--- /dev/null
+/* Check calls to formatted I/O functions (-Wformat).
+ Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+ 2001, 2002, 2003, 2004, 2007, 2008 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_C_FORMAT_H
+#define GCC_C_FORMAT_H
+
+/* The meaningfully distinct length modifiers for format checking recognized
+ by GCC. */
+enum format_lengths
+{
+ FMT_LEN_none,
+ FMT_LEN_hh,
+ FMT_LEN_h,
+ FMT_LEN_l,
+ FMT_LEN_ll,
+ FMT_LEN_L,
+ FMT_LEN_z,
+ FMT_LEN_t,
+ FMT_LEN_j,
+ FMT_LEN_H,
+ FMT_LEN_D,
+ FMT_LEN_DD,
+ FMT_LEN_MAX
+};
+
+
+/* The standard versions in which various format features appeared. */
+enum format_std_version
+{
+ STD_C89,
+ STD_C94,
+ STD_C9L, /* C99, but treat as C89 if -Wno-long-long. */
+ STD_C99,
+ STD_EXT
+};
+
+/* Flags that may apply to a particular kind of format checked by GCC. */
+enum
+{
+ /* This format converts arguments of types determined by the
+ format string. */
+ FMT_FLAG_ARG_CONVERT = 1,
+ /* The scanf allocation 'a' kludge applies to this format kind. */
+ FMT_FLAG_SCANF_A_KLUDGE = 2,
+ /* A % during parsing a specifier is allowed to be a modified % rather
+ that indicating the format is broken and we are out-of-sync. */
+ FMT_FLAG_FANCY_PERCENT_OK = 4,
+ /* With $ operand numbers, it is OK to reference the same argument more
+ than once. */
+ FMT_FLAG_DOLLAR_MULTIPLE = 8,
+ /* This format type uses $ operand numbers (strfmon doesn't). */
+ FMT_FLAG_USE_DOLLAR = 16,
+ /* Zero width is bad in this type of format (scanf). */
+ FMT_FLAG_ZERO_WIDTH_BAD = 32,
+ /* Empty precision specification is OK in this type of format (printf). */
+ FMT_FLAG_EMPTY_PREC_OK = 64,
+ /* Gaps are allowed in the arguments with $ operand numbers if all
+ arguments are pointers (scanf). */
+ FMT_FLAG_DOLLAR_GAP_POINTER_OK = 128
+ /* Not included here: details of whether width or precision may occur
+ (controlled by width_char and precision_char); details of whether
+ '*' can be used for these (width_type and precision_type); details
+ of whether length modifiers can occur (length_char_specs). */
+};
+
+/* Structure describing a length modifier supported in format checking, and
+ possibly a doubled version such as "hh". */
+typedef struct
+{
+ /* Name of the single-character length modifier. If prefixed by
+ a zero character, it describes a multi character length
+ modifier, like I64, I32, etc. */
+ const char *name;
+ /* Index into a format_char_info.types array. */
+ enum format_lengths index;
+ /* Standard version this length appears in. */
+ enum format_std_version std;
+ /* Same, if the modifier can be repeated, or NULL if it can't. */
+ const char *double_name;
+ enum format_lengths double_index;
+ enum format_std_version double_std;
+} format_length_info;
+
+
+/* Structure describing the combination of a conversion specifier
+ (or a set of specifiers which act identically) and a length modifier. */
+typedef struct
+{
+ /* The standard version this combination of length and type appeared in.
+ This is only relevant if greater than those for length and type
+ individually; otherwise it is ignored. */
+ enum format_std_version std;
+ /* The name to use for the type, if different from that generated internally
+ (e.g., "signed size_t"). */
+ const char *name;
+ /* The type itself. */
+ tree *type;
+} format_type_detail;
+
+
+/* Macros to fill out tables of these. */
+#define NOARGUMENTS { T89_V, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }
+#define BADLEN { STD_C89, NULL, NULL }
+#define NOLENGTHS { BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }
+
+
+/* Structure describing a format conversion specifier (or a set of specifiers
+ which act identically), and the length modifiers used with it. */
+typedef struct format_char_info
+{
+ const char *format_chars;
+ int pointer_count;
+ enum format_std_version std;
+ /* Types accepted for each length modifier. */
+ format_type_detail types[FMT_LEN_MAX];
+ /* List of other modifier characters allowed with these specifiers.
+ This lists flags, and additionally "w" for width, "p" for precision
+ (right precision, for strfmon), "#" for left precision (strfmon),
+ "a" for scanf "a" allocation extension (not applicable in C99 mode),
+ "*" for scanf suppression, and "E" and "O" for those strftime
+ modifiers. */
+ const char *flag_chars;
+ /* List of additional flags describing these conversion specifiers.
+ "c" for generic character pointers being allowed, "2" for strftime
+ two digit year formats, "3" for strftime formats giving two digit
+ years in some locales, "4" for "2" which becomes "3" with an "E" modifier,
+ "o" if use of strftime "O" is a GNU extension beyond C99,
+ "W" if the argument is a pointer which is dereferenced and written into,
+ "R" if the argument is a pointer which is dereferenced and read from,
+ "i" for printf integer formats where the '0' flag is ignored with
+ precision, and "[" for the starting character of a scanf scanset. */
+ const char *flags2;
+ /* If this format conversion character consumes more than one argument,
+ CHAIN points to information about the next argument. For later
+ arguments, only POINTER_COUNT, TYPES, and the "c", "R", and "W" flags
+ in FLAGS2 are used. */
+ const struct format_char_info *chain;
+} format_char_info;
+
+
+/* Structure describing a flag accepted by some kind of format. */
+typedef struct
+{
+ /* The flag character in question (0 for end of array). */
+ int flag_char;
+ /* Zero if this entry describes the flag character in general, or a
+ nonzero character that may be found in flags2 if it describes the
+ flag when used with certain formats only. If the latter, only
+ the first such entry found that applies to the current conversion
+ specifier is used; the values of 'name' and 'long_name' it supplies
+ will be used, if non-NULL and the standard version is higher than
+ the unpredicated one, for any pedantic warning. For example, 'o'
+ for strftime formats (meaning 'O' is an extension over C99). */
+ int predicate;
+ /* Nonzero if the next character after this flag in the format should
+ be skipped ('=' in strfmon), zero otherwise. */
+ int skip_next_char;
+ /* The name to use for this flag in diagnostic messages. For example,
+ N_("'0' flag"), N_("field width"). */
+ const char *name;
+ /* Long name for this flag in diagnostic messages; currently only used for
+ "ISO C does not support ...". For example, N_("the 'I' printf flag"). */
+ const char *long_name;
+ /* The standard version in which it appeared. */
+ enum format_std_version std;
+} format_flag_spec;
+
+
+/* Structure describing a combination of flags that is bad for some kind
+ of format. */
+typedef struct
+{
+ /* The first flag character in question (0 for end of array). */
+ int flag_char1;
+ /* The second flag character. */
+ int flag_char2;
+ /* Nonzero if the message should say that the first flag is ignored with
+ the second, zero if the combination should simply be objected to. */
+ int ignored;
+ /* Zero if this entry applies whenever this flag combination occurs,
+ a nonzero character from flags2 if it only applies in some
+ circumstances (e.g. 'i' for printf formats ignoring 0 with precision). */
+ int predicate;
+} format_flag_pair;
+
+
+/* Structure describing a particular kind of format processed by GCC. */
+typedef struct
+{
+ /* The name of this kind of format, for use in diagnostics. Also
+ the name of the attribute (without preceding and following __). */
+ const char *name;
+ /* Specifications of the length modifiers accepted; possibly NULL. */
+ const format_length_info *length_char_specs;
+ /* Details of the conversion specification characters accepted. */
+ const format_char_info *conversion_specs;
+ /* String listing the flag characters that are accepted. */
+ const char *flag_chars;
+ /* String listing modifier characters (strftime) accepted. May be NULL. */
+ const char *modifier_chars;
+ /* Details of the flag characters, including pseudo-flags. */
+ const format_flag_spec *flag_specs;
+ /* Details of bad combinations of flags. */
+ const format_flag_pair *bad_flag_pairs;
+ /* Flags applicable to this kind of format. */
+ int flags;
+ /* Flag character to treat a width as, or 0 if width not used. */
+ int width_char;
+ /* Flag character to treat a left precision (strfmon) as,
+ or 0 if left precision not used. */
+ int left_precision_char;
+ /* Flag character to treat a precision (for strfmon, right precision) as,
+ or 0 if precision not used. */
+ int precision_char;
+ /* If a flag character has the effect of suppressing the conversion of
+ an argument ('*' in scanf), that flag character, otherwise 0. */
+ int suppression_char;
+ /* Flag character to treat a length modifier as (ignored if length
+ modifiers not used). Need not be placed in flag_chars for conversion
+ specifiers, but is used to check for bad combinations such as length
+ modifier with assignment suppression in scanf. */
+ int length_code_char;
+ /* Assignment-allocation flag character ('m' in scanf), otherwise 0. */
+ int alloc_char;
+ /* Pointer to type of argument expected if '*' is used for a width,
+ or NULL if '*' not used for widths. */
+ tree *width_type;
+ /* Pointer to type of argument expected if '*' is used for a precision,
+ or NULL if '*' not used for precisions. */
+ tree *precision_type;
+} format_kind_info;
+
+#define T_I &integer_type_node
+#define T89_I { STD_C89, NULL, T_I }
+#define T_L &long_integer_type_node
+#define T89_L { STD_C89, NULL, T_L }
+#define T_LL &long_long_integer_type_node
+#define T9L_LL { STD_C9L, NULL, T_LL }
+#define TEX_LL { STD_EXT, NULL, T_LL }
+#define T_S &short_integer_type_node
+#define T89_S { STD_C89, NULL, T_S }
+#define T_UI &unsigned_type_node
+#define T89_UI { STD_C89, NULL, T_UI }
+#define T_UL &long_unsigned_type_node
+#define T89_UL { STD_C89, NULL, T_UL }
+#define T_ULL &long_long_unsigned_type_node
+#define T9L_ULL { STD_C9L, NULL, T_ULL }
+#define TEX_ULL { STD_EXT, NULL, T_ULL }
+#define T_US &short_unsigned_type_node
+#define T89_US { STD_C89, NULL, T_US }
+#define T_F &float_type_node
+#define T89_F { STD_C89, NULL, T_F }
+#define T99_F { STD_C99, NULL, T_F }
+#define T_D &double_type_node
+#define T89_D { STD_C89, NULL, T_D }
+#define T99_D { STD_C99, NULL, T_D }
+#define T_LD &long_double_type_node
+#define T89_LD { STD_C89, NULL, T_LD }
+#define T99_LD { STD_C99, NULL, T_LD }
+#define T_C &char_type_node
+#define T89_C { STD_C89, NULL, T_C }
+#define T_SC &signed_char_type_node
+#define T99_SC { STD_C99, NULL, T_SC }
+#define T_UC &unsigned_char_type_node
+#define T99_UC { STD_C99, NULL, T_UC }
+#define T_V &void_type_node
+#define T89_V { STD_C89, NULL, T_V }
+#define T_W &wchar_type_node
+#define T94_W { STD_C94, "wchar_t", T_W }
+#define TEX_W { STD_EXT, "wchar_t", T_W }
+#define T_WI &wint_type_node
+#define T94_WI { STD_C94, "wint_t", T_WI }
+#define TEX_WI { STD_EXT, "wint_t", T_WI }
+#define T_ST &size_type_node
+#define T99_ST { STD_C99, "size_t", T_ST }
+#define T_SST &signed_size_type_node
+#define T99_SST { STD_C99, "signed size_t", T_SST }
+#define T_PD &ptrdiff_type_node
+#define T99_PD { STD_C99, "ptrdiff_t", T_PD }
+#define T_UPD &unsigned_ptrdiff_type_node
+#define T99_UPD { STD_C99, "unsigned ptrdiff_t", T_UPD }
+#define T_IM &intmax_type_node
+#define T99_IM { STD_C99, "intmax_t", T_IM }
+#define T_UIM &uintmax_type_node
+#define T99_UIM { STD_C99, "uintmax_t", T_UIM }
+#define T_D32 &dfloat32_type_node
+#define TEX_D32 { STD_EXT, "_Decimal32", T_D32 }
+#define T_D64 &dfloat64_type_node
+#define TEX_D64 { STD_EXT, "_Decimal64", T_D64 }
+#define T_D128 &dfloat128_type_node
+#define TEX_D128 { STD_EXT, "_Decimal128", T_D128 }
+
+/* Structure describing how format attributes such as "printf" are
+ interpreted as "gnu_printf" or "ms_printf" on a particular system.
+ TARGET_OVERRIDES_FORMAT_ATTRIBUTES is used to specify target-specific
+ defaults. */
+typedef struct
+{
+ /* The name of the to be copied format attribute. */
+ const char *named_attr_src;
+ /* The name of the to be overridden format attribute. */
+ const char *named_attr_dst;
+} target_ovr_attr;
+
+#endif /* GCC_C_FORMAT_H */
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