
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}
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if (flag_hosted && flag_isoc99)
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{
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/* ISO C99 adds the snprintf and vscanf family functions. */
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record_function_format (get_identifier ("snprintf"), NULL_TREE,
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- printf_format_type, 3, 4);
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+ printf_format_type, 3, 4, 0);
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record_function_format (get_identifier ("vsnprintf"), NULL_TREE,
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- printf_format_type, 3, 0);
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+ printf_format_type, 3, 0, 0);
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record_function_format (get_identifier ("vscanf"), NULL_TREE,
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- scanf_format_type, 1, 0);
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+ scanf_format_type, 1, 0, 0);
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record_function_format (get_identifier ("vfscanf"), NULL_TREE,
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- scanf_format_type, 2, 0);
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+ scanf_format_type, 2, 0, 0);
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record_function_format (get_identifier ("vsscanf"), NULL_TREE,
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- scanf_format_type, 2, 0);
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+ scanf_format_type, 2, 0, 0);
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}
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if (flag_hosted && flag_noniso_default_format_attributes)
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@@ -1895,12 +1919,13 @@
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static void
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record_function_format (name, assembler_name, format_type,
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- format_num, first_arg_num)
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+ format_num, first_arg_num, null_format_ok)
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tree name;
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tree assembler_name;
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enum format_type format_type;
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int format_num;
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int first_arg_num;
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+ int null_format_ok;
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{
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function_format_info *info;
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@@ -1924,6 +1949,7 @@
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info->format_type = format_type;
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info->format_num = format_num;
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info->first_arg_num = first_arg_num;
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+ info->null_format_ok = null_format_ok;
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}
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/* Record information for the names of function that modify the format
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@@ -2415,7 +2441,7 @@
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specially if info == NULL and add a res->number_null entry for
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that case, or maybe add a function pointer to be called at
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the end instead of hardcoding check_format_info_main. */
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- status_warning (status, "null format string");
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+ if (!info->null_format_ok) status_warning (status, "null format string");
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/* Skip to first argument to check, so we can see if this format
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has any arguments (it shouldn't). */
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@@ -2611,6 +2637,54 @@
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main_arg_num = opnum + info->first_arg_num - 1;
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}
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}
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+ if (*format_chars == 'b')
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+ {
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+ /* There should be an int arg to control the string arg. */
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+ if (params == 0)
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+ {
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+ status_warning (status, "too few arguments for format");
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+ return;
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+ }
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+ if (info->first_arg_num != 0)
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+ {
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+ cur_param = TREE_VALUE (params);
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+ params = TREE_CHAIN (params);
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+ ++arg_num;
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+ if ((TYPE_MAIN_VARIANT (TREE_TYPE (cur_param))
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+ != integer_type_node)
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+ &&
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+ (TYPE_MAIN_VARIANT (TREE_TYPE (cur_param))
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+ != unsigned_type_node))
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+ {
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+ status_warning (status, "bitmap is not type int (arg %d)", arg_num);
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+ }
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+ }
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+ }
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+ if (*format_chars == 'D')
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+ {
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+ /* There should be an unsigned char * arg before the string arg. */
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+ if (params == 0)
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+ {
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+ status_warning (status, "too few arguments for format");
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+ return;
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+ }
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+ if (info->first_arg_num != 0)
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+ {
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+ tree cur_type;
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+ cur_param = TREE_VALUE (params);
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+ params = TREE_CHAIN (params);
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+ ++arg_num;
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+ cur_type = TREE_TYPE (cur_param);
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+ if (TREE_CODE (cur_type) != POINTER_TYPE
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+ || TYPE_MAIN_VARIANT (TREE_TYPE (cur_type))
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+ != unsigned_char_type_node)
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+ {
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+ status_warning (status,
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+ "ethernet address is not type unsigned char * (arg %d)",
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+ arg_num);
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+ }
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+ }
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+ }
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/* Read any format flags, but do not yet validate them beyond removing
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duplicates, since in general validation depends on the rest of
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@@ -2984,7 +3058,7 @@
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else if (strchr (fci->flags2, '2') != 0)
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y2k_level = 2;
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if (y2k_level == 3)
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- status_warning (status, "`%%%c' yields only last 2 digits of year in some locales",
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+ status_warning (status, "`%%%c' yields only last 2 digits of year in some locales on non-BSD systems",
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format_char);
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else if (y2k_level == 2)
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status_warning (status, "`%%%c' yields only last 2 digits of year", format_char);
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