1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
|
------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- W A R N S W --
-- --
-- B o d y --
-- --
-- Copyright (C) 1999-2024, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT 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 distributed with GNAT; see file COPYING3. If not, go to --
-- http://www.gnu.org/licenses for a complete copy of the license. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
with Opt; use Opt;
with Output; use Output;
with System.Case_Util; use System.Case_Util;
package body Warnsw is
subtype Lowercase is Character range 'a' .. 'z';
-- Warning-enable switches are lowercase letters
Switch_To_Flag_Mapping : constant array (Warning_Family, Lowercase) of
-- Mapping from the letter after "-gnatw", "-gnatw." or "-gnatw_" to
-- the corresponding flag for the warning it enables. Special_Case means
-- Set_Warning_Switch must do something special, as opposed to simply
-- setting the corresponding flag. No_Such_Warning means the letter
-- is not a defined warning switch, which is an error.
X.Opt_Warnings_Enum :=
(Plain =>
('a' | 'e' | 'n' | 's' | 'u' | 'y' => Special_Case,
'b' => X.Warn_On_Bad_Fixed_Value,
'c' => X.Constant_Condition_Warnings,
'd' => X.Warn_On_Dereference,
'f' => X.Check_Unreferenced_Formals,
'g' => X.Warn_On_Unrecognized_Pragma,
'h' => X.Warn_On_Hiding,
'i' => X.Implementation_Unit_Warnings,
'j' => X.Warn_On_Obsolescent_Feature,
'k' => X.Warn_On_Constant,
'l' => X.Elab_Warnings,
'm' => X.Warn_On_Modified_Unread,
'o' => X.Address_Clause_Overlay_Warnings,
'p' => X.Ineffective_Inline_Warnings,
'q' => X.Warn_On_Questionable_Missing_Parens,
'r' => X.Warn_On_Redundant_Constructs,
't' => X.Warn_On_Deleted_Code,
'v' => X.Warn_On_No_Value_Assigned,
'w' => X.Warn_On_Assumed_Low_Bound,
'x' => X.Warn_On_Export_Import,
'z' => X.Warn_On_Unchecked_Conversion),
'.' =>
('e' | 'g' | 'x' => Special_Case,
'a' => X.Warn_On_Assertion_Failure,
'b' => X.Warn_On_Biased_Representation,
'c' => X.Warn_On_Unrepped_Components,
'd' => X.Warning_Doc_Switch,
'f' => X.Warn_On_Elab_Access,
'h' => X.Warn_On_Record_Holes,
'i' => X.Warn_On_Overlap,
'j' => X.Warn_On_Late_Primitives,
'k' => X.Warn_On_Standard_Redefinition,
'l' => X.List_Inherited_Aspects,
'm' => X.Warn_On_Suspicious_Modulus_Value,
'n' => X.Warn_On_Atomic_Synchronization,
'o' => X.Warn_On_All_Unread_Out_Parameters,
'p' => X.Warn_On_Parameter_Order,
'q' => X.Warn_On_Questionable_Layout,
'r' => X.Warn_On_Object_Renames_Function,
's' => X.Warn_On_Overridden_Size,
't' => X.Warn_On_Suspicious_Contract,
'u' => X.Warn_On_Unordered_Enumeration_Type,
'v' => X.Warn_On_Reverse_Bit_Order,
'w' => X.Warn_On_Warnings_Off,
'y' => X.List_Body_Required_Info,
'z' => X.Warn_On_Size_Alignment),
'_' =>
('b' | 'd' | 'e' | 'f' | 'g' | 'h' | 'i' | 'k' | 'l' | 'm' |
'n' | 'o' | 't' | 'u' | 'v' | 'w' | 'x' | 'y' | 'z' =>
No_Such_Warning,
'a' => X.Warn_On_Anonymous_Allocators,
'c' => X.Warn_On_Unknown_Compile_Time_Warning,
'j' => X.Warn_On_Non_Dispatching_Primitives,
'p' => X.Warn_On_Pedantic_Checks,
'q' => X.Warn_On_Ignored_Equality,
'r' => X.Warn_On_Component_Order,
's' => X.Warn_On_Ineffective_Predicate_Test));
All_Warnings : constant Warnings_State := -- Warnings set by -gnatw.e
(X.Elab_Info_Messages |
X.Warning_Doc_Switch |
X.Warn_On_Ada_2022_Compatibility |
X.Warn_On_Elab_Access |
X.No_Warn_On_Non_Local_Exception => False,
others => True);
-- Warning_Doc_Switch is not really a warning to be enabled, but controls
-- the form of warnings printed. No_Warn_On_Non_Local_Exception is handled
-- specially (see Warn_On_Non_Local_Exception). The others are not part of
-- -gnatw.e for historical reasons.
WA_Warnings : constant Warnings_State := -- Warnings set by -gnatwa
(X.Check_Unreferenced | -- -gnatwf/-gnatwu
X.Check_Unreferenced_Formals | -- -gnatwf/-gnatwu
X.Check_Withs | -- -gnatwu
X.Constant_Condition_Warnings | -- -gnatwc
X.Implementation_Unit_Warnings | -- -gnatwi
X.Ineffective_Inline_Warnings | -- -gnatwp
X.Warn_On_Ada_2005_Compatibility | -- -gnatwy
X.Warn_On_Ada_2012_Compatibility | -- -gnatwy
X.Warn_On_Anonymous_Allocators | -- -gnatw_a
X.Warn_On_Assertion_Failure | -- -gnatw.a
X.Warn_On_Assumed_Low_Bound | -- -gnatww
X.Warn_On_Bad_Fixed_Value | -- -gnatwb
X.Warn_On_Biased_Representation | -- -gnatw.b
X.Warn_On_Constant | -- -gnatwk
X.Warn_On_Export_Import | -- -gnatwx
X.Warn_On_Ineffective_Predicate_Test | -- -gnatw_s
X.Warn_On_Late_Primitives | -- -gnatw.j
X.Warn_On_Modified_Unread | -- -gnatwm
X.Warn_On_No_Value_Assigned | -- -gnatwv
X.Warn_On_Non_Local_Exception | -- -gnatw.x
X.Warn_On_Object_Renames_Function | -- -gnatw.r
X.Warn_On_Obsolescent_Feature | -- -gnatwj
X.Warn_On_Overlap | -- -gnatw.i
X.Warn_On_Parameter_Order | -- -gnatw.p
X.Warn_On_Questionable_Missing_Parens | -- -gnatwq
X.Warn_On_Redundant_Constructs | -- -gnatwr
X.Warn_On_Reverse_Bit_Order | -- -gnatw.v
X.Warn_On_Size_Alignment | -- -gnatw.z
X.Warn_On_Suspicious_Contract | -- -gnatw.t
X.Warn_On_Suspicious_Modulus_Value | -- -gnatw.m
X.Warn_On_Unchecked_Conversion | -- -gnatwz
X.Warn_On_Unrecognized_Pragma | -- -gnatwg
X.Warn_On_Unrepped_Components => -- -gnatw.c
True,
others => False);
----------------------
-- Restore_Warnings --
----------------------
procedure Restore_Warnings (W : Warnings_State) is
begin
Warning_Flags := W;
end Restore_Warnings;
-------------------
-- Save_Warnings --
-------------------
function Save_Warnings return Warnings_State is
begin
return Warning_Flags;
end Save_Warnings;
----------------------------
-- Set_GNAT_Mode_Warnings --
----------------------------
procedure Set_GNAT_Mode_Warnings is
begin
-- Set -gnatwa warnings and no others
Warning_Flags := (Warning_Flags and not All_Warnings) or WA_Warnings;
-- These warnings are added to the -gnatwa set
Address_Clause_Overlay_Warnings := True;
Warn_On_Questionable_Layout := True;
Warn_On_Overridden_Size := True;
-- These warnings are removed from the -gnatwa set
Implementation_Unit_Warnings := False;
Warn_On_Non_Dispatching_Primitives := False;
Warn_On_Non_Local_Exception := False;
No_Warn_On_Non_Local_Exception := True;
Warn_On_Reverse_Bit_Order := False;
Warn_On_Size_Alignment := False;
Warn_On_Unrepped_Components := False;
end Set_GNAT_Mode_Warnings;
------------------------
-- Set_Warning_Switch --
------------------------
function Set_Warning_Switch
(Family : Warning_Family; C : Character) return Boolean
is
L : constant Character := To_Lower (C);
begin
-- Error case
if L not in Lowercase
or else Switch_To_Flag_Mapping (Family, L) = No_Such_Warning
then
if Ignore_Unrecognized_VWY_Switches then
declare
Family_Switch : constant String :=
(case Family is
when Plain => "", when '.' => ".", when '_' => "_");
begin
Write_Line
("unrecognized switch -gnatw" & Family_Switch & C &
" ignored");
end;
return True;
else
return False;
end if;
end if;
-- Special cases that don't fall into the normal pattern below
if Switch_To_Flag_Mapping (Family, L) = Special_Case then
case Family is
when Plain =>
case C is
when 'a' =>
-- "or" in the -gnatwa flags, possibly leaving others set
Warning_Flags := Warning_Flags or WA_Warnings;
when 'A' =>
-- Turn off the All_Warnings flags, except that
-- No_Warn_On_Non_Local_Exception is a special case.
Warning_Flags := Warning_Flags and not All_Warnings;
No_Warn_On_Non_Local_Exception := True;
when 'e' =>
Warning_Mode := Treat_As_Error;
when 'E' =>
Warning_Mode := Treat_Run_Time_Warnings_As_Errors;
when 'n' =>
Warning_Mode := Normal;
when 's' =>
Warning_Mode := Suppress;
when 'u' =>
Check_Unreferenced := True;
Check_Withs := True;
Check_Unreferenced_Formals := True;
when 'U' =>
Check_Unreferenced := False;
Check_Withs := False;
Check_Unreferenced_Formals := False;
when 'y' =>
Warn_On_Ada_2005_Compatibility := True;
Warn_On_Ada_2012_Compatibility := True;
when 'Y' =>
Warn_On_Ada_2005_Compatibility := False;
Warn_On_Ada_2012_Compatibility := False;
when others => raise Program_Error;
end case;
when '.' =>
case C is
when 'e' =>
-- "or" in the All_Warnings flags
Warning_Flags := Warning_Flags or All_Warnings;
when 'g' =>
Set_GNAT_Mode_Warnings;
when 'x' =>
Warn_On_Non_Local_Exception := True;
when 'X' =>
Warn_On_Non_Local_Exception := False;
No_Warn_On_Non_Local_Exception := True;
when others => raise Program_Error;
end case;
when '_' =>
raise Program_Error;
end case;
return True;
end if;
-- Normal pattern (lower case enables the warning, upper case disables
-- the warning).
if C in Lowercase then
Warning_Flags (Switch_To_Flag_Mapping (Family, C)) := True;
elsif L in Lowercase then
Warning_Flags (Switch_To_Flag_Mapping (Family, L)) := False;
else
raise Program_Error;
end if;
return True;
end Set_Warning_Switch;
end Warnsw;
|
