1/* Check calls to formatted I/O functions (-Wformat). 2 Copyright (C) 1992-2015 Free Software Foundation, Inc. 3 4This file is part of GCC. 5 6GCC is free software; you can redistribute it and/or modify it under 7the terms of the GNU General Public License as published by the Free 8Software Foundation; either version 3, or (at your option) any later 9version. 10 11GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12WARRANTY; without even the implied warranty of MERCHANTABILITY or 13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14for more details. 15 16You should have received a copy of the GNU General Public License 17along with GCC; see the file COPYING3. If not see 18<http://www.gnu.org/licenses/>. */ 19 20#include "config.h" 21#include "system.h" 22#include "coretypes.h" 23#include "tm.h" 24#include "hash-set.h" 25#include "machmode.h" 26#include "vec.h" 27#include "double-int.h" 28#include "input.h" 29#include "alias.h" 30#include "symtab.h" 31#include "wide-int.h" 32#include "inchash.h" 33#include "tree.h" 34#include "flags.h" 35#include "c-family/c-common.h" 36#include "intl.h" 37#include "diagnostic.h" 38#include "langhooks.h" 39#include "c-family/c-format.h" 40#include "alloc-pool.h" 41 42/* Mingw specific format attributes ms_printf, ms_scanf, and ms_strftime. */ 43 44static format_length_info ms_printf_length_specs[] = 45{ 46 { "h", FMT_LEN_h, STD_C89, NULL, FMT_LEN_none, STD_C89, 0 }, 47 { "l", FMT_LEN_l, STD_C89, NULL, FMT_LEN_none, STD_C89, 0 }, 48 { "I32", FMT_LEN_l, STD_EXT, NULL, FMT_LEN_none, STD_C89, 1 }, 49 { "I64", FMT_LEN_ll, STD_EXT, NULL, FMT_LEN_none, STD_C89, 1 }, 50 { "I", FMT_LEN_L, STD_EXT, NULL, FMT_LEN_none, STD_C89, 1 }, 51 { NULL, FMT_LEN_none, STD_C89, NULL, FMT_LEN_none, STD_C89, 0 } 52}; 53 54static const format_flag_spec ms_printf_flag_specs[] = 55{ 56 { ' ', 0, 0, N_("' ' flag"), N_("the ' ' printf flag"), STD_C89 }, 57 { '+', 0, 0, N_("'+' flag"), N_("the '+' printf flag"), STD_C89 }, 58 { '#', 0, 0, N_("'#' flag"), N_("the '#' printf flag"), STD_C89 }, 59 { '0', 0, 0, N_("'0' flag"), N_("the '0' printf flag"), STD_C89 }, 60 { '-', 0, 0, N_("'-' flag"), N_("the '-' printf flag"), STD_C89 }, 61 { '\'', 0, 0, N_("''' flag"), N_("the ''' printf flag"), STD_EXT }, 62 { 'w', 0, 0, N_("field width"), N_("field width in printf format"), STD_C89 }, 63 { 'p', 0, 0, N_("precision"), N_("precision in printf format"), STD_C89 }, 64 { 'L', 0, 0, N_("length modifier"), N_("length modifier in printf format"), STD_C89 }, 65 { 0, 0, 0, NULL, NULL, STD_C89 } 66}; 67 68static const format_flag_pair ms_printf_flag_pairs[] = 69{ 70 { ' ', '+', 1, 0 }, 71 { '0', '-', 1, 0 }, { '0', 'p', 1, 'i' }, 72 { 0, 0, 0, 0 } 73}; 74 75static const format_flag_spec ms_scanf_flag_specs[] = 76{ 77 { '*', 0, 0, N_("assignment suppression"), N_("the assignment suppression scanf feature"), STD_C89 }, 78 { 'a', 0, 0, N_("'a' flag"), N_("the 'a' scanf flag"), STD_EXT }, 79 { 'w', 0, 0, N_("field width"), N_("field width in scanf format"), STD_C89 }, 80 { 'L', 0, 0, N_("length modifier"), N_("length modifier in scanf format"), STD_C89 }, 81 { '\'', 0, 0, N_("''' flag"), N_("the ''' scanf flag"), STD_EXT }, 82 { 0, 0, 0, NULL, NULL, STD_C89 } 83}; 84 85static const format_flag_pair ms_scanf_flag_pairs[] = 86{ 87 { '*', 'L', 0, 0 }, 88 { 0, 0, 0, 0 } 89}; 90 91static const format_flag_spec ms_strftime_flag_specs[] = 92{ 93 { '#', 0, 0, N_("'#' flag"), N_("the '#' strftime flag"), STD_EXT }, 94 { 0, 0, 0, NULL, NULL, STD_C89 } 95}; 96 97static const format_flag_pair ms_strftime_flag_pairs[] = 98{ 99 { 0, 0, 0, 0 } 100}; 101 102static const format_char_info ms_print_char_table[] = 103{ 104 /* C89 conversion specifiers. */ 105 { "di", 0, STD_C89, { T89_I, BADLEN, T89_S, T89_L, T9L_LL, T99_SST, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp0 +'", "i", NULL }, 106 { "oxX", 0, STD_C89, { T89_UI, BADLEN, T89_US, T89_UL, T9L_ULL, T99_ST, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp0#", "i", NULL }, 107 { "u", 0, STD_C89, { T89_UI, BADLEN, T89_US, T89_UL, T9L_ULL, T99_ST, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp0'", "i", NULL }, 108 { "fgG", 0, STD_C89, { T89_D, BADLEN, BADLEN, T99_D, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp0 +#'", "", NULL }, 109 { "eE", 0, STD_C89, { T89_D, BADLEN, BADLEN, T99_D, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp0 +#", "", NULL }, 110 { "c", 0, STD_C89, { T89_I, BADLEN, T89_S, T94_WI, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-w", "", NULL }, 111 { "s", 1, STD_C89, { T89_C, BADLEN, T89_S, T94_W, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp", "cR", NULL }, 112 { "p", 1, STD_C89, { T89_V, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-w", "c", NULL }, 113 { "n", 1, STD_C89, { T89_I, BADLEN, T89_S, T89_L, T9L_LL, BADLEN, BADLEN, BADLEN, T99_IM, BADLEN, BADLEN, BADLEN }, "", "W", NULL }, 114 /* X/Open conversion specifiers. */ 115 { "C", 0, STD_EXT, { TEX_WI, BADLEN, T89_S, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-w", "", NULL }, 116 { "S", 1, STD_EXT, { TEX_W, BADLEN, T89_S, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp", "R", NULL }, 117 { NULL, 0, STD_C89, NOLENGTHS, NULL, NULL, NULL } 118}; 119 120static const format_char_info ms_scan_char_table[] = 121{ 122 /* C89 conversion specifiers. */ 123 { "di", 1, STD_C89, { T89_I, BADLEN, T89_S, T89_L, T9L_LL, T99_SST, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w'", "W", NULL }, 124 { "u", 1, STD_C89, { T89_UI, BADLEN, T89_US, T89_UL, T9L_ULL, T99_ST, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w'", "W", NULL }, 125 { "oxX", 1, STD_C89, { T89_UI, BADLEN, T89_US, T89_UL, T9L_ULL, T99_ST, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w", "W", NULL }, 126 { "efgEG", 1, STD_C89, { T89_F, BADLEN, BADLEN, T89_D, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w'", "W", NULL }, 127 { "c", 1, STD_C89, { T89_C, BADLEN, T89_S, T94_W, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w", "cW", NULL }, 128 { "s", 1, STD_C89, { T89_C, BADLEN, T89_S, T94_W, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*aw", "cW", NULL }, 129 { "[", 1, STD_C89, { T89_C, BADLEN, BADLEN, T94_W, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*aw", "cW[", NULL }, 130 { "p", 2, STD_C89, { T89_V, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w", "W", NULL }, 131 { "n", 1, STD_C89, { T89_I, BADLEN, T89_S, T89_L, T9L_LL, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "", "W", NULL }, 132 /* X/Open conversion specifiers. */ 133 { "C", 1, STD_EXT, { TEX_W, BADLEN, T89_S, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w", "W", NULL }, 134 { "S", 1, STD_EXT, { TEX_W, BADLEN, T89_S, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*aw", "W", NULL }, 135 { NULL, 0, STD_C89, NOLENGTHS, NULL, NULL, NULL } 136}; 137 138static const format_char_info ms_time_char_table[] = 139{ 140 /* C89 conversion specifiers. */ 141 { "ABZab", 0, STD_C89, NOLENGTHS, "#", "", NULL }, 142 { "cx", 0, STD_C89, NOLENGTHS, "#", "3", NULL }, 143 { "HIMSUWdmw", 0, STD_C89, NOLENGTHS, "#", "", NULL }, 144 { "j", 0, STD_C89, NOLENGTHS, "#", "", NULL }, 145 { "p", 0, STD_C89, NOLENGTHS, "#", "", NULL }, 146 { "X", 0, STD_C89, NOLENGTHS, "#", "", NULL }, 147 { "y", 0, STD_C89, NOLENGTHS, "#", "4", NULL }, 148 { "Y", 0, STD_C89, NOLENGTHS, "#", "", NULL }, 149 { "%", 0, STD_C89, NOLENGTHS, "", "", NULL }, 150 /* C99 conversion specifiers. */ 151 { "z", 0, STD_C99, NOLENGTHS, "#", "", NULL }, 152 { NULL, 0, STD_C89, NOLENGTHS, NULL, NULL, NULL } 153}; 154 155EXPORTED_CONST format_kind_info mingw_format_attributes[3] = 156{ 157 { "ms_printf", ms_printf_length_specs, ms_print_char_table, " +#0-'", NULL, 158 ms_printf_flag_specs, ms_printf_flag_pairs, 159 FMT_FLAG_ARG_CONVERT|FMT_FLAG_DOLLAR_MULTIPLE|FMT_FLAG_USE_DOLLAR|FMT_FLAG_EMPTY_PREC_OK, 160 'w', 0, 'p', 0, 'L', 0, 161 &integer_type_node, &integer_type_node 162 }, 163 { "ms_scanf", ms_printf_length_specs, ms_scan_char_table, "*'", NULL, 164 ms_scanf_flag_specs, ms_scanf_flag_pairs, 165 FMT_FLAG_ARG_CONVERT|FMT_FLAG_SCANF_A_KLUDGE|FMT_FLAG_USE_DOLLAR|FMT_FLAG_ZERO_WIDTH_BAD|FMT_FLAG_DOLLAR_GAP_POINTER_OK, 166 'w', 0, 0, '*', 'L', 0, 167 NULL, NULL 168 }, 169 { "ms_strftime", NULL, ms_time_char_table, "", "#", 170 ms_strftime_flag_specs, ms_strftime_flag_pairs, 171 FMT_FLAG_FANCY_PERCENT_OK, 0, 0, 0, 0, 0, 0, 172 NULL, NULL 173 } 174}; 175 176/* Default overrides for printf, scanf and strftime. */ 177EXPORTED_CONST target_ovr_attr mingw_format_attribute_overrides[4] = 178{ 179 { "ms_printf", "printf" }, 180 { "ms_scanf", "scanf" }, 181 { "ms_strftime", "strftime" } 182}; 183 184/* Setup for option Wpedantic-ms-format. */ 185 186#ifdef TARGET_OVERRIDES_FORMAT_INIT 187 188/* Make sure TARGET_OVERRIDES_FORMAT_INIT is prototyped. */ 189extern void TARGET_OVERRIDES_FORMAT_INIT (void); 190 191/* Helper. */ 192#define C89_OR_EXT (warn_pedantic_ms_format ? STD_EXT : STD_C89) 193 194void 195TARGET_OVERRIDES_FORMAT_INIT (void) 196{ 197 ms_printf_length_specs[2].std = C89_OR_EXT; /* I32 */ 198 ms_printf_length_specs[3].std = C89_OR_EXT; /* I64 */ 199 ms_printf_length_specs[4].std = C89_OR_EXT; /* I */ 200} 201 202#undef C89_OR_EXT 203 204#endif 205