1 /* Check calls to formatted I/O functions (-Wformat). 2 Copyright (C) 1992-2013 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it under 7 the terms of the GNU General Public License as published by the Free 8 Software Foundation; either version 3, or (at your option) any later 9 version. 10 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 for more details. 15 16 You should have received a copy of the GNU General Public License 17 along 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 "tree.h" 25 #include "flags.h" 26 #include "c-family/c-common.h" 27 #include "intl.h" 28 #include "diagnostic.h" 29 #include "langhooks.h" 30 #include "c-family/c-format.h" 31 #include "alloc-pool.h" 32 33 /* Mingw specific format attributes ms_printf, ms_scanf, and ms_strftime. */ 34 35 static format_length_info ms_printf_length_specs[] = 36 { 37 { "h", FMT_LEN_h, STD_C89, NULL, FMT_LEN_none, STD_C89, 0 }, 38 { "l", FMT_LEN_l, STD_C89, NULL, FMT_LEN_none, STD_C89, 0 }, 39 { "I32", FMT_LEN_l, STD_EXT, NULL, FMT_LEN_none, STD_C89, 1 }, 40 { "I64", FMT_LEN_ll, STD_EXT, NULL, FMT_LEN_none, STD_C89, 1 }, 41 { "I", FMT_LEN_L, STD_EXT, NULL, FMT_LEN_none, STD_C89, 1 }, 42 { NULL, FMT_LEN_none, STD_C89, NULL, FMT_LEN_none, STD_C89, 0 } 43 }; 44 45 static const format_flag_spec ms_printf_flag_specs[] = 46 { 47 { ' ', 0, 0, N_("' ' flag"), N_("the ' ' printf flag"), STD_C89 }, 48 { '+', 0, 0, N_("'+' flag"), N_("the '+' printf flag"), STD_C89 }, 49 { '#', 0, 0, N_("'#' flag"), N_("the '#' printf flag"), STD_C89 }, 50 { '0', 0, 0, N_("'0' flag"), N_("the '0' printf flag"), STD_C89 }, 51 { '-', 0, 0, N_("'-' flag"), N_("the '-' printf flag"), STD_C89 }, 52 { '\'', 0, 0, N_("''' flag"), N_("the ''' printf flag"), STD_EXT }, 53 { 'w', 0, 0, N_("field width"), N_("field width in printf format"), STD_C89 }, 54 { 'p', 0, 0, N_("precision"), N_("precision in printf format"), STD_C89 }, 55 { 'L', 0, 0, N_("length modifier"), N_("length modifier in printf format"), STD_C89 }, 56 { 0, 0, 0, NULL, NULL, STD_C89 } 57 }; 58 59 static const format_flag_pair ms_printf_flag_pairs[] = 60 { 61 { ' ', '+', 1, 0 }, 62 { '0', '-', 1, 0 }, { '0', 'p', 1, 'i' }, 63 { 0, 0, 0, 0 } 64 }; 65 66 static const format_flag_spec ms_scanf_flag_specs[] = 67 { 68 { '*', 0, 0, N_("assignment suppression"), N_("the assignment suppression scanf feature"), STD_C89 }, 69 { 'a', 0, 0, N_("'a' flag"), N_("the 'a' scanf flag"), STD_EXT }, 70 { 'w', 0, 0, N_("field width"), N_("field width in scanf format"), STD_C89 }, 71 { 'L', 0, 0, N_("length modifier"), N_("length modifier in scanf format"), STD_C89 }, 72 { '\'', 0, 0, N_("''' flag"), N_("the ''' scanf flag"), STD_EXT }, 73 { 0, 0, 0, NULL, NULL, STD_C89 } 74 }; 75 76 static const format_flag_pair ms_scanf_flag_pairs[] = 77 { 78 { '*', 'L', 0, 0 }, 79 { 0, 0, 0, 0 } 80 }; 81 82 static const format_flag_spec ms_strftime_flag_specs[] = 83 { 84 { '#', 0, 0, N_("'#' flag"), N_("the '#' strftime flag"), STD_EXT }, 85 { 0, 0, 0, NULL, NULL, STD_C89 } 86 }; 87 88 static const format_flag_pair ms_strftime_flag_pairs[] = 89 { 90 { 0, 0, 0, 0 } 91 }; 92 93 static const format_char_info ms_print_char_table[] = 94 { 95 /* C89 conversion specifiers. */ 96 { "di", 0, STD_C89, { T89_I, BADLEN, T89_S, T89_L, T9L_LL, T99_SST, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp0 +'", "i", NULL }, 97 { "oxX", 0, STD_C89, { T89_UI, BADLEN, T89_US, T89_UL, T9L_ULL, T99_ST, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp0#", "i", NULL }, 98 { "u", 0, STD_C89, { T89_UI, BADLEN, T89_US, T89_UL, T9L_ULL, T99_ST, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp0'", "i", NULL }, 99 { "fgG", 0, STD_C89, { T89_D, BADLEN, BADLEN, T99_D, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp0 +#'", "", NULL }, 100 { "eE", 0, STD_C89, { T89_D, BADLEN, BADLEN, T99_D, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp0 +#", "", NULL }, 101 { "c", 0, STD_C89, { T89_I, BADLEN, T89_S, T94_WI, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-w", "", NULL }, 102 { "s", 1, STD_C89, { T89_C, BADLEN, T89_S, T94_W, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp", "cR", NULL }, 103 { "p", 1, STD_C89, { T89_V, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-w", "c", NULL }, 104 { "n", 1, STD_C89, { T89_I, BADLEN, T89_S, T89_L, T9L_LL, BADLEN, BADLEN, BADLEN, T99_IM, BADLEN, BADLEN, BADLEN }, "", "W", NULL }, 105 /* X/Open conversion specifiers. */ 106 { "C", 0, STD_EXT, { TEX_WI, BADLEN, T89_S, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-w", "", NULL }, 107 { "S", 1, STD_EXT, { TEX_W, BADLEN, T89_S, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp", "R", NULL }, 108 { NULL, 0, STD_C89, NOLENGTHS, NULL, NULL, NULL } 109 }; 110 111 static const format_char_info ms_scan_char_table[] = 112 { 113 /* C89 conversion specifiers. */ 114 { "di", 1, STD_C89, { T89_I, BADLEN, T89_S, T89_L, T9L_LL, T99_SST, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w'", "W", NULL }, 115 { "u", 1, STD_C89, { T89_UI, BADLEN, T89_US, T89_UL, T9L_ULL, T99_ST, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w'", "W", NULL }, 116 { "oxX", 1, STD_C89, { T89_UI, BADLEN, T89_US, T89_UL, T9L_ULL, T99_ST, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w", "W", NULL }, 117 { "efgEG", 1, STD_C89, { T89_F, BADLEN, BADLEN, T89_D, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w'", "W", NULL }, 118 { "c", 1, STD_C89, { T89_C, BADLEN, T89_S, T94_W, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w", "cW", NULL }, 119 { "s", 1, STD_C89, { T89_C, BADLEN, T89_S, T94_W, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*aw", "cW", NULL }, 120 { "[", 1, STD_C89, { T89_C, BADLEN, BADLEN, T94_W, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*aw", "cW[", NULL }, 121 { "p", 2, STD_C89, { T89_V, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w", "W", NULL }, 122 { "n", 1, STD_C89, { T89_I, BADLEN, T89_S, T89_L, T9L_LL, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "", "W", NULL }, 123 /* X/Open conversion specifiers. */ 124 { "C", 1, STD_EXT, { TEX_W, BADLEN, T89_S, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w", "W", NULL }, 125 { "S", 1, STD_EXT, { TEX_W, BADLEN, T89_S, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*aw", "W", NULL }, 126 { NULL, 0, STD_C89, NOLENGTHS, NULL, NULL, NULL } 127 }; 128 129 static const format_char_info ms_time_char_table[] = 130 { 131 /* C89 conversion specifiers. */ 132 { "ABZab", 0, STD_C89, NOLENGTHS, "#", "", NULL }, 133 { "cx", 0, STD_C89, NOLENGTHS, "#", "3", NULL }, 134 { "HIMSUWdmw", 0, STD_C89, NOLENGTHS, "#", "", NULL }, 135 { "j", 0, STD_C89, NOLENGTHS, "#", "", NULL }, 136 { "p", 0, STD_C89, NOLENGTHS, "#", "", NULL }, 137 { "X", 0, STD_C89, NOLENGTHS, "#", "", NULL }, 138 { "y", 0, STD_C89, NOLENGTHS, "#", "4", NULL }, 139 { "Y", 0, STD_C89, NOLENGTHS, "#", "", NULL }, 140 { "%", 0, STD_C89, NOLENGTHS, "", "", NULL }, 141 /* C99 conversion specifiers. */ 142 { "z", 0, STD_C99, NOLENGTHS, "#", "", NULL }, 143 { NULL, 0, STD_C89, NOLENGTHS, NULL, NULL, NULL } 144 }; 145 146 EXPORTED_CONST format_kind_info mingw_format_attributes[3] = 147 { 148 { "ms_printf", ms_printf_length_specs, ms_print_char_table, " +#0-'", NULL, 149 ms_printf_flag_specs, ms_printf_flag_pairs, 150 FMT_FLAG_ARG_CONVERT|FMT_FLAG_DOLLAR_MULTIPLE|FMT_FLAG_USE_DOLLAR|FMT_FLAG_EMPTY_PREC_OK, 151 'w', 0, 'p', 0, 'L', 0, 152 &integer_type_node, &integer_type_node 153 }, 154 { "ms_scanf", ms_printf_length_specs, ms_scan_char_table, "*'", NULL, 155 ms_scanf_flag_specs, ms_scanf_flag_pairs, 156 FMT_FLAG_ARG_CONVERT|FMT_FLAG_SCANF_A_KLUDGE|FMT_FLAG_USE_DOLLAR|FMT_FLAG_ZERO_WIDTH_BAD|FMT_FLAG_DOLLAR_GAP_POINTER_OK, 157 'w', 0, 0, '*', 'L', 0, 158 NULL, NULL 159 }, 160 { "ms_strftime", NULL, ms_time_char_table, "", "#", 161 ms_strftime_flag_specs, ms_strftime_flag_pairs, 162 FMT_FLAG_FANCY_PERCENT_OK, 0, 0, 0, 0, 0, 0, 163 NULL, NULL 164 } 165 }; 166 167 /* Default overrides for printf, scanf and strftime. */ 168 EXPORTED_CONST target_ovr_attr mingw_format_attribute_overrides[4] = 169 { 170 { "ms_printf", "printf" }, 171 { "ms_scanf", "scanf" }, 172 { "ms_strftime", "strftime" } 173 }; 174 175 /* Setup for option Wpedantic-ms-format. */ 176 177 #ifdef TARGET_OVERRIDES_FORMAT_INIT 178 179 /* Make sure TARGET_OVERRIDES_FORMAT_INIT is prototyped. */ 180 extern void TARGET_OVERRIDES_FORMAT_INIT (void); 181 182 /* Helper. */ 183 #define C89_OR_EXT (warn_pedantic_ms_format ? STD_EXT : STD_C89) 184 185 void 186 TARGET_OVERRIDES_FORMAT_INIT (void) 187 { 188 ms_printf_length_specs[2].std = C89_OR_EXT; /* I32 */ 189 ms_printf_length_specs[3].std = C89_OR_EXT; /* I64 */ 190 ms_printf_length_specs[4].std = C89_OR_EXT; /* I */ 191 } 192 193 #undef C89_OR_EXT 194 195 #endif 196