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freebsd/usr.bin/xlint/lint1/err.c
Joerg Wunsch 6b024ad2a8 Well, Jochen adopted most of my submissions. So only the different 
style of error reporting (i prefer gcc style to be consistent with the
compiler) is left, plus a minor nit he's most likely been overlooking.

There are still problems with bootstrapping, and you should expect
troubles when linting libc...
1995-11-06 21:54:02 +00:00

544 lines
22 KiB
C
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/* $NetBSD: err.c,v 1.8 1995/10/02 17:37:00 jpo Exp $ */
/*
* Copyright (c) 1994, 1995 Jochen Pohl
* All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Jochen Pohl for
* The NetBSD Project.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef lint
static char rcsid[] = "$NetBSD: err.c,v 1.8 1995/10/02 17:37:00 jpo Exp $";
#endif
/* number of errors found */
int nerr;
/* number of syntax errors */
int sytxerr;
#include <stdlib.h>
#ifdef __STDC__
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#include "lint1.h"
static const char *basename __P((const char *));
static void verror __P((int, va_list));
static void vwarning __P((int, va_list));
const char *msgs[] = {
"syntax error: empty declaration", /* 0 */
"old style declaration; add int", /* 1 */
"empty declaration", /* 2 */
"%s declared in argument declaration list", /* 3 */
"illegal type combination", /* 4 */
"modifying typedef with '%s'; only qualifiers allowed", /* 5 */
"use 'double' instead of 'long float'", /* 6 */
"only one storage class allowed", /* 7 */
"illegal storage class", /* 8 */
"only register valid as formal parameter storage class", /* 9 */
"duplicate '%s'", /* 10 */
"bit-field initializer out of range", /* 11 */
"compiler takes size of function", /* 12 */
"incomplete enum type: %s", /* 13 */
"compiler takes alignment of function", /* 14 */
"function returns illegal type", /* 15 */
"array of function is illegal", /* 16 */
"null dimension", /* 17 */
"illegal use of 'void'", /* 18 */
"void type for %s", /* 19 */
"zero or negative array dimension", /* 20 */
"redeclaration of formal parameter %s", /* 21 */
"incomplete or misplaced function definition", /* 22 */
"undefined label %s", /* 23 */
"cannot initialize function: %s", /* 24 */
"cannot initialize typedef: %s", /* 25 */
"cannot initialize extern declaration: %s", /* 26 */
"redeclaration of %s", /* 27 */
"redefinition of %s", /* 28 */
"previously declared extern, becomes static: %s", /* 29 */
"redeclaration of %s; ANSI C requires static", /* 30 */
"incomplete structure or union %s: %s", /* 31 */
"argument type defaults to 'int': %s", /* 32 */
"duplicate member name: %s", /* 33 */
"nonportable bit-field type", /* 34 */
"illegal bit-field type", /* 35 */
"illegal bit-field size", /* 36 */
"zero size bit-field", /* 37 */
"function illegal in structure or union", /* 38 */
"illegal zero sized structure member: %s", /* 39 */
"unknown size: %s", /* 40 */
"illegal use of bit-field", /* 41 */
"forward reference to enum type", /* 42 */
"redefinition hides earlier one: %s", /* 43 */
"declaration introduces new type in ANSI C: %s %s", /* 44 */
"base type is really '%s %s'", /* 45 */
"(%s) tag redeclared", /* 46 */
"zero sized %s", /* 47 */
"overflow in enumeration values: %s", /* 48 */
"struct or union member must be named", /* 49 */
"a function is declared as an argument: %s", /* 50 */
"parameter mismatch: %d declared, %d defined", /* 51 */
"cannot initialize parameter: %s", /* 52 */
"declared argument %s is missing", /* 53 */
"trailing ',' prohibited in enum declaration", /* 54 */
"integral constant expression expected", /* 55 */
"integral constant too large", /* 56 */
"enumeration constant hides parameter: %s", /* 57 */
"type does not match prototype: %s", /* 58 */
"formal parameter lacks name: param #%d", /* 59 */
"void must be sole parameter", /* 60 */
"void parameter cannot have name: %s", /* 61 */
"function prototype parameters must have types", /* 62 */
"prototype does not match old-style definition", /* 63 */
"()-less function definition", /* 64 */
"%s has no named members", /* 65 */
"syntax requires ';' after last struct/union member", /* 66 */
"cannot return incomplete type", /* 67 */
"typedef already qualified with '%s'", /* 68 */
"inappropriate qualifiers with 'void'", /* 69 */
"%soperand of '%s' is unsigned in ANSI C", /* 70 */
"too many characters in character constant", /* 71 */
"typedef declares no type name", /* 72 */
"empty character constant", /* 73 */
"no hex digits follow \\x", /* 74 */
"overflow in hex escape", /* 75 */
"character escape does not fit in character", /* 76 */
"bad octal digit %c", /* 77 */
"nonportable character escape", /* 78 */
"dubious escape \\%c", /* 79 */
"dubious escape \\%o", /* 80 */
"\\a undefined in traditional C", /* 81 */
"\\x undefined in traditional C", /* 82 */
"storage class after type is obsolescent", /* 83 */
"ANSI C requires formal parameter before '...'", /* 84 */
"dubious tag declaration: %s %s", /* 85 */
"automatic hides external declaration: %s", /* 86 */
"static hides external declaration: %s", /* 87 */
"typedef hides external declaration: %s", /* 88 */
"typedef redeclared: %s", /* 89 */
"inconsistent redeclaration of extern: %s", /* 90 */
"declaration hides parameter: %s", /* 91 */
"inconsistent redeclaration of static: %s", /* 92 */
"dubious static function at block level: %s", /* 93 */
"function has illegal storage class: %s", /* 94 */
"declaration hides earlier one: %s", /* 95 */
"cannot dereference non-pointer type", /* 96 */
"suffix U is illegal in traditional C", /* 97 */
"suffixes F and L are illegal in traditional C", /* 98 */
"%s undefined", /* 99 */
"unary + is illegal in traditional C", /* 100 */
"undefined struct/union member: %s", /* 101 */
"illegal member use: %s", /* 102 */
"left operand of '.' must be struct/union object", /* 103 */
"left operand of '->' must be pointer to struct/union", /* 104 */
"non-unique member requires struct/union %s", /* 105 */
"left operand of '->' must be pointer", /* 106 */
"operands of '%s' have incompatible types", /* 107 */
"operand of '%s' has incompatible type", /* 108 */
"void type illegal in expression", /* 109 */
"pointer to function is not allowed here", /* 110 */
"unacceptable operand of '%s'", /* 111 */
"cannot take address of bit-field", /* 112 */
"cannot take address of register %s", /* 113 */
"%soperand of '%s' must be lvalue", /* 114 */
"%soperand of '%s' must be modifiable lvalue", /* 115 */
"illegal pointer subtraction", /* 116 */
"bitwise operation on signed value possibly nonportable", /* 117 */
"semantics of '%s' change in ANSI C; use explicit cast", /* 118 */
"conversion of '%s' to '%s' is out of range", /* 119 */
"bitwise operation on signed value nonportable", /* 120 */
"negative shift", /* 121 */
"shift greater than size of object", /* 122 */
"illegal combination of pointer and integer, op %s", /* 123 */
"illegal pointer combination, op %s", /* 124 */
"ANSI C forbids ordered comparisons of pointers to functions",/* 125 */
"incompatible types in conditional", /* 126 */
"'&' before array or function: ignored", /* 127 */
"operands have incompatible pointer types, op %s", /* 128 */
"expression has null effect", /* 129 */
"enum type mismatch, op %s", /* 130 */
"conversion to '%s' may sign-extend incorrectly", /* 131 */
"conversion from '%s' may lose accuracy", /* 132 */
"conversion of pointer to '%s' loses bits", /* 133 */
"conversion of pointer to '%s' may lose bits", /* 134 */
"possible pointer alignment problem", /* 135 */
"cannot do pointer arithmetic on operand of unknown size", /* 136 */
"use of incomplete enum type, op %s", /* 137 */
"unknown operand size, op %s", /* 138 */
"division by 0", /* 139 */
"modulus by 0", /* 140 */
"integer overflow detected, op %s", /* 141 */
"floating point overflow detected, op %s", /* 142 */
"cannot take size of incomplete type", /* 143 */
"cannot take size of function", /* 144 */
"cannot take size of bit-field", /* 145 */
"cannot take size of void", /* 146 */
"invalid cast expression", /* 147 */
"improper cast of void expression", /* 148 */
"illegal function", /* 149 */
"argument mismatch: %d arg%s passed, %d expected", /* 150 */
"void expressions may not be arguments, arg #%d", /* 151 */
"argument cannot have unknown size, arg #%d", /* 152 */
"argument has incompatible pointer type, arg #%d", /* 153 */
"illegal combination of pointer and integer, arg #%d", /* 154 */
"argument is incompatible with prototype, arg #%d", /* 155 */
"enum type mismatch, arg #%d", /* 156 */
"ANSI C treats constant as unsigned", /* 157 */
"%s may be used before set", /* 158 */
"assignment in conditional context", /* 159 */
"operator '==' found where '=' was expected", /* 160 */
"constant in conditional context", /* 161 */
"comparision of %s with %s, op %s", /* 162 */
"a cast does not yield an lvalue", /* 163 */
"assignment of negative constant to unsigned type", /* 164 */
"constant truncated by assignment", /* 165 */
"precision lost in bit-field assignment", /* 166 */
"array subscript cannot be negative: %ld", /* 167 */
"array subscript cannot be > %d: %ld", /* 168 */
"precedence confusion possible: parenthesize!", /* 169 */
"first operand must have scalar type, op ? :", /* 170 */
"assignment type mismatch", /* 171 */
"too many struct/union initializers", /* 172 */
"too many array initializers", /* 173 */
"too many initializers", /* 174 */
"initialisation of an incomplete type", /* 175 */
"invalid initializer", /* 176 */
"non-constant initializer", /* 177 */
"initializer does not fit", /* 178 */
"cannot initialize struct/union with no named member", /* 179 */
"bit-field initializer does not fit", /* 180 */
"{}-enclosed initializer required", /* 181 */
"incompatible pointer types", /* 182 */
"illegal combination of pointer and integer", /* 183 */
"illegal pointer combination", /* 184 */
"initialisation type mismatch", /* 185 */
"bit-field initialisation is illegal in traditional C", /* 186 */
"non-null byte ignored in string initializer", /* 187 */
"no automatic aggregate initialization in traditional C", /* 188 */
"assignment of struct/union illegal in traditional C", /* 189 */
"empty array declaration: %s", /* 190 */
"%s set but not used in function %s", /* 191 */
"%s unused in function %s", /* 192 */
"statement not reached", /* 193 */
"label %s redefined", /* 194 */
"case not in switch", /* 195 */
"case label affected by conversion", /* 196 */
"non-constant case expression", /* 197 */
"non-integral case expression", /* 198 */
"duplicate case in switch: %ld", /* 199 */
"duplicate case in switch: %lu", /* 200 */
"default outside switch", /* 201 */
"duplicate default in switch", /* 202 */
"case label must be of type `int' in traditional C", /* 203 */
"controlling expressions must have scalar type", /* 204 */
"switch expression must have integral type", /* 205 */
"enumeration value(s) not handled in switch", /* 206 */
"loop not entered at top", /* 207 */
"break outside loop or switch", /* 208 */
"continue outside loop", /* 209 */
"enum type mismatch in initialisation", /* 210 */
"return value type mismatch", /* 211 */
"cannot return incomplete type", /* 212 */
"void function %s cannot return value", /* 213 */
"function %s expects to return value", /* 214 */
"function implicitly declared to return int", /* 215 */
"function %s has return (e); and return;", /* 216 */
"function %s falls off bottom without returning value", /* 217 */
"ANSI C treats constant as unsigned, op %s", /* 218 */
"concatenated strings are illegal in traditional C", /* 219 */
"fallthrough on case statement", /* 220 */
"initialisation of unsigned with negative constant", /* 221 */
"conversion of negative constant to unsigned type", /* 222 */
"end-of-loop code not reached", /* 223 */
"cannot recover from previous errors", /* 224 */
"static function called but not defined: %s()", /* 225 */
"static variable %s unused", /* 226 */
"const object %s should have initializer", /* 227 */
"function cannot return const or volatile object", /* 228 */
"questionable conversion of function pointer", /* 229 */
"nonportable character comparision, op %s", /* 230 */
"argument %s unused in function %s", /* 231 */
"label %s unused in function %s", /* 232 */
"struct %s never defined", /* 233 */
"union %s never defined", /* 234 */
"enum %s never defined", /* 235 */
"static function %s unused", /* 236 */
"redeclaration of formal parameter %s", /* 237 */
"initialisation of union is illegal in traditional C", /* 238 */
"constant argument to NOT", /* 239 */
"assignment of different structures", /* 240 */
"dubious operation on enum, op %s", /* 241 */
"combination of '%s' and '%s', op %s", /* 242 */
"dubious comparision of enums, op %s", /* 243 */
"illegal structure pointer combination", /* 244 */
"illegal structure pointer combination, op %s", /* 245 */
"dubious conversion of enum to '%s'", /* 246 */
"pointer casts may be troublesome", /* 247 */
"floating-point constant out of range", /* 248 */
"syntax error", /* 249 */
"unknown character \\%o", /* 250 */
"malformed integer constant", /* 251 */
"integer constant out of range", /* 252 */
"unterminated character constant", /* 253 */
"newline in string or char constant", /* 254 */
"undefined or invalid # directive", /* 255 */
"unterminated comment", /* 256 */
"extra characters in lint comment", /* 257 */
"unterminated string constant", /* 258 */
"conversion to '%s' due to prototype, arg #%d", /* 259 */
"previous declaration of %s", /* 260 */
"previous definition of %s", /* 261 */
"\\\" inside character constants undefined in traditional C", /* 262 */
"\\? undefined in traditional C", /* 263 */
"\\v undefined in traditional C", /* 264 */
"%s C does not support 'long long'", /* 265 */
"'long double' is illegal in traditional C", /* 266 */
"shift equal to size of object", /* 267 */
"variable declared inline: %s", /* 268 */
"argument declared inline: %s", /* 269 */
"function prototypes are illegal in traditional C", /* 270 */
"switch expression must be of type `int' in traditional C", /* 271 */
"empty translation unit", /* 272 */
"bit-field type '%s' invalid in ANSI C", /* 273 */
"ANSI C forbids comparision of %s with %s", /* 274 */
"cast discards 'const' from pointer target type", /* 275 */
"", /* 276 */
"initialisation of '%s' with '%s'", /* 277 */
"combination of '%s' and '%s', arg #%d", /* 278 */
"combination of '%s' and '%s' in return", /* 279 */
"must be outside function: /* %s */", /* 280 */
"duplicate use of /* %s */", /* 281 */
"must precede function definition: /* %s */", /* 282 */
"argument number mismatch with directive: /* %s */", /* 283 */
"fallthrough on default statement", /* 284 */
"prototype declaration", /* 285 */
"function definition is not a prototype", /* 286 */
"function declaration is not a prototype", /* 287 */
"dubious use of /* VARARGS */ with /* %s */", /* 288 */
"can't be used together: /* PRINTFLIKE */ /* SCANFLIKE */", /* 289 */
"static function %s declared but not defined", /* 290 */
"invalid multibyte character", /* 291 */
"cannot concatenate wide and regular string literals", /* 292 */
"argument %d must be 'char *' for PRINTFLIKE/SCANFLIKE", /* 293 */
"multi-character character constant", /* 294 */
"conversion of '%s' to '%s' is out of range, arg #%d", /* 295 */
"conversion of negative constant to unsigned type, arg #%d", /* 296 */
"conversion to '%s' may sign-extend incorrectly, arg #%d", /* 297 */
"conversion from '%s' may lose accuracy, arg #%d", /* 298 */
"prototype does not match old style definition, arg #%d", /* 299 */
"old style definition", /* 300 */
"array of incomplete type", /* 301 */
"%s returns pointer to automatic object", /* 302 */
"ANSI C forbids conversion of %s to %s", /* 303 */
"ANSI C forbids conversion of %s to %s, arg #%d", /* 304 */
"ANSI C forbids conversion of %s to %s, op %s", /* 305 */
"constant truncated by conversion, op %s", /* 306 */
"static variable %s set but not used", /* 307 */
"", /* 308 */
"extra bits set to 0 in conversion of '%s' to '%s', op %s", /* 309 */
};
/*
* If Fflag is not set basename() returns a pointer to the last
* component of the path, otherwise it returns the argument.
*/
static const char *
basename(path)
const char *path;
{
const char *cp, *cp1, *cp2;
if (Fflag)
return (path);
cp = cp1 = cp2 = path;
while (*cp != '\0') {
if (*cp++ == '/') {
cp2 = cp1;
cp1 = cp;
}
}
return (*cp1 == '\0' ? cp2 : cp1);
}
static void
verror(n, ap)
int n;
va_list ap;
{
const char *fn;
fn = basename(curr_pos.p_file);
(void)printf("%s:%d: ", fn, curr_pos.p_line);
(void)vprintf(msgs[n], ap);
(void)printf("\n");
nerr++;
}
static void
vwarning(n, ap)
int n;
va_list ap;
{
const char *fn;
if (nowarn)
/* this warning is suppressed by a LINTED comment */
return;
fn = basename(curr_pos.p_file);
(void)printf("%s:%d: warning: ", fn, curr_pos.p_line);
(void)vprintf(msgs[n], ap);
(void)printf("\n");
}
void
#ifdef __STDC__
error(int n, ...)
#else
error(n, va_alist)
int n;
va_dcl
#endif
{
va_list ap;
#ifdef __STDC__
va_start(ap, n);
#else
va_start(ap);
#endif
verror(n, ap);
va_end(ap);
}
void
#ifdef __STDC__
lerror(const char *msg, ...)
#else
lerror(msg, va_alist)
const char *msg;
va_dcl
#endif
{
va_list ap;
const char *fn;
#ifdef __STDC__
va_start(ap, msg);
#else
va_start(ap);
#endif
fn = basename(curr_pos.p_file);
(void)fprintf(stderr, "%s:%d: lint error: ", fn, curr_pos.p_line);
(void)vfprintf(stderr, msg, ap);
(void)fprintf(stderr, "\n");
va_end(ap);
exit(1);
}
void
#ifdef __STDC__
warning(int n, ...)
#else
warning(n, va_alist)
int n;
va_dcl
#endif
{
va_list ap;
#ifdef __STDC__
va_start(ap, n);
#else
va_start(ap);
#endif
vwarning(n, ap);
va_end(ap);
}
void
#ifdef __STDC__
message(int n, ...)
#else
message(n, va_alist)
int n;
va_dcl
#endif
{
va_list ap;
const char *fn;
#ifdef __STDC__
va_start(ap, n);
#else
va_start(ap);
#endif
fn = basename(curr_pos.p_file);
(void)printf("%s:%d: ", fn, curr_pos.p_line);
(void)vprintf(msgs[n], ap);
(void)printf("\n");
va_end(ap);
}
int
#ifdef __STDC__
gnuism(int n, ...)
#else
gnuism(n, va_alist)
int n;
va_dcl
#endif
{
va_list ap;
int msg;
#ifdef __STDC__
va_start(ap, n);
#else
va_start(ap);
#endif
if (sflag && !gflag) {
verror(n, ap);
msg = 1;
} else if (!sflag && gflag) {
msg = 0;
} else {
vwarning(n, ap);
msg = 1;
}
va_end(ap);
return (msg);
}
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