| 1 |
#include <string.h> |
| 2 |
|
| 3 |
#include "error.h" |
| 4 |
|
| 5 |
#define ERROR_REPORTER_TREE_ACTIVE |
| 6 |
|
| 7 |
#ifdef ERROR_REPORTER_TREE_ACTIVE |
| 8 |
# include "ascMalloc.h" |
| 9 |
# include "ascPanic.h" |
| 10 |
#endif |
| 11 |
|
| 12 |
/** |
| 13 |
Global variable which stores the pointer to the callback |
| 14 |
function being used. |
| 15 |
*/ |
| 16 |
static error_reporter_callback_t g_error_reporter_callback; |
| 17 |
|
| 18 |
/** |
| 19 |
Global variable which holds cached error info for |
| 20 |
later output |
| 21 |
*/ |
| 22 |
static error_reporter_meta_t g_error_reporter_cache; |
| 23 |
|
| 24 |
#ifdef ERROR_REPORTER_TREE_ACTIVE |
| 25 |
static error_reporter_meta_t *error_reporter_meta_new(){ |
| 26 |
error_reporter_meta_t *e; |
| 27 |
e = ASC_NEW(error_reporter_meta_t); |
| 28 |
e->sev = ASC_USER_SUCCESS; |
| 29 |
e->iscaching = 0; |
| 30 |
e->filename = NULL; |
| 31 |
e->func = NULL; |
| 32 |
e->line = 0; |
| 33 |
e->msg[0] = '\0'; |
| 34 |
return e; |
| 35 |
} |
| 36 |
#endif /* ERROR_REPORTER_TREE_ACTIVE */ |
| 37 |
|
| 38 |
/** |
| 39 |
XTERM colour codes used to distinguish between errors of different types. |
| 40 |
*/ |
| 41 |
# define ERR_RED "31;1" |
| 42 |
# define ERR_GRN "32;2" |
| 43 |
# define ERR_BLU "34;1" |
| 44 |
# define ERR_BRN "33;1" |
| 45 |
# define ERR_BOLD "1" |
| 46 |
|
| 47 |
/** |
| 48 |
Default error reporter. To use this error reporter, set |
| 49 |
the callback pointer to NULL. |
| 50 |
*/ |
| 51 |
int error_reporter_default_callback(ERROR_REPORTER_CALLBACK_ARGS){ |
| 52 |
char *sevmsg=""; |
| 53 |
char *color=NULL; |
| 54 |
char *endtxt="\n"; |
| 55 |
int res=0; |
| 56 |
switch(sev){ |
| 57 |
case ASC_PROG_FATAL: color=ERR_RED; sevmsg = "PROGRAM FATAL ERROR: "; break; |
| 58 |
case ASC_PROG_ERROR: |
| 59 |
color=ERR_RED; sevmsg = "PROGRAM ERROR: "; |
| 60 |
break; |
| 61 |
case ASC_PROG_WARNING: color=ERR_BOLD;sevmsg = "PROGRAM WARNING: "; break; |
| 62 |
case ASC_PROG_NOTE: color=ERR_GRN; endtxt=""; break; /* default, keep unembellished for now */ |
| 63 |
case ASC_USER_ERROR: color=ERR_RED; sevmsg = "ERROR: "; break; |
| 64 |
case ASC_USER_WARNING: color=ERR_BRN; sevmsg = "WARNING: "; break; |
| 65 |
case ASC_USER_NOTE: sevmsg = "NOTE: "; break; |
| 66 |
case ASC_USER_SUCCESS: color=ERR_GRN; sevmsg = "SUCCESS: "; break; |
| 67 |
} |
| 68 |
|
| 69 |
color_on(ASCERR,color); |
| 70 |
res = ASC_FPRINTF(ASCERR,"%s",sevmsg); |
| 71 |
color_off(ASCERR); |
| 72 |
|
| 73 |
if(filename!=NULL){ |
| 74 |
res += ASC_FPRINTF(ASCERR,"%s:",filename); |
| 75 |
} |
| 76 |
if(line!=0){ |
| 77 |
res += ASC_FPRINTF(ASCERR,"%d:",line); |
| 78 |
} |
| 79 |
if(funcname!=NULL){ |
| 80 |
res += ASC_FPRINTF(ASCERR,"%s:",funcname); |
| 81 |
} |
| 82 |
if ((filename!=NULL) || (line!=0) || (funcname!=NULL)){ |
| 83 |
res += ASC_FPRINTF(ASCERR," "); |
| 84 |
} |
| 85 |
|
| 86 |
res += ASC_VFPRINTF(ASCERR,fmt,args); |
| 87 |
res += ASC_FPRINTF(ASCERR,"%s",endtxt); |
| 88 |
|
| 89 |
return res; |
| 90 |
} |
| 91 |
|
| 92 |
/*--------------------------------------------------------------------------- |
| 93 |
ERROR REPORTER TREE (BRANCHABLE ERROR STACK) FUNCTIONALITY |
| 94 |
*/ |
| 95 |
|
| 96 |
#ifdef ERROR_REPORTER_TREE_ACTIVE |
| 97 |
|
| 98 |
static error_reporter_tree_t *g_error_reporter_tree = NULL; |
| 99 |
static error_reporter_tree_t *g_error_reporter_tree_current = NULL; |
| 100 |
|
| 101 |
# define TREECURRENT g_error_reporter_tree_current |
| 102 |
# define TREE g_error_reporter_tree |
| 103 |
|
| 104 |
static int error_reporter_tree_write(error_reporter_tree_t *t); |
| 105 |
static void error_reporter_tree_free(error_reporter_tree_t *t); |
| 106 |
|
| 107 |
static error_reporter_tree_t *error_reporter_tree_new(){ |
| 108 |
error_reporter_tree_t *tnew = ASC_NEW(error_reporter_tree_t); |
| 109 |
tnew->next = NULL; |
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tnew->head = NULL; |
| 111 |
tnew->tail = NULL; |
| 112 |
tnew->err = NULL; |
| 113 |
return tnew; |
| 114 |
} |
| 115 |
|
| 116 |
int error_reporter_tree_start(){ |
| 117 |
error_reporter_tree_t *tnew; |
| 118 |
tnew = error_reporter_tree_new(); |
| 119 |
|
| 120 |
fprintf(stderr,"TREE = %p",TREE); |
| 121 |
fprintf(stderr,"TREECURRENT = %p",TREECURRENT); |
| 122 |
|
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#if 0 |
| 124 |
if(TREE != NULL && TREECURRENT == NULL){ |
| 125 |
CONSOLE_DEBUG("CALLED WITH NULL TREECURRENT BUT NON-NULL TREE"); |
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error_reporter_tree_write(TREE); |
| 127 |
error_reporter_tree_free(TREE); |
| 128 |
TREE = NULL; |
| 129 |
} |
| 130 |
#endif |
| 131 |
|
| 132 |
if(TREE == NULL){ |
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/* CONSOLE_DEBUG("CREATING ROOT"); */ |
| 134 |
/* we're creating the root */ |
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tnew->parent = NULL; |
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TREE = tnew; |
| 137 |
TREECURRENT = tnew; |
| 138 |
/* CONSOLE_DEBUG("TREECURRENT = %p",TREECURRENT); */ |
| 139 |
}else{ |
| 140 |
asc_assert(TREECURRENT != NULL); |
| 141 |
/* CONSOLE_DEBUG("CREATING SUBTREE"); */ |
| 142 |
if(TREECURRENT->head == NULL){ |
| 143 |
/* if the current tree has no elements, add it as the head */ |
| 144 |
TREECURRENT->head = tnew; |
| 145 |
}else{ |
| 146 |
/* link the new tree to the last in the child list */ |
| 147 |
TREECURRENT->tail->next = tnew; |
| 148 |
} |
| 149 |
/* update the tail of the list */ |
| 150 |
TREECURRENT->tail = tnew; |
| 151 |
|
| 152 |
/* now switch the context to the sub-tree */ |
| 153 |
tnew->parent = TREECURRENT; |
| 154 |
/* CONSOLE_DEBUG("SET TREECURRENT TO %p",TREECURRENT); */ |
| 155 |
TREECURRENT = tnew; |
| 156 |
} |
| 157 |
return 0; |
| 158 |
} |
| 159 |
|
| 160 |
int error_reporter_tree_end(){ |
| 161 |
CONSOLE_DEBUG("TREE END"); |
| 162 |
if(!TREECURRENT){ |
| 163 |
ERROR_REPORTER_HERE(ASC_PROG_ERR,"'end' without TREECURRENT set"); |
| 164 |
return 1; |
| 165 |
} |
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TREECURRENT = TREECURRENT->parent; |
| 167 |
/* CONSOLE_DEBUG("SET TREECURRENT TO %p",TREECURRENT); */ |
| 168 |
return 0; |
| 169 |
} |
| 170 |
|
| 171 |
static void error_reporter_tree_free(error_reporter_tree_t *t){ |
| 172 |
if(t->head){ |
| 173 |
error_reporter_tree_free(t->head); |
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} |
| 175 |
if(t->next){ |
| 176 |
error_reporter_tree_free(t->next); |
| 177 |
} |
| 178 |
if(t->err)ASC_FREE(t->err); |
| 179 |
ASC_FREE(t); |
| 180 |
} |
| 181 |
|
| 182 |
void error_reporter_tree_clear(){ |
| 183 |
/* recursively free anything beneath the TREECURRENT node, return to the parent context */ |
| 184 |
error_reporter_tree_t *t; |
| 185 |
if(!TREECURRENT){ |
| 186 |
/* CONSOLE_DEBUG("NOTHING TO CLEAR!"); */ |
| 187 |
return; |
| 188 |
} |
| 189 |
if(TREECURRENT->parent){ |
| 190 |
t = TREECURRENT->parent; |
| 191 |
}else{ |
| 192 |
TREE = NULL; |
| 193 |
t = NULL; |
| 194 |
} |
| 195 |
error_reporter_tree_free(TREECURRENT); |
| 196 |
TREECURRENT = t; |
| 197 |
} |
| 198 |
|
| 199 |
static int error_reporter_tree_match_sev(error_reporter_tree_t *t, unsigned match){ |
| 200 |
if(t->err && (t->err->sev & match)){ |
| 201 |
/* CONSOLE_DEBUG("SEVERITY MATCH FOR t = %p",t); */ |
| 202 |
return 1; |
| 203 |
} |
| 204 |
if(t->next && error_reporter_tree_match_sev(t->next, match)){ |
| 205 |
/* CONSOLE_DEBUG("SEVERITY MATCH IN 'next' FOR t = %p",t); */ |
| 206 |
return 1; |
| 207 |
} |
| 208 |
if(t->head && error_reporter_tree_match_sev(t->head, match)){ |
| 209 |
/* CONSOLE_DEBUG("SEVERITTY MATCH IN 'head' FOR t = %p",t); */ |
| 210 |
return 1; |
| 211 |
} |
| 212 |
/* CONSOLE_DEBUG("NO MATCH FOR t = %p",t); */ |
| 213 |
return 0; |
| 214 |
} |
| 215 |
|
| 216 |
/** |
| 217 |
traverse the tree, looking for ASC_PROG_ERR, ASC_USER_ERROR, or ASC_PROG_FATAL |
| 218 |
@return 1 if errors found |
| 219 |
*/ |
| 220 |
int error_reporter_tree_has_error(){ |
| 221 |
int res; |
| 222 |
if(TREECURRENT){ |
| 223 |
res = error_reporter_tree_match_sev(TREECURRENT,ASC_ERR_ERR); |
| 224 |
if(res){ |
| 225 |
/* CONSOLE_DEBUG("ERROR(S) FOUND IN TREECURRENT %p",TREECURRENT); */ |
| 226 |
} |
| 227 |
return res; |
| 228 |
}else{ |
| 229 |
CONSOLE_DEBUG("NO TREE FOUND"); |
| 230 |
return 0; |
| 231 |
} |
| 232 |
} |
| 233 |
|
| 234 |
static int error_reporter_tree_write(error_reporter_tree_t *t){ |
| 235 |
int res = 0; |
| 236 |
|
| 237 |
asc_assert(TREE==NULL); /* else recursive calls will occur */ |
| 238 |
|
| 239 |
if(t->err){ |
| 240 |
res += error_reporter(t->err->sev, t->err->filename, t->err->line, t->err->func, t->err->msg); |
| 241 |
}else{ |
| 242 |
/* CONSOLE_DEBUG("TREE HAS NO TOP-LEVEL ERROR"); */ |
| 243 |
} |
| 244 |
|
| 245 |
if(t->head){ |
| 246 |
res += error_reporter_tree_write(t->head); |
| 247 |
} |
| 248 |
if(t->next){ |
| 249 |
res += error_reporter_tree_write(t->next); |
| 250 |
} |
| 251 |
return res; |
| 252 |
} |
| 253 |
|
| 254 |
#else /* ERROR_REPORTER_TREE_ACTIVE */ |
| 255 |
int error_reporter_tree_start(){ |
| 256 |
ERROR_REPORTER_HERE(ASC_PROG_WARNING,"Error reporter 'tree' turned off at compile time"); |
| 257 |
return 0; |
| 258 |
} |
| 259 |
int error_reporter_tree_end(){return 0;} |
| 260 |
void error_reporter_tree_clear(){} |
| 261 |
int error_reporter_tree_has_error(){ |
| 262 |
ERROR_REPORTER_HERE(ASC_PROG_WARNING,"Attempt to check 'tree_has_error' when 'tree' turned off at compile time"); |
| 263 |
return 0; |
| 264 |
} |
| 265 |
#endif /* ERROR_REPORTER_TREE_ACTIVE */ |
| 266 |
|
| 267 |
/*-------------------------- |
| 268 |
REALLY WHERE THE REPORTING HAPPENS |
| 269 |
*/ |
| 270 |
|
| 271 |
int |
| 272 |
va_error_reporter( |
| 273 |
const error_severity_t sev |
| 274 |
, const char *errfile |
| 275 |
, const int errline |
| 276 |
, const char *errfunc |
| 277 |
, const char *fmt |
| 278 |
, va_list args |
| 279 |
){ |
| 280 |
int res; |
| 281 |
|
| 282 |
#ifdef ERROR_REPORTER_TREE_ACTIVE |
| 283 |
error_reporter_tree_t *t; |
| 284 |
if(sev != ASC_PROG_FATAL){ |
| 285 |
if(TREECURRENT){ |
| 286 |
/* add the error to the tree, don't output anything now */ |
| 287 |
t = error_reporter_tree_new(); |
| 288 |
t->err = error_reporter_meta_new(); |
| 289 |
res = vsnprintf(t->err->msg,ERROR_REPORTER_MAX_MSG,fmt,args); |
| 290 |
t->err->filename = errfile; |
| 291 |
t->err->func = errfunc; |
| 292 |
t->err->line = errline; |
| 293 |
t->err->sev = sev; |
| 294 |
if(!TREECURRENT->head){ |
| 295 |
TREECURRENT->head = TREECURRENT->tail = t; |
| 296 |
}else{ |
| 297 |
TREECURRENT->tail->next = t; |
| 298 |
TREECURRENT->tail = t; |
| 299 |
} |
| 300 |
/* CONSOLE_DEBUG("Message (%d chars) added to tree",res); */ |
| 301 |
return res; |
| 302 |
}else if(TREE){ |
| 303 |
/* flush the tree before outputting current message */ |
| 304 |
/* CONSOLE_DEBUG("WRITING OUT TREE CONTENTS"); */ |
| 305 |
t = TREE; |
| 306 |
TREE = NULL; |
| 307 |
error_reporter_tree_write(t); |
| 308 |
CONSOLE_DEBUG("DONE WRITING TREE"); |
| 309 |
TREECURRENT = t; |
| 310 |
error_reporter_tree_clear(); |
| 311 |
/* CONSOLE_DEBUG("DONE FREEING TREE"); |
| 312 |
CONSOLE_DEBUG("TREE = %p",TREE); |
| 313 |
CONSOLE_DEBUG("TREECURRENT = %p",TREECURRENT); */ |
| 314 |
} |
| 315 |
} |
| 316 |
#endif |
| 317 |
|
| 318 |
if(g_error_reporter_callback==NULL){ |
| 319 |
/* fprintf(stderr,"CALLING VFPRINTF\n"); */ |
| 320 |
res = error_reporter_default_callback(sev,errfile,errline,errfunc,fmt,args); |
| 321 |
}else{ |
| 322 |
/* fprintf(stderr,"CALLING G_ERROR_REPORTER_CALLBACK\n"); */ |
| 323 |
res = g_error_reporter_callback(sev,errfile,errline,errfunc,fmt,args); |
| 324 |
} |
| 325 |
|
| 326 |
return res; |
| 327 |
} |
| 328 |
|
| 329 |
/*---------------------------- |
| 330 |
DROP-IN replacements for stdio.h / ascPrint.h |
| 331 |
*/ |
| 332 |
|
| 333 |
int vfprintf_error_reporter(FILE *file, const char *fmt, va_list args){ |
| 334 |
char *msg; |
| 335 |
int len; |
| 336 |
int res; |
| 337 |
if(file==stderr){ |
| 338 |
if(g_error_reporter_cache.iscaching){ |
| 339 |
msg = g_error_reporter_cache.msg; |
| 340 |
len = strlen(msg); |
| 341 |
res = vsnprintf(msg+len,ERROR_REPORTER_MAX_MSG-len,fmt,args); |
| 342 |
if(len+res+1>=ERROR_REPORTER_MAX_MSG){ |
| 343 |
snprintf(msg+ERROR_REPORTER_MAX_MSG-16,15,"... (truncated)"); |
| 344 |
ASC_FPRINTF(stderr,"TRUNCATED MESSAGE, FULL MESSAGE FOLLOWS:\n----------START----------\n"); |
| 345 |
ASC_VFPRINTF(stderr,fmt,args); |
| 346 |
ASC_FPRINTF(stderr,"\n-----------END----------\n"); |
| 347 |
} |
| 348 |
}else{ |
| 349 |
/* Not caching: output all in one go as a ASC_PROG_NOTE */ |
| 350 |
res = va_error_reporter(ASC_PROG_NOTE,NULL,0,NULL,fmt,args); |
| 351 |
} |
| 352 |
}else{ |
| 353 |
res = ASC_VFPRINTF(file,fmt,args); |
| 354 |
} |
| 355 |
return res; |
| 356 |
} |
| 357 |
|
| 358 |
/** |
| 359 |
This function performs caching of the error text if the flag is set |
| 360 |
*/ |
| 361 |
int |
| 362 |
fprintf_error_reporter(FILE *file, const char *fmt, ...){ |
| 363 |
va_list args; |
| 364 |
int res; |
| 365 |
|
| 366 |
va_start(args,fmt); |
| 367 |
res = vfprintf_error_reporter(file,fmt,args); |
| 368 |
va_end(args); |
| 369 |
|
| 370 |
return res; |
| 371 |
} |
| 372 |
|
| 373 |
int |
| 374 |
fputc_error_reporter(int c, FILE *file){ |
| 375 |
if(file!=stderr){ |
| 376 |
return ASC_FPUTC(c,file); |
| 377 |
}else if(fprintf_error_reporter(file,"%c",c) == 1){ |
| 378 |
return c; |
| 379 |
}else{ |
| 380 |
return EOF; |
| 381 |
} |
| 382 |
} |
| 383 |
|
| 384 |
int |
| 385 |
fflush_error_reporter(FILE *file){ |
| 386 |
if(file!=stderr){ |
| 387 |
return ASC_FFLUSH(file); |
| 388 |
}else{ |
| 389 |
return error_reporter_end_flush(); |
| 390 |
} |
| 391 |
} |
| 392 |
|
| 393 |
/*---------------------------- |
| 394 |
CACHING of multiple-FPRINTF error messages |
| 395 |
*/ |
| 396 |
|
| 397 |
int |
| 398 |
error_reporter_start(const error_severity_t sev, const char *filename, const int line, const char *func){ |
| 399 |
|
| 400 |
if(g_error_reporter_cache.iscaching){ |
| 401 |
error_reporter_end_flush(); |
| 402 |
} |
| 403 |
g_error_reporter_cache.iscaching = 1; |
| 404 |
*(g_error_reporter_cache.msg) = '\0'; |
| 405 |
g_error_reporter_cache.sev = sev; |
| 406 |
g_error_reporter_cache.filename = filename; |
| 407 |
g_error_reporter_cache.line = line; |
| 408 |
g_error_reporter_cache.func = func; |
| 409 |
|
| 410 |
return 1; |
| 411 |
} |
| 412 |
|
| 413 |
int |
| 414 |
error_reporter_end_flush(){ |
| 415 |
if(g_error_reporter_cache.iscaching){ |
| 416 |
error_reporter( |
| 417 |
g_error_reporter_cache.sev |
| 418 |
,g_error_reporter_cache.filename |
| 419 |
,g_error_reporter_cache.line |
| 420 |
,g_error_reporter_cache.func |
| 421 |
,g_error_reporter_cache.msg |
| 422 |
); |
| 423 |
}else{ |
| 424 |
/* CONSOLE_DEBUG("IGNORING REPEATED CALL TO error_reporter_end_flush()"); */ |
| 425 |
} |
| 426 |
g_error_reporter_cache.iscaching = 0; |
| 427 |
|
| 428 |
return 0; /* output must be compatible with fflush */ |
| 429 |
} |
| 430 |
|
| 431 |
/*-------------------------- |
| 432 |
REPORT the error |
| 433 |
*/ |
| 434 |
int |
| 435 |
error_reporter( |
| 436 |
const error_severity_t sev |
| 437 |
, const char *errfile |
| 438 |
, const int errline |
| 439 |
, const char *errfunc |
| 440 |
, const char *fmt |
| 441 |
, ... |
| 442 |
){ |
| 443 |
int res; |
| 444 |
va_list args; |
| 445 |
|
| 446 |
va_start(args,fmt); |
| 447 |
res = va_error_reporter(sev,errfile,errline,errfunc,fmt,args); |
| 448 |
va_end(args); |
| 449 |
|
| 450 |
return res; |
| 451 |
} |
| 452 |
|
| 453 |
/*------------------------- |
| 454 |
SET the callback function |
| 455 |
*/ |
| 456 |
void |
| 457 |
error_reporter_set_callback( |
| 458 |
const error_reporter_callback_t new_callback |
| 459 |
){ |
| 460 |
g_error_reporter_callback = new_callback; |
| 461 |
} |
| 462 |
|
| 463 |
/*------------------------- |
| 464 |
OPTIONAL code for systems not supporting variadic macros. |
| 465 |
You know, your system probably does support variadic macros, it's just |
| 466 |
a question of checking what your particular syntax is... |
| 467 |
*/ |
| 468 |
|
| 469 |
#ifdef NO_VARIADIC_MACROS |
| 470 |
/* Following are only required on compilers without variadic macros: */ |
| 471 |
|
| 472 |
int error_reporter_note_no_line(const char *fmt,...){ |
| 473 |
int res; |
| 474 |
va_list args; |
| 475 |
|
| 476 |
va_start(args,fmt); |
| 477 |
res = va_error_reporter(ASC_PROG_NOTE,"unknown-file",0,NULL,fmt,args); |
| 478 |
va_end(args); |
| 479 |
|
| 480 |
return res; |
| 481 |
} |
| 482 |
|
| 483 |
/** |
| 484 |
Error reporter 'here' function for compilers not supporting |
| 485 |
variadic macros. |
| 486 |
*/ |
| 487 |
ASC_DLLSPEC int error_reporter_here(const error_severity_t sev, const char *fmt,...){ |
| 488 |
int res; |
| 489 |
va_list args; |
| 490 |
|
| 491 |
va_start(args,fmt); |
| 492 |
res = va_error_reporter(sev,"unknown-file",0,NULL,fmt,args); |
| 493 |
va_end(args); |
| 494 |
|
| 495 |
return res; |
| 496 |
} |
| 497 |
|
| 498 |
|
| 499 |
/** |
| 500 |
Error reporter 'no line' function for compilers not supporting |
| 501 |
variadic macros. |
| 502 |
*/ |
| 503 |
int error_reporter_noline(const error_severity_t sev, const char *fmt,...){ |
| 504 |
int res; |
| 505 |
va_list args; |
| 506 |
|
| 507 |
va_start(args,fmt); |
| 508 |
res = va_error_reporter(sev,NULL,0,NULL,fmt,args); |
| 509 |
va_end(args); |
| 510 |
|
| 511 |
return res; |
| 512 |
} |
| 513 |
|
| 514 |
int console_debug(const char *fmt,...){ |
| 515 |
int res; |
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va_list args; |
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|
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va_start(args,fmt); |
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res = Asc_VFPrintf(ASCERR,fmt,args); |
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va_end(args); |
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|
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return res; |
| 523 |
} |
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|
| 525 |
#endif /* NO_VARIADIC_MACROS */ |
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