msformat-c.c revision 1.6
1/* Check calls to formatted I/O functions (-Wformat). 2 Copyright (C) 1992-2016 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 "c-family/c-common.h" 25#include "intl.h" 26#include "c-family/c-format.h" 27 28/* Mingw specific format attributes ms_printf, ms_scanf, and ms_strftime. */ 29 30static format_length_info ms_printf_length_specs[] = 31{ 32 { "h", FMT_LEN_h, STD_C89, NULL, FMT_LEN_none, STD_C89, 0 }, 33 { "l", FMT_LEN_l, STD_C89, NULL, FMT_LEN_none, STD_C89, 0 }, 34 { "I32", FMT_LEN_l, STD_EXT, NULL, FMT_LEN_none, STD_C89, 1 }, 35 { "I64", FMT_LEN_ll, STD_EXT, NULL, FMT_LEN_none, STD_C89, 1 }, 36 { "I", FMT_LEN_L, STD_EXT, NULL, FMT_LEN_none, STD_C89, 1 }, 37 { NULL, FMT_LEN_none, STD_C89, NULL, FMT_LEN_none, STD_C89, 0 } 38}; 39 40static const format_flag_spec ms_printf_flag_specs[] = 41{ 42 { ' ', 0, 0, N_("' ' flag"), N_("the ' ' printf flag"), STD_C89 }, 43 { '+', 0, 0, N_("'+' flag"), N_("the '+' printf flag"), STD_C89 }, 44 { '#', 0, 0, N_("'#' flag"), N_("the '#' printf flag"), STD_C89 }, 45 { '0', 0, 0, N_("'0' flag"), N_("the '0' printf flag"), STD_C89 }, 46 { '-', 0, 0, N_("'-' flag"), N_("the '-' printf flag"), STD_C89 }, 47 { '\'', 0, 0, N_("''' flag"), N_("the ''' printf flag"), STD_EXT }, 48 { 'w', 0, 0, N_("field width"), N_("field width in printf format"), STD_C89 }, 49 { 'p', 0, 0, N_("precision"), N_("precision in printf format"), STD_C89 }, 50 { 'L', 0, 0, N_("length modifier"), N_("length modifier in printf format"), STD_C89 }, 51 { 0, 0, 0, NULL, NULL, STD_C89 } 52}; 53 54static const format_flag_pair ms_printf_flag_pairs[] = 55{ 56 { ' ', '+', 1, 0 }, 57 { '0', '-', 1, 0 }, { '0', 'p', 1, 'i' }, 58 { 0, 0, 0, 0 } 59}; 60 61static const format_flag_spec ms_scanf_flag_specs[] = 62{ 63 { '*', 0, 0, N_("assignment suppression"), N_("the assignment suppression scanf feature"), STD_C89 }, 64 { 'a', 0, 0, N_("'a' flag"), N_("the 'a' scanf flag"), STD_EXT }, 65 { 'w', 0, 0, N_("field width"), N_("field width in scanf format"), STD_C89 }, 66 { 'L', 0, 0, N_("length modifier"), N_("length modifier in scanf format"), STD_C89 }, 67 { '\'', 0, 0, N_("''' flag"), N_("the ''' scanf flag"), STD_EXT }, 68 { 0, 0, 0, NULL, NULL, STD_C89 } 69}; 70 71static const format_flag_pair ms_scanf_flag_pairs[] = 72{ 73 { '*', 'L', 0, 0 }, 74 { 0, 0, 0, 0 } 75}; 76 77static const format_flag_spec ms_strftime_flag_specs[] = 78{ 79 { '#', 0, 0, N_("'#' flag"), N_("the '#' strftime flag"), STD_EXT }, 80 { 0, 0, 0, NULL, NULL, STD_C89 } 81}; 82 83static const format_flag_pair ms_strftime_flag_pairs[] = 84{ 85 { 0, 0, 0, 0 } 86}; 87 88static const format_char_info ms_print_char_table[] = 89{ 90 /* C89 conversion specifiers. */ 91 { "di", 0, STD_C89, { T89_I, BADLEN, T89_S, T89_L, T9L_LL, T99_SST, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp0 +'", "i", NULL }, 92 { "oxX", 0, STD_C89, { T89_UI, BADLEN, T89_US, T89_UL, T9L_ULL, T99_ST, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp0#", "i", NULL }, 93 { "u", 0, STD_C89, { T89_UI, BADLEN, T89_US, T89_UL, T9L_ULL, T99_ST, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp0'", "i", NULL }, 94 { "fgG", 0, STD_C89, { T89_D, BADLEN, BADLEN, T99_D, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp0 +#'", "", NULL }, 95 { "eE", 0, STD_C89, { T89_D, BADLEN, BADLEN, T99_D, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp0 +#", "", NULL }, 96 { "c", 0, STD_C89, { T89_I, BADLEN, T89_S, T94_WI, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-w", "", NULL }, 97 { "s", 1, STD_C89, { T89_C, BADLEN, T89_S, T94_W, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp", "cR", NULL }, 98 { "p", 1, STD_C89, { T89_V, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-w", "c", NULL }, 99 { "n", 1, STD_C89, { T89_I, BADLEN, T89_S, T89_L, T9L_LL, BADLEN, BADLEN, BADLEN, T99_IM, BADLEN, BADLEN, BADLEN }, "", "W", NULL }, 100 /* X/Open conversion specifiers. */ 101 { "C", 0, STD_EXT, { TEX_WI, BADLEN, T89_S, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-w", "", NULL }, 102 { "S", 1, STD_EXT, { TEX_W, BADLEN, T89_S, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "-wp", "R", NULL }, 103 { NULL, 0, STD_C89, NOLENGTHS, NULL, NULL, NULL } 104}; 105 106static const format_char_info ms_scan_char_table[] = 107{ 108 /* C89 conversion specifiers. */ 109 { "di", 1, STD_C89, { T89_I, BADLEN, T89_S, T89_L, T9L_LL, T99_SST, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w'", "W", NULL }, 110 { "u", 1, STD_C89, { T89_UI, BADLEN, T89_US, T89_UL, T9L_ULL, T99_ST, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w'", "W", NULL }, 111 { "oxX", 1, STD_C89, { T89_UI, BADLEN, T89_US, T89_UL, T9L_ULL, T99_ST, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w", "W", NULL }, 112 { "efgEG", 1, STD_C89, { T89_F, BADLEN, BADLEN, T89_D, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w'", "W", NULL }, 113 { "c", 1, STD_C89, { T89_C, BADLEN, T89_S, T94_W, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w", "cW", NULL }, 114 { "s", 1, STD_C89, { T89_C, BADLEN, T89_S, T94_W, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*aw", "cW", NULL }, 115 { "[", 1, STD_C89, { T89_C, BADLEN, BADLEN, T94_W, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*aw", "cW[", NULL }, 116 { "p", 2, STD_C89, { T89_V, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w", "W", NULL }, 117 { "n", 1, STD_C89, { T89_I, BADLEN, T89_S, T89_L, T9L_LL, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "", "W", NULL }, 118 /* X/Open conversion specifiers. */ 119 { "C", 1, STD_EXT, { TEX_W, BADLEN, T89_S, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*w", "W", NULL }, 120 { "S", 1, STD_EXT, { TEX_W, BADLEN, T89_S, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN, BADLEN }, "*aw", "W", NULL }, 121 { NULL, 0, STD_C89, NOLENGTHS, NULL, NULL, NULL } 122}; 123 124static const format_char_info ms_time_char_table[] = 125{ 126 /* C89 conversion specifiers. */ 127 { "ABZab", 0, STD_C89, NOLENGTHS, "#", "", NULL }, 128 { "cx", 0, STD_C89, NOLENGTHS, "#", "3", NULL }, 129 { "HIMSUWdmw", 0, STD_C89, NOLENGTHS, "#", "", NULL }, 130 { "j", 0, STD_C89, NOLENGTHS, "#", "", NULL }, 131 { "p", 0, STD_C89, NOLENGTHS, "#", "", NULL }, 132 { "X", 0, STD_C89, NOLENGTHS, "#", "", NULL }, 133 { "y", 0, STD_C89, NOLENGTHS, "#", "4", NULL }, 134 { "Y", 0, STD_C89, NOLENGTHS, "#", "", NULL }, 135 { "%", 0, STD_C89, NOLENGTHS, "", "", NULL }, 136 /* C99 conversion specifiers. */ 137 { "z", 0, STD_C99, NOLENGTHS, "#", "", NULL }, 138 { NULL, 0, STD_C89, NOLENGTHS, NULL, NULL, NULL } 139}; 140 141EXPORTED_CONST format_kind_info mingw_format_attributes[3] = 142{ 143 { "ms_printf", ms_printf_length_specs, ms_print_char_table, " +#0-'", NULL, 144 ms_printf_flag_specs, ms_printf_flag_pairs, 145 FMT_FLAG_ARG_CONVERT|FMT_FLAG_DOLLAR_MULTIPLE|FMT_FLAG_USE_DOLLAR|FMT_FLAG_EMPTY_PREC_OK, 146 'w', 0, 'p', 0, 'L', 0, 147 &integer_type_node, &integer_type_node 148 }, 149 { "ms_scanf", ms_printf_length_specs, ms_scan_char_table, "*'", NULL, 150 ms_scanf_flag_specs, ms_scanf_flag_pairs, 151 FMT_FLAG_ARG_CONVERT|FMT_FLAG_SCANF_A_KLUDGE|FMT_FLAG_USE_DOLLAR|FMT_FLAG_ZERO_WIDTH_BAD|FMT_FLAG_DOLLAR_GAP_POINTER_OK, 152 'w', 0, 0, '*', 'L', 0, 153 NULL, NULL 154 }, 155 { "ms_strftime", NULL, ms_time_char_table, "", "#", 156 ms_strftime_flag_specs, ms_strftime_flag_pairs, 157 FMT_FLAG_FANCY_PERCENT_OK, 0, 0, 0, 0, 0, 0, 158 NULL, NULL 159 } 160}; 161 162/* Default overrides for printf, scanf and strftime. */ 163EXPORTED_CONST target_ovr_attr mingw_format_attribute_overrides[4] = 164{ 165 { "ms_printf", "printf" }, 166 { "ms_scanf", "scanf" }, 167 { "ms_strftime", "strftime" } 168}; 169 170/* Setup for option Wpedantic-ms-format. */ 171 172#ifdef TARGET_OVERRIDES_FORMAT_INIT 173 174/* Make sure TARGET_OVERRIDES_FORMAT_INIT is prototyped. */ 175extern void TARGET_OVERRIDES_FORMAT_INIT (void); 176 177/* Helper. */ 178#define C89_OR_EXT (warn_pedantic_ms_format ? STD_EXT : STD_C89) 179 180void 181TARGET_OVERRIDES_FORMAT_INIT (void) 182{ 183 ms_printf_length_specs[2].std = C89_OR_EXT; /* I32 */ 184 ms_printf_length_specs[3].std = C89_OR_EXT; /* I64 */ 185 ms_printf_length_specs[4].std = C89_OR_EXT; /* I */ 186} 187 188#undef C89_OR_EXT 189 190#endif 191