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6590fc9f 1/* Check calls to formatted I/O functions (-Wformat).
5624e564 2 Copyright (C) 1992-2015 Free Software Foundation, Inc.
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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"
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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"
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33#include "tree.h"
34#include "flags.h"
39dabefd 35#include "c-family/c-common.h"
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36#include "intl.h"
37#include "diagnostic.h"
38#include "langhooks.h"
39dabefd 39#include "c-family/c-format.h"
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40#include "alloc-pool.h"
41
42/* Mingw specific format attributes ms_printf, ms_scanf, and ms_strftime. */
43
94564826 44static format_length_info ms_printf_length_specs[] =
6590fc9f 45{
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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 },
126edba2 50 { "I", FMT_LEN_L, STD_EXT, NULL, FMT_LEN_none, STD_C89, 1 },
b241b475 51 { NULL, FMT_LEN_none, STD_C89, NULL, FMT_LEN_none, STD_C89, 0 }
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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 },
4ed7f970 65 { 0, 0, 0, NULL, NULL, STD_C89 }
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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 },
4ed7f970 82 { 0, 0, 0, NULL, NULL, STD_C89 }
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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 },
4ed7f970 94 { 0, 0, 0, NULL, NULL, STD_C89 }
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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 },
4ed7f970 117 { NULL, 0, STD_C89, NOLENGTHS, NULL, NULL, NULL }
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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 },
4ed7f970 135 { NULL, 0, STD_C89, NOLENGTHS, NULL, NULL, NULL }
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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 },
4ed7f970 152 { NULL, 0, STD_C89, NOLENGTHS, NULL, NULL, NULL }
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153};
154
34097e36 155EXPORTED_CONST format_kind_info mingw_format_attributes[3] =
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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. */
34097e36 177EXPORTED_CONST target_ovr_attr mingw_format_attribute_overrides[4] =
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178{
179 { "ms_printf", "printf" },
180 { "ms_scanf", "scanf" },
181 { "ms_strftime", "strftime" }
182};
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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