2 * This file is part of cparser.
3 * Copyright (C) 2012 Matthias Braun <matze@braunis.de>
9 #include "adt/strutil.h"
14 static warning_switch_t warning[] = {
15 [WARN_ADDRESS] = { WARN_STATE_ON, "address" },
16 [WARN_AGGREGATE_RETURN] = { WARN_STATE_NONE, "aggregate-return" },
17 [WARN_ATTRIBUTE] = { WARN_STATE_ON, "attribute" },
18 [WARN_CAST_QUAL] = { WARN_STATE_NONE, "cast-qual", },
19 [WARN_CHAR_SUBSCRIPTS] = { WARN_STATE_ON, "char-subscripts", },
20 [WARN_COMMENT] = { WARN_STATE_NONE, "comment", },
21 [WARN_CONVERSION] = { WARN_STATE_NONE, "conversion", },
22 [WARN_DECLARATION_AFTER_STATEMENT] = { WARN_STATE_NONE, "declaration-after-statement", },
23 [WARN_DEPRECATED_DECLARATIONS] = { WARN_STATE_ON, "deprecated-declarations", },
24 [WARN_DIV_BY_ZERO] = { WARN_STATE_ON, "div-by-zero", },
25 [WARN_EMPTY_BODY] = { WARN_STATE_NONE, "empty-body", },
26 [WARN_EMPTY_STATEMENT] = { WARN_STATE_NONE, "empty-statement", },
27 [WARN_ERROR] = { WARN_STATE_NONE, "error" },
28 [WARN_FATAL_ERRORS] = { WARN_STATE_NONE, "fatal-errors" },
29 [WARN_FLOAT_EQUAL] = { WARN_STATE_NONE, "float-equal", },
30 [WARN_FORMAT] = { WARN_STATE_ON, "format" },
31 [WARN_IGNORED_QUALIFIERS] = { WARN_STATE_ON, "ignored-qualifiers" },
32 [WARN_IMPLICIT_FUNCTION_DECLARATION] = { WARN_STATE_ON, "implicit-function-declaration" },
33 [WARN_IMPLICIT_INT] = { WARN_STATE_ON, "implicit-int" },
34 [WARN_LONG_LONG] = { WARN_STATE_NONE, "long-long" },
35 [WARN_MAIN] = { WARN_STATE_ON, "main", },
36 [WARN_MISSING_DECLARATIONS] = { WARN_STATE_NONE, "missing-declarations", },
37 [WARN_MISSING_NORETURN] = { WARN_STATE_NONE, "missing-noreturn", },
38 [WARN_MISSING_PROTOTYPES] = { WARN_STATE_NONE, "missing-prototypes", },
39 [WARN_MULTICHAR] = { WARN_STATE_ON, "multichar", },
40 [WARN_NESTED_EXTERNS] = { WARN_STATE_NONE, "nested-externs" },
41 [WARN_NONNULL] = { WARN_STATE_ON, "nonnull", },
42 [WARN_OLD_STYLE_DEFINITION] = { WARN_STATE_NONE, "old-style-definition", },
43 [WARN_OTHER] = { WARN_STATE_ON, "other" },
44 [WARN_PACKED] = { WARN_STATE_NONE, "packed", },
45 [WARN_PADDED] = { WARN_STATE_NONE, "padded", },
46 [WARN_PARENTHESES] = { WARN_STATE_NONE, "parentheses", },
47 [WARN_POINTER_ARITH] = { WARN_STATE_ON, "pointer-arith", },
48 [WARN_REDUNDANT_DECLS] = { WARN_STATE_ON, "redundant-decls", },
49 [WARN_RETURN_TYPE] = { WARN_STATE_ON, "return-type", },
50 [WARN_SHADOW] = { WARN_STATE_NONE, "shadow", },
51 [WARN_SHADOW_LOCAL] = { WARN_STATE_NONE, "shadow-local", },
52 [WARN_SIGN_COMPARE] = { WARN_STATE_NONE, "sign-compare", },
53 [WARN_STRAY_SEMICOLON] = { WARN_STATE_ON, "stray-semicolon", },
54 [WARN_STRICT_PROTOTYPES] = { WARN_STATE_ON, "strict-prototypes" },
55 [WARN_SWITCH_DEFAULT] = { WARN_STATE_NONE, "switch-default", },
56 [WARN_SWITCH_ENUM] = { WARN_STATE_NONE, "switch-enum", },
57 [WARN_SYSTEM] = { WARN_STATE_NONE, "system", },
58 [WARN_TRADITIONAL] = { WARN_STATE_NONE, "traditional" },
59 [WARN_UNINITIALIZED] = { WARN_STATE_ON, "uninitialized", },
60 [WARN_UNKNOWN_PRAGMAS] = { WARN_STATE_ON, "unknown-pragmas", },
61 [WARN_UNREACHABLE_CODE] = { WARN_STATE_NONE, "unreachable-code" },
62 [WARN_UNUSED_FUNCTION] = { WARN_STATE_NONE, "unused-function", },
63 [WARN_UNUSED_LABEL] = { WARN_STATE_NONE, "unused-label", },
64 [WARN_UNUSED_PARAMETER] = { WARN_STATE_NONE, "unused-parameter", },
65 [WARN_UNUSED_VALUE] = { WARN_STATE_ON, "unused-value", },
66 [WARN_UNUSED_VARIABLE] = { WARN_STATE_NONE, "unused-variable", },
67 [WARN_WRITE_STRINGS] = { WARN_STATE_NONE, "write-strings", },
70 warning_switch_t const *get_warn_switch(warning_t const w)
72 assert((size_t)w < lengthof(warning));
73 assert(warning[w].name);
77 void print_warning_opt_help(void)
79 /* TODO: write explanations */
80 for (warning_switch_t* i = warning; i != endof(warning); ++i) {
82 snprintf(buf, sizeof(buf), "-W%s", i->name);
87 void set_warning_opt(const char *const opt)
89 /* Process prefixes: -W[no-][error=] */
92 bool const no = (rest = strstart(s, "no-")) ? s = rest, true : false;
93 bool const error = (rest = strstart(s, "error=")) ? s = rest, true : false;
95 warn_state_t on = WARN_STATE_NONE;
96 warn_state_t off = WARN_STATE_NONE;
100 on |= WARN_STATE_ERROR;
101 off |= WARN_STATE_NO_ERROR;
104 warn_state_t const tmp = on;
109 for (warning_switch_t* i = warning; i != endof(warning); ++i) {
110 if (streq(i->name, s)) {
111 i->state = (i->state & ~off) | on;
116 if (s[0] == '\0') { // -W is an alias for -Wextra
119 #define OPTX(x) else if (streq(s, x))
120 #define SET(y) (void)(warning[y].state = (warning[y].state & ~off) | on)
122 /* Note: this switched on a lot more warnings than gcc's -Wall */
125 SET(WARN_CHAR_SUBSCRIPTS);
127 SET(WARN_EMPTY_STATEMENT);
129 SET(WARN_IMPLICIT_FUNCTION_DECLARATION);
130 SET(WARN_IMPLICIT_INT);
132 SET(WARN_MISSING_DECLARATIONS);
135 SET(WARN_PARENTHESES);
136 SET(WARN_POINTER_ARITH);
137 SET(WARN_REDUNDANT_DECLS);
138 SET(WARN_RETURN_TYPE);
139 SET(WARN_SHADOW_LOCAL);
140 SET(WARN_SIGN_COMPARE);
141 SET(WARN_STRICT_PROTOTYPES);
142 SET(WARN_SWITCH_ENUM);
143 SET(WARN_UNINITIALIZED);
144 SET(WARN_UNKNOWN_PRAGMAS);
145 SET(WARN_UNREACHABLE_CODE);
146 SET(WARN_UNUSED_FUNCTION);
147 SET(WARN_UNUSED_LABEL);
148 SET(WARN_UNUSED_PARAMETER);
149 SET(WARN_UNUSED_VALUE);
150 SET(WARN_UNUSED_VARIABLE);
155 // TODO SET(function_end_without_return);
156 SET(WARN_EMPTY_STATEMENT);
157 // TODO SET(incomplete_aggregate_init);
158 // TODO SET(missing_field_initializers);
159 // TODO SET(pointless_comparison);
161 SET(WARN_UNUSED_PARAMETER);
162 SET(WARN_UNUSED_VALUE);
165 SET(WARN_IMPLICIT_FUNCTION_DECLARATION);
166 SET(WARN_IMPLICIT_INT);
169 SET(WARN_UNUSED_FUNCTION);
170 SET(WARN_UNUSED_LABEL);
171 SET(WARN_UNUSED_PARAMETER);
172 SET(WARN_UNUSED_VALUE);
173 SET(WARN_UNUSED_VARIABLE);
177 else if (streq(opt /* sic */, "error-implicit-function-declaration")) {
178 /* GCC legacy: This way it only can be activated. */
179 warning[WARN_IMPLICIT_FUNCTION_DECLARATION].state = WARN_STATE_ON | WARN_STATE_ERROR;
183 fprintf(stderr, "warning: ignoring unknown option -W%s\n", opt);
187 void disable_all_warnings(void)
189 for (warning_switch_t* i = warning; i != endof(warning); ++i) {
190 if (i != &warning[WARN_ERROR] &&
191 i != &warning[WARN_FATAL_ERRORS]) {
192 i->state &= ~WARN_STATE_ON;