Changes in src/main.cc [e0bd0f9:74330e7]
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src/main.cc
re0bd0f9 r74330e7 10 10 // Created On : Fri May 15 23:12:02 2015 11 11 // Last Modified By : Peter A. Buhr 12 // Last Modified On : Thu Aug 22 13:06:18 201913 // Update Count : 6 0512 // Last Modified On : Sat Feb 8 08:33:50 2020 13 // Update Count : 633 14 14 // 15 15 … … 17 17 #include <execinfo.h> // for backtrace, backtrace_symbols 18 18 #include <getopt.h> // for no_argument, optind, geto... 19 #include <signal.h> // for signal, SIGABRT, SIGSEGV20 19 #include <cassert> // for assertf 21 20 #include <cstdio> // for fopen, FILE, fclose, stdin 22 21 #include <cstdlib> // for exit, free, abort, EXIT_F... 22 #include <csignal> // for signal, SIGABRT, SIGSEGV 23 23 #include <cstring> // for index 24 24 #include <fstream> // for ofstream … … 28 28 #include <list> // for list 29 29 #include <string> // for char_traits, operator<< 30 31 using namespace std; 32 30 33 31 34 #include "CompilationState.h" … … 53 56 #include "InitTweak/GenInit.h" // for genInit 54 57 #include "MakeLibCfa.h" // for makeLibCfa 55 #include "Parser/LinkageSpec.h" // for Spec, Cforall, Intrinsic56 58 #include "Parser/ParseNode.h" // for DeclarationNode, buildList 57 59 #include "Parser/TypedefTable.h" // for TypedefTable … … 59 61 #include "ResolvExpr/Resolver.h" // for resolve 60 62 #include "SymTab/Validate.h" // for validate 61 #include "SynTree/ TopLvalue.h" // for assertTopLvalue, clearInn...63 #include "SynTree/LinkageSpec.h" // for Spec, Cforall, Intrinsic 62 64 #include "SynTree/Declaration.h" // for Declaration 63 65 #include "SynTree/Visitor.h" // for acceptAll … … 65 67 #include "Virtual/ExpandCasts.h" // for expandCasts 66 68 67 68 using namespace std;69 69 70 70 static void NewPass( const char * const name ) { … … 96 96 DeclarationNode * parseTree = nullptr; // program parse tree 97 97 98 static std::string PreludeDirector = ""; 98 static bool waiting_for_gdb = false; // flag to set cfa-cpp to wait for gdb on start 99 100 static string PreludeDirector = ""; 99 101 100 102 static void parse_cmdline( int argc, char *argv[] ); … … 103 105 104 106 static void backtrace( int start ) { // skip first N stack frames 105 enum { Frames = 50 };107 enum { Frames = 50, }; // maximum number of stack frames 106 108 void * array[Frames]; 107 int size = ::backtrace( array, Frames );109 size_t size = ::backtrace( array, Frames ); 108 110 char ** messages = ::backtrace_symbols( array, size ); // does not demangle names 109 111 … … 112 114 113 115 // skip last 2 stack frames after main 114 for ( int i = start; i < size - 2 && messages != nullptr; i += 1 ) {116 for ( unsigned int i = start; i < size - 2 && messages != nullptr; i += 1 ) { 115 117 char * mangled_name = nullptr, * offset_begin = nullptr, * offset_end = nullptr; 116 for ( char *p = messages[i]; *p; ++p ) { // find parantheses and +offset 118 119 for ( char * p = messages[i]; *p; p += 1 ) { // find parantheses and +offset 117 120 if ( *p == '(' ) { 118 121 mangled_name = p; … … 152 155 } // backtrace 153 156 154 static void sigSegvBusHandler( int sig_num ) { 155 cerr << "*CFA runtime error* program cfa-cpp terminated with " 156 << (sig_num == SIGSEGV ? "segment fault" : "bus error") 157 << "." << endl; 157 #define SIGPARMS int sig __attribute__(( unused )), siginfo_t * sfp __attribute__(( unused )), ucontext_t * cxt __attribute__(( unused )) 158 159 static void Signal( int sig, void (*handler)(SIGPARMS), int flags ) { 160 struct sigaction act; 161 162 act.sa_sigaction = (void (*)(int, siginfo_t *, void *))handler; 163 act.sa_flags = flags; 164 165 if ( sigaction( sig, &act, nullptr ) == -1 ) { 166 cerr << "*CFA runtime error* problem installing signal handler, error(" << errno << ") " << strerror( errno ) << endl; 167 _exit( EXIT_FAILURE ); 168 } // if 169 } // Signal 170 171 static void sigSegvBusHandler( SIGPARMS ) { 172 if ( sfp->si_addr == nullptr ) { 173 cerr << "Null pointer (nullptr) dereference." << endl; 174 } else { 175 cerr << (sig == SIGSEGV ? "Segment fault" : "Bus error") << " at memory location " << sfp->si_addr << "." << endl 176 << "Possible cause is reading outside the address space or writing to a protected area within the address space with an invalid pointer or subscript." << endl; 177 } // if 158 178 backtrace( 2 ); // skip first 2 stack frames 159 //_exit( EXIT_FAILURE );160 179 abort(); // cause core dump for debugging 161 180 } // sigSegvBusHandler 162 181 163 static void sigAbortHandler( __attribute__((unused)) int sig_num ) { 182 static void sigFpeHandler( SIGPARMS ) { 183 const char * msg; 184 185 switch ( sfp->si_code ) { 186 case FPE_INTDIV: case FPE_FLTDIV: msg = "divide by zero"; break; 187 case FPE_FLTOVF: msg = "overflow"; break; 188 case FPE_FLTUND: msg = "underflow"; break; 189 case FPE_FLTRES: msg = "inexact result"; break; 190 case FPE_FLTINV: msg = "invalid operation"; break; 191 default: msg = "unknown"; 192 } // choose 193 cerr << "Computation error " << msg << " at location " << sfp->si_addr << endl 194 << "Possible cause is constant-expression evaluation invalid." << endl; 195 backtrace( 2 ); // skip first 2 stack frames 196 abort(); // cause core dump for debugging 197 } // sigFpeHandler 198 199 static void sigAbortHandler( SIGPARMS ) { 164 200 backtrace( 6 ); // skip first 6 stack frames 165 signal( SIGABRT, SIG_DFL);// reset default signal handler201 Signal( SIGABRT, (void (*)(SIGPARMS))SIG_DFL, SA_SIGINFO ); // reset default signal handler 166 202 raise( SIGABRT ); // reraise SIGABRT 167 203 } // sigAbortHandler 168 169 204 170 205 int main( int argc, char * argv[] ) { … … 173 208 list< Declaration * > translationUnit; 174 209 175 signal( SIGSEGV, sigSegvBusHandler ); 176 signal( SIGBUS, sigSegvBusHandler ); 177 signal( SIGABRT, sigAbortHandler ); 178 179 // std::cout << "main" << std::endl; 210 Signal( SIGSEGV, sigSegvBusHandler, SA_SIGINFO ); 211 Signal( SIGBUS, sigSegvBusHandler, SA_SIGINFO ); 212 Signal( SIGFPE, sigFpeHandler, SA_SIGINFO ); 213 Signal( SIGABRT, sigAbortHandler, SA_SIGINFO ); 214 215 // cout << "main" << endl; 180 216 // for ( int i = 0; i < argc; i += 1 ) { 181 // std::cout << '\t' << argv[i] << std::endl;217 // cout << '\t' << argv[i] << endl; 182 218 // } // for 183 219 184 220 parse_cmdline( argc, argv ); // process command-line arguments 185 221 CodeGen::FixMain::setReplaceMain( !nomainp ); 222 223 if ( waiting_for_gdb ) { 224 cerr << "Waiting for gdb" << endl; 225 cerr << "run :" << endl; 226 cerr << " gdb attach " << getpid() << endl; 227 raise(SIGSTOP); 228 } // if 186 229 187 230 try { … … 251 294 Stats::Time::StopBlock(); 252 295 253 //std::cerr << "Post-Parse Check" << std::endl;254 clearInnerLvalue( translationUnit );255 assertTopLvalue( translationUnit );256 257 296 // add the assignment statement after the initialization of a type parameter 258 297 PASS( "Validate", SymTab::validate( translationUnit, symtabp ) ); … … 273 312 } // if 274 313 275 assertTopLvalue( translationUnit );276 314 PASS( "Fix Labels", ControlStruct::fixLabels( translationUnit ) ); 277 assertTopLvalue( translationUnit );278 315 PASS( "Fix Names", CodeGen::fixNames( translationUnit ) ); 279 assertTopLvalue( translationUnit );280 316 PASS( "Gen Init", InitTweak::genInit( translationUnit ) ); 281 assertTopLvalue( translationUnit );282 317 PASS( "Expand Member Tuples" , Tuples::expandMemberTuples( translationUnit ) ); 283 assertTopLvalue( translationUnit );284 318 if ( libcfap ) { 285 319 // generate the bodies of cfa library functions … … 305 339 } // if 306 340 307 assertTopLvalue( translationUnit );308 309 341 PASS( "Resolve", ResolvExpr::resolve( translationUnit ) ); 310 342 if ( exprp ) { … … 313 345 } // if 314 346 315 clearInnerLvalue( translationUnit );316 assertTopLvalue( translationUnit );317 318 347 // fix ObjectDecl - replaces ConstructorInit nodes 319 348 PASS( "Fix Init", InitTweak::fix( translationUnit, buildingLibrary() ) ); 320 clearInnerLvalue( translationUnit );321 assertTopLvalue( translationUnit );322 349 if ( ctorinitp ) { 323 350 dump ( translationUnit ); … … 326 353 327 354 PASS( "Expand Unique Expr", Tuples::expandUniqueExpr( translationUnit ) ); // xxx - is this the right place for this? want to expand ASAP so tha, sequent passes don't need to worry about double-visiting a unique expr - needs to go after InitTweak::fix so that copy constructed return declarations are reused 328 assertTopLvalue( translationUnit );329 355 330 356 PASS( "Translate EHM" , ControlStruct::translateEHM( translationUnit ) ); 331 assertTopLvalue( translationUnit );332 357 333 358 PASS( "Gen Waitfor" , Concurrency::generateWaitFor( translationUnit ) ); 334 clearInnerLvalue( translationUnit );335 assertTopLvalue( translationUnit );336 359 337 360 PASS( "Convert Specializations", GenPoly::convertSpecializations( translationUnit ) ); // needs to happen before tuple types are expanded 338 clearInnerLvalue( translationUnit );339 assertTopLvalue( translationUnit );340 361 341 362 PASS( "Expand Tuples", Tuples::expandTuples( translationUnit ) ); // xxx - is this the right place for this? 342 assertTopLvalue( translationUnit );343 363 344 364 if ( tuplep ) { … … 348 368 349 369 PASS( "Virtual Expand Casts", Virtual::expandCasts( translationUnit ) ); // Must come after translateEHM 350 assertTopLvalue( translationUnit );351 370 352 371 PASS( "Instantiate Generics", GenPoly::instantiateGeneric( translationUnit ) ); … … 355 374 return EXIT_SUCCESS; 356 375 } // if 357 clearInnerLvalue( translationUnit ); 358 assertTopLvalue( translationUnit ); 376 359 377 PASS( "Convert L-Value", GenPoly::convertLvalue( translationUnit ) ); 360 clearInnerLvalue( translationUnit );361 assertTopLvalue( translationUnit );362 378 363 379 if ( bboxp ) { … … 366 382 } // if 367 383 PASS( "Box", GenPoly::box( translationUnit ) ); 368 clearInnerLvalue( translationUnit );369 assertTopLvalue( translationUnit );370 384 371 385 if ( bcodegenp ) { … … 379 393 380 394 CodeTools::fillLocations( translationUnit ); 381 assertTopLvalue( translationUnit );382 395 PASS( "Code Gen", CodeGen::generate( translationUnit, *output, ! genproto, prettycodegenp, true, linemarks ) ); 383 396 … … 411 424 return EXIT_FAILURE; 412 425 } catch ( ... ) { 413 std::exception_ptr eptr = std::current_exception();426 exception_ptr eptr = current_exception(); 414 427 try { 415 428 if (eptr) { 416 std::rethrow_exception(eptr);429 rethrow_exception(eptr); 417 430 } else { 418 std::cerr << "Exception Uncaught and Unknown" << std::endl;419 } // if 420 } catch(const std::exception& e) {421 std::cerr << "Uncaught Exception \"" << e.what() << "\"\n";431 cerr << "Exception Uncaught and Unknown" << endl; 432 } // if 433 } catch(const exception& e) { 434 cerr << "Uncaught Exception \"" << e.what() << "\"\n"; 422 435 } // try 423 436 return EXIT_FAILURE; … … 430 443 431 444 432 static const char optstring[] = ": hlLmNnpP:S:twW:D:";445 static const char optstring[] = ":c:ghlLmNnpP:S:twW:D:"; 433 446 434 447 enum { PreludeDir = 128 }; 435 448 static struct option long_opts[] = { 449 { "colors", required_argument, nullptr, 'c' }, 450 { "gdb", no_argument, nullptr, 'g' }, 436 451 { "help", no_argument, nullptr, 'h' }, 437 452 { "libcfa", no_argument, nullptr, 'l' }, … … 452 467 453 468 static const char * description[] = { 454 "print help message", // -h 455 "generate libcfa.c", // -l 456 "generate line marks", // -L 457 "do not replace main", // -m 458 "do not generate line marks", // -N 459 "do not read prelude", // -n 469 "diagnostic color: never, always, or auto.", // -c 470 "wait for gdb to attach", // -g 471 "print help message", // -h 472 "generate libcfa.c", // -l 473 "generate line marks", // -L 474 "do not replace main", // -m 475 "do not generate line marks", // -N 476 "do not read prelude", // -n 460 477 "generate prototypes for prelude functions", // -p 461 "print", // -P478 "print", // -P 462 479 "<directory> prelude directory for debug/nodebug", // no flag 463 480 "<option-list> enable profiling information:\n counters,heap,time,all,none", // -S 464 "build in tree",// -t465 "", // -w466 "", // -W467 "", // -D481 "building cfa standard lib", // -t 482 "", // -w 483 "", // -W 484 "", // -D 468 485 }; // description 469 486 … … 533 550 while ( (c = getopt_long( argc, argv, optstring, long_opts, nullptr )) != -1 ) { 534 551 switch ( c ) { 552 case 'c': // diagnostic colors 553 if ( strcmp( optarg, "always" ) == 0 ) { 554 ErrorHelpers::colors = ErrorHelpers::Colors::Always; 555 } else if ( strcmp( optarg, "never" ) == 0 ) { 556 ErrorHelpers::colors = ErrorHelpers::Colors::Never; 557 } else if ( strcmp( optarg, "auto" ) == 0 ) { 558 ErrorHelpers::colors = ErrorHelpers::Colors::Auto; 559 } // if 560 break; 535 561 case 'h': // help message 536 562 usage( argv ); // no return … … 572 598 Stats::parse_params( optarg ); 573 599 break; 574 case 't': // build in tree600 case 't': // building cfa stdlib 575 601 treep = true; 602 break; 603 case 'g': // wait for gdb 604 waiting_for_gdb = true; 576 605 break; 577 606 case 'w': // suppress all warnings, hidden
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