Changes in driver/cc1.cc [2c60af75:6dc19544]
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driver/cc1.cc (modified) (15 diffs)
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driver/cc1.cc
r2c60af75 r6dc19544 10 10 // Created On : Fri Aug 26 14:23:51 2005 11 11 // Last Modified By : Peter A. Buhr 12 // Last Modified On : Thu Aug 22 22:29:52 201913 // Update Count : 32812 // Last Modified On : Mon Sep 3 16:57:05 2018 13 // Update Count : 125 14 14 // 15 15 … … 19 19 #include <string> 20 20 using std::string; 21 #include <algorithm> // find22 21 #include <cstdio> // stderr, stdout, perror, fprintf 23 22 #include <cstdlib> // getenv, exit, mkstemp … … 31 30 32 31 33 static string installlibdir( CFA_LIBDIR ); // fixed location of cc1 and cfa-cpp commands when installed 34 static string compiler_path( CFA_BACKEND_CC ); // path/name of C compiler 35 static bool CFA_flag = false; // -CFA flag 36 static string o_file; 37 38 static bool prefix( const string & arg, const string & pre ) { 32 string compiler_name( CFA_BACKEND_CC ); // path/name of C compiler 33 34 string D__GCC_BPREFIX__( "-D__GCC_BPREFIX__=" ); 35 string D__CFA_FLAGPREFIX__( "-D__CFA_FLAG__=" ); 36 37 char tmpname[] = P_tmpdir "/CFAXXXXXX"; 38 int tmpfilefd = -1; 39 40 41 bool prefix( string arg, string pre ) { 39 42 return arg.substr( 0, pre.size() ) == pre; 40 43 } // prefix 41 44 42 static void suffix( const string & arg, const char * args[], int & nargs ) { 43 enum { NumSuffixes = 3};44 static const string suffixes[NumSuffixes] = { "cfa", "hfa", "ifa" }; 45 45 enum { NumSuffixes = 2 }; 46 const string suffixes[NumSuffixes] = { "cfa", "hfa", }; 47 48 void suffix( string arg, const char * args[], int & nargs ) { 46 49 //std::cerr << arg << std::endl; 47 50 size_t dot = arg.find_last_of( "." ); 48 51 //std::cerr << dot << " " << (dot != string::npos ? arg.substr( dot + 1 ) : "fred" ) << std::endl; 49 52 if ( dot == string::npos ) return; 50 const string * end = suffixes + NumSuffixes; 51 if ( std::find( suffixes, end, arg.substr( dot + 1 ) ) != end ) { 52 args[nargs++] = "-x"; 53 args[nargs++] = "c"; 54 } // if 53 string sx = arg.substr( dot + 1 ); 54 for ( int i = 0; i < NumSuffixes; i += 1 ) { 55 if ( sx == suffixes[i] ) { 56 args[nargs] = "-x"; 57 nargs += 1; 58 args[nargs] = "c"; 59 nargs += 1; 60 return; 61 } // if 62 } // for 55 63 } // suffix 56 64 57 65 58 static string __CFA_FLAGPREFIX__( "__CFA_FLAG" ); 59 60 static void checkEnv1( const char * args[], int & nargs ) { // stage 1 61 extern char ** environ; 62 63 for ( int i = 0; environ[i]; i += 1 ) { 64 string arg = environ[i]; 66 void checkEnv( const char * args[], int & nargs ) { 67 char *value; 68 69 value = getenv( "__CFA_COMPILER__" ); 70 if ( value != NULL ) { 71 compiler_name = value; 65 72 #ifdef __DEBUG_H__ 66 cerr << "env arg:\"" << arg<< "\"" << endl;73 cerr << "env arg:\"" << compiler_name << "\"" << endl; 67 74 #endif // __DEBUG_H__ 68 69 if ( prefix( arg, __CFA_FLAGPREFIX__ ) ) { 70 string val = arg.substr( __CFA_FLAGPREFIX__.size() + 4 ); 71 if ( prefix( val, "-compiler=" ) ) { 72 compiler_path = val.substr( 10 ); 73 } // if 74 } // if 75 } // for 76 } // checkEnv1 77 78 79 static void checkEnv2( const char * args[], int & nargs ) { // stage 2 80 extern char ** environ; 81 82 for ( int i = 0; environ[i]; i += 1 ) { 83 string arg = environ[i]; 75 } // if 76 77 value = getenv( "__GCC_MACHINE__" ); 78 if ( value != NULL ) { 79 args[nargs] = ( *new string( value ) ).c_str(); // pass the argument along 84 80 #ifdef __DEBUG_H__ 85 cerr << "env arg:\"" << arg << "\"" << endl;81 cerr << "env arg:\"" << args[nargs] << "\"" << endl; 86 82 #endif // __DEBUG_H__ 87 88 if ( prefix( arg, __CFA_FLAGPREFIX__ ) ) { 89 string val = arg.substr( __CFA_FLAGPREFIX__.size() + 4 ); 90 if ( prefix( val, "-compiler=" ) ) { 91 compiler_path = val.substr( 10 ); 92 } else if ( prefix( val, "-CFA" ) ) { 93 CFA_flag = true; 94 } else if ( prefix( val, "-o=" ) ) { // output file for -CFA 95 o_file = val.substr( 3 ); 96 } else { 97 args[nargs++] = ( *new string( arg.substr( __CFA_FLAGPREFIX__.size() + 4 ) ) ).c_str(); 98 } // if 99 } // if 100 } // for 101 } // checkEnv2 102 103 104 static char tmpname[] = P_tmpdir "/CFAXXXXXX.i"; 105 static int tmpfilefd = -1; 106 static bool startrm = false; 107 108 static void rmtmpfile() { 109 startrm = true; // RACE with C-c C-c 83 nargs += 1; 84 } // if 85 86 value = getenv( "__GCC_VERSION__" ); 87 if ( value != NULL ) { 88 args[nargs] = ( *new string( value ) ).c_str(); // pass the argument along 89 #ifdef __DEBUG_H__ 90 cerr << "env arg:\"" << args[nargs] << "\"" << endl; 91 #endif // __DEBUG_H__ 92 nargs += 1; 93 } // if 94 } // checkEnv 95 96 97 void rmtmpfile() { 110 98 if ( unlink( tmpname ) == -1 ) { // remove tmpname 111 perror ( "C C1 Translator error: failed, unlink" );112 exit( EXIT_FAILURE ); 113 } // if 114 tmpfilefd = -1; // mark removed99 perror ( "CFA Translator error: cpp failed" ); 100 exit( EXIT_FAILURE ); 101 } // if 102 tmpfilefd = -1; // mark closed 115 103 } // rmtmpfile 116 104 117 105 118 static void sigTermHandler( int ) { // C-c C-c 119 if ( startrm ) return; // return and let rmtmpfile finish, and then program finishes 120 106 void sigTermHandler( __attribute__((unused)) int signal ) { 121 107 if ( tmpfilefd != -1 ) { // RACE, file created ? 122 rmtmpfile(); // remove tmpname123 } // if124 exit( EXIT_FAILURE ); // terminate108 rmtmpfile(); // remove 109 exit( EXIT_FAILURE ); // terminate 110 } // if 125 111 } // sigTermHandler 126 112 127 113 128 staticvoid Stage1( const int argc, const char * const argv[] ) {114 void Stage1( const int argc, const char * const argv[] ) { 129 115 int code; 116 130 117 string arg; 118 string bprefix; 131 119 132 120 const char *cpp_in = NULL; 133 121 const char *cpp_out = NULL; 134 122 123 bool CFA_flag = false; 135 124 bool cpp_flag = false; 136 bool o_flag = false;125 const char *o_name = NULL; 137 126 138 127 const char *args[argc + 100]; // leave space for 100 additional cpp command line values 139 128 int nargs = 1; // number of arguments in args list; 0 => command name 129 const char *cargs[20]; // leave space for 20 additional cfa-cpp command line values 130 int ncargs = 1; // 0 => command name 131 132 signal( SIGINT, sigTermHandler ); 133 signal( SIGTERM, sigTermHandler ); 140 134 141 135 #ifdef __DEBUG_H__ 142 136 cerr << "Stage1" << endl; 143 137 #endif // __DEBUG_H__ 144 checkEnv 1( args, nargs ); // arguments passed via environment variables138 checkEnv( args, nargs ); // arguments passed via environment variables 145 139 #ifdef __DEBUG_H__ 146 140 for ( int i = 1; i < argc; i += 1 ) { … … 174 168 i += 1; // and the argument 175 169 cpp_flag = true; 176 177 // all other flags 170 } else if ( arg == "-D__CFA_PREPROCESS__" ) { 171 CFA_flag = true; 172 } else if ( arg == "-D" && string( argv[i + 1] ) == "__CFA_PREPROCESS__" ) { 173 i += 1; // and the argument 174 CFA_flag = true; 175 } else if ( prefix( arg, D__CFA_FLAGPREFIX__ ) ) { 176 cargs[ncargs] = ( *new string( arg.substr( D__CFA_FLAGPREFIX__.size() ) ) ).c_str(); 177 ncargs += 1; 178 } else if ( arg == "-D" && prefix( argv[i + 1], D__CFA_FLAGPREFIX__.substr(2) ) ) { 179 cargs[ncargs] = ( *new string( string( argv[i + 1] ).substr( D__CFA_FLAGPREFIX__.size() - 2 ) ) ).c_str(); 180 ncargs += 1; 181 i += 1; // and the argument 182 } else if ( prefix( arg, D__GCC_BPREFIX__ ) ) { 183 bprefix = arg.substr( D__GCC_BPREFIX__.size() ); 184 } else if ( arg == "-D" && prefix( argv[i + 1], D__GCC_BPREFIX__.substr(2) ) ) { 185 bprefix = string( argv[i + 1] ).substr( D__GCC_BPREFIX__.size() - 2 ); 186 i += 1; // and the argument 187 188 // all other flags 178 189 179 190 } else if ( arg == "-o" ) { 180 191 i += 1; 181 o_flag = true; 182 cpp_out = argv[i]; 192 o_name = argv[i]; 183 193 } else { 184 args[nargs++] = argv[i]; // pass the flag along 194 args[nargs] = argv[i]; // pass the flag along 195 nargs += 1; 185 196 // CPP flags with an argument 186 197 if ( arg == "-D" || arg == "-U" || arg == "-I" || arg == "-MF" || arg == "-MT" || arg == "-MQ" || … … 188 199 arg == "-iwithprefix" || arg == "-iwithprefixbefore" || arg == "-isystem" || arg == "-isysroot" ) { 189 200 i += 1; 190 args[nargs++] = argv[i]; // pass the argument along 201 args[nargs] = argv[i]; // pass the argument along 202 nargs += 1; 191 203 #ifdef __DEBUG_H__ 192 204 cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl; 193 205 #endif // __DEBUG_H__ 194 206 } else if ( arg == "-MD" || arg == "-MMD" ) { 195 args[nargs++] = "-MF"; // insert before file 207 args[nargs] = "-MF"; // insert before file 208 nargs += 1; 196 209 i += 1; 197 args[nargs++] = argv[i]; // pass the argument along 210 args[nargs] = argv[i]; // pass the argument along 211 nargs += 1; 198 212 #ifdef __DEBUG_H__ 199 213 cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl; … … 238 252 // output or -o. The call to cfa has a -E so it does not have to be added to the argument list. 239 253 240 args[0] = compiler_ path.c_str();254 args[0] = compiler_name.c_str(); 241 255 suffix( cpp_in, args, nargs ); // check suffix 242 args[nargs++] = cpp_in; 243 if ( o_flag ) { // location for output 244 args[nargs++] = "-o"; 256 args[nargs] = cpp_in; 257 nargs += 1; 258 if ( o_name != NULL ) { // location for output 259 args[nargs] = "-o"; 260 nargs += 1; 261 args[nargs] = o_name; 262 nargs += 1; 245 263 } // if 246 args[nargs++] = cpp_out;247 264 args[nargs] = NULL; // terminate argument list 248 265 … … 256 273 257 274 execvp( args[0], (char *const *)args ); // should not return 258 perror( "CC1 Translator error: stage 1, execvp" ); 259 exit( EXIT_FAILURE ); 260 } // if 261 262 // Run the C preprocessor and save the output in the given file. 275 perror( "CFA Translator error: cpp level, execvp" ); 276 exit( EXIT_FAILURE ); 277 } // if 278 279 // Create a temporary file to store output of the C preprocessor. 280 281 tmpfilefd = mkstemp( tmpname ); 282 if ( tmpfilefd == -1 ) { 283 perror( "CFA Translator error: cpp level, mkstemp" ); 284 exit( EXIT_FAILURE ); 285 } // if 286 287 #ifdef __DEBUG_H__ 288 cerr << "tmpname:" << tmpname << " tmpfilefd:" << tmpfilefd << endl; 289 #endif // __DEBUG_H__ 290 291 // Run the C preprocessor and save the output in tmpfile. 263 292 264 293 if ( fork() == 0 ) { // child process ? … … 266 295 // an error (e.g., cannot find include file). Whereas, output is always generated, even when there is an error, 267 296 // when cpp writes to stdout. Hence, stdout is redirected into the temporary file. 268 if ( freopen( cpp_out, "w", stdout ) == NULL ) { // redirect stdout to output file269 perror( "C C1 Translator error: stage 1, freopen" );297 if ( freopen( tmpname, "w", stdout ) == NULL ) { // redirect stdout to tmpname 298 perror( "CFA Translator error: cpp level, freopen" ); 270 299 exit( EXIT_FAILURE ); 271 300 } // if 272 301 273 args[0] = compiler_ path.c_str();302 args[0] = compiler_name.c_str(); 274 303 suffix( cpp_in, args, nargs ); // check suffix 275 args[nargs++] = cpp_in; // input to cpp 304 args[nargs] = cpp_in; // input to cpp 305 nargs += 1; 276 306 args[nargs] = NULL; // terminate argument list 277 307 … … 285 315 286 316 execvp( args[0], (char *const *)args ); // should not return 287 perror( "C C1 Translator error: stage 1, execvp" );317 perror( "CFA Translator error: cpp level, execvp" ); 288 318 exit( EXIT_FAILURE ); 289 319 } // if … … 295 325 #endif // __DEBUG_H__ 296 326 327 if ( WIFSIGNALED(code) != 0 ) { // child failed ? 328 rmtmpfile(); // remove tmpname 329 cerr << "CFA Translator error: cpp failed with signal " << WTERMSIG(code) << endl; 330 exit( EXIT_FAILURE ); 331 } // if 332 333 if ( WEXITSTATUS(code) != 0 ) { // child error ? 334 rmtmpfile(); // remove tmpname 335 exit( WEXITSTATUS( code ) ); // do not continue 336 } // if 337 338 // If -CFA flag specified, run the cfa-cpp preprocessor on the temporary file, and output is written to standard 339 // output. Otherwise, run the cfa-cpp preprocessor on the temporary file and save the result into the output file. 340 341 if ( fork() == 0 ) { // child runs CFA 342 cargs[0] = ( *new string( bprefix + "cfa-cpp" ) ).c_str(); 343 344 // Source file-name used to generate routine names containing global initializations for TU. 345 cargs[ncargs] = ( *new string( "-F" ) ).c_str(); 346 ncargs += 1; 347 cargs[ncargs] = ( *new string( string( cpp_in ) ) ).c_str(); 348 ncargs += 1; 349 350 cargs[ncargs] = tmpname; 351 ncargs += 1; 352 if ( o_name != NULL ) { 353 cargs[ncargs] = o_name; 354 ncargs += 1; 355 } else if ( ! CFA_flag ) { // run cfa-cpp ? 356 cargs[ncargs] = cpp_out; 357 ncargs += 1; 358 } // if 359 cargs[ncargs] = NULL; // terminate argument list 360 361 #ifdef __DEBUG_H__ 362 cerr << "cfa-cpp ncargs: " << (o_name ? o_name : "No -o") << " " << CFA_flag << " " << ncargs << endl; 363 for ( int i = 0; cargs[i] != NULL; i += 1 ) { 364 cerr << cargs[i] << " "; 365 } // for 366 cerr << endl; 367 #endif // __DEBUG_H__ 368 369 execvp( cargs[0], (char * const *)cargs ); // should not return 370 perror( "CFA Translator error: cpp level, execvp" ); 371 exit( EXIT_FAILURE ); 372 } // if 373 374 wait( &code ); // wait for child to finish 375 376 #ifdef __DEBUG_H__ 377 cerr << "return code from cfa-cpp:" << WEXITSTATUS(code) << endl; 378 #endif // __DEBUG_H__ 379 380 // Must unlink here because file must exist across execvp. 381 rmtmpfile(); // remove tmpname 382 297 383 if ( WIFSIGNALED(code) ) { // child failed ? 298 cerr << "C C1 Translator error: stage 1, child failed" << WTERMSIG(code) << endl;299 exit( EXIT_FAILURE ); 300 } // if 301 302 exit( WEXITSTATUS(code) ); // bad cpp result stops top-level gcc384 cerr << "CFA Translator error: cfa-cpp failed with signal " << WTERMSIG(code) << endl; 385 exit( EXIT_FAILURE ); 386 } // if 387 388 exit( WEXITSTATUS(code) ); 303 389 } // Stage1 304 390 305 391 306 static void Stage2( const int argc, const char * const * argv ) { 307 int code; 392 void Stage2( const int argc, const char * const * argv ) { 308 393 string arg; 309 394 310 const char * cpp_in = NULL; 311 const char * cpp_out = NULL; 395 const char *cpp_in = NULL; 312 396 313 397 const char *args[argc + 100]; // leave space for 100 additional cfa command line values 314 398 int nargs = 1; // number of arguments in args list; 0 => command name 315 const char *cargs[20]; // leave space for 20 additional cfa-cpp command line values316 int ncargs = 1; // 0 => command name317 399 318 400 #ifdef __DEBUG_H__ 319 401 cerr << "Stage2" << endl; 320 402 #endif // __DEBUG_H__ 321 checkEnv 2( cargs, ncargs ); // arguments passed via environment variables403 checkEnv( args, nargs ); // arguments passed via environment variables 322 404 #ifdef __DEBUG_H__ 323 405 for ( int i = 1; i < argc; i += 1 ) { … … 348 430 349 431 } else { 350 args[nargs++] = argv[i]; // pass the flag along 432 args[nargs] = argv[i]; // pass the flag along 433 nargs += 1; 351 434 if ( arg == "-o" ) { 352 435 i += 1; 353 cpp_out = argv[i];354 args[nargs++] = argv[i]; // pass the argument along436 args[nargs] = argv[i]; // pass the argument along 437 nargs += 1; 355 438 #ifdef __DEBUG_H__ 356 439 cerr << "arg:\"" << argv[i] << "\"" << endl; … … 364 447 cerr << "cpp_in:\"" << cpp_in << "\"" << endl; 365 448 #endif // __DEBUG_H__ 366 } else if ( cpp_out == NULL ) {367 cpp_out = argv[i];368 #ifdef __DEBUG_H__369 cerr << "cpp_out:\"" << cpp_out << "\""<< endl;370 #endif // __DEBUG_H__371 449 } else { 372 450 cerr << "Usage: " << argv[0] << " input-file [output-file] [options]" << endl; … … 376 454 } // for 377 455 378 // Create a temporary file, if needed, to store output of the cfa-cpp preprocessor. Cannot be created in forked379 // process because variables tmpname and tmpfilefd are cloned.380 381 if ( ! CFA_flag ) { // run cfa-cpp ?382 tmpfilefd = mkstemps( tmpname, 2 );383 if ( tmpfilefd == -1 ) {384 perror( "CC1 Translator error: stage 2, mkstemp" );385 exit( EXIT_FAILURE );386 } // if387 388 #ifdef __DEBUG_H__389 cerr << "tmpname:" << tmpname << " tmpfilefd:" << tmpfilefd << endl;390 #endif // __DEBUG_H__391 } // if392 393 // If -CFA flag specified, run the cfa-cpp preprocessor on the temporary file, and output is written to standard394 // output. Otherwise, run the cfa-cpp preprocessor on the temporary file and save the result into the output file.395 396 if ( fork() == 0 ) { // child runs CFA397 cargs[0] = ( *new string( installlibdir + "cfa-cpp" ) ).c_str();398 399 cargs[ncargs++] = cpp_in;400 401 if ( CFA_flag ) { // run cfa-cpp ?402 if ( o_file.size() != 0 ) { // location for output403 cargs[ncargs++] = ( *new string( o_file.c_str() ) ).c_str();404 } // if405 } else {406 cargs[ncargs++] = tmpname;407 } // if408 cargs[ncargs] = NULL; // terminate argument list409 410 #ifdef __DEBUG_H__411 for ( int i = 0; cargs[i] != NULL; i += 1 ) {412 cerr << cargs[i] << " ";413 } // for414 cerr << endl;415 #endif // __DEBUG_H__416 417 execvp( cargs[0], (char * const *)cargs ); // should not return418 perror( "CC1 Translator error: stage 2, execvp" );419 exit( EXIT_FAILURE );420 } // if421 422 wait( &code ); // wait for child to finish423 424 if ( WIFSIGNALED(code) ) { // child failed ?425 rmtmpfile(); // remove tmpname426 cerr << "CC1 Translator error: stage 2, child failed " << WTERMSIG(code) << endl;427 exit( EXIT_FAILURE );428 } // if429 430 if ( CFA_flag ) { // no tmpfile created431 exit( WEXITSTATUS( code ) ); // stop regardless of success or failure432 } // if433 434 #ifdef __DEBUG_H__435 cerr << "return code from cfa-cpp:" << WEXITSTATUS(code) << endl;436 #endif // __DEBUG_H__437 438 if ( WEXITSTATUS(code) ) { // child error ?439 rmtmpfile(); // remove tmpname440 exit( WEXITSTATUS( code ) ); // do not continue441 } // if442 443 456 #ifdef __DEBUG_H__ 444 457 cerr << "args:"; … … 450 463 #endif // __DEBUG_H__ 451 464 452 if ( fork() == 0 ) { // child runs CFA 453 args[0] = compiler_path.c_str(); 454 args[nargs++] = "-S"; // only compile and put assembler output in specified file 455 args[nargs++] = tmpname; 456 args[nargs] = NULL; // terminate argument list 457 458 #ifdef __DEBUG_H__ 459 cerr << "stage2 nargs: " << nargs << endl; 460 for ( int i = 0; args[i] != NULL; i += 1 ) { 461 cerr << args[i] << " "; 462 } // for 463 cerr << endl; 464 #endif // __DEBUG_H__ 465 466 execvp( args[0], (char * const *)args ); // should not return 467 perror( "CC1 Translator error: stage 2, execvp" ); 468 exit( EXIT_FAILURE ); // tell gcc not to go any further 469 } // if 470 471 wait( &code ); // wait for child to finish 472 473 if ( WIFSIGNALED(code) ) { // child failed ? 474 rmtmpfile(); // remove tmpname 475 cerr << "CC1 Translator error: stage 2, child failed " << WTERMSIG(code) << endl; 476 exit( EXIT_FAILURE ); 477 } // if 478 479 #ifdef __DEBUG_H__ 480 cerr << "return code from gcc cc1:" << WEXITSTATUS(code) << endl; 481 #endif // __DEBUG_H__ 482 483 rmtmpfile(); // remove tmpname 484 exit( WEXITSTATUS( code ) ); // stop regardless of success or failure 465 args[0] = compiler_name.c_str(); 466 args[nargs] = "-S"; // only compile and put assembler output in specified file 467 nargs += 1; 468 args[nargs] = cpp_in; 469 nargs += 1; 470 args[nargs] = NULL; // terminate argument list 471 472 #ifdef __DEBUG_H__ 473 cerr << "stage2 nargs: " << nargs << endl; 474 for ( int i = 0; args[i] != NULL; i += 1 ) { 475 cerr << args[i] << " "; 476 } // for 477 cerr << endl; 478 #endif // __DEBUG_H__ 479 480 execvp( args[0], (char * const *)args ); // should not return 481 perror( "CFA Translator error: cpp level, execvp" ); 482 exit( EXIT_FAILURE ); // tell gcc not to go any further 485 483 } // Stage2 486 484 487 488 // This program is called twice because of the -no-integrated-cpp. The calls are differentiated by the first489 // command-line argument. The first call replaces the traditional cpp pass to preprocess the C program. The second call490 // is to the compiler, which is broken into two steps: preprocess again with cfa-cpp and then call gcc to compile the491 // doubly preprocessed program.492 485 493 486 int main( const int argc, const char * const argv[], __attribute__((unused)) const char * const env[] ) { … … 497 490 } // for 498 491 #endif // __DEBUG_H__ 499 500 signal( SIGINT, sigTermHandler );501 signal( SIGTERM, sigTermHandler );502 492 503 493 string arg = argv[1];
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