ccc-analyzer revision 1a8a8cbea639d0519f06285e12f64904d1158305
1#!/usr/bin/env perl 2# 3# The LLVM Compiler Infrastructure 4# 5# This file is distributed under the University of Illinois Open Source 6# License. See LICENSE.TXT for details. 7# 8##===----------------------------------------------------------------------===## 9# 10# A script designed to interpose between the build system and gcc. It invokes 11# both gcc and the static analyzer. 12# 13##===----------------------------------------------------------------------===## 14 15use strict; 16use warnings; 17use FindBin; 18use Cwd qw/ getcwd abs_path /; 19use File::Temp qw/ tempfile /; 20use File::Path qw / mkpath /; 21use File::Basename; 22use Text::ParseWords; 23 24##===----------------------------------------------------------------------===## 25# Compiler command setup. 26##===----------------------------------------------------------------------===## 27 28my $Compiler; 29my $Clang; 30 31if ($FindBin::Script =~ /c\+\+-analyzer/) { 32 $Compiler = $ENV{'CCC_CXX'}; 33 if (!defined $Compiler) { $Compiler = "g++"; } 34 35 $Clang = $ENV{'CLANG_CXX'}; 36 if (!defined $Clang) { $Clang = 'clang++'; } 37} 38else { 39 $Compiler = $ENV{'CCC_CC'}; 40 if (!defined $Compiler) { $Compiler = "gcc"; } 41 42 $Clang = $ENV{'CLANG'}; 43 if (!defined $Clang) { $Clang = 'clang'; } 44} 45 46##===----------------------------------------------------------------------===## 47# Cleanup. 48##===----------------------------------------------------------------------===## 49 50my $ReportFailures = $ENV{'CCC_REPORT_FAILURES'}; 51if (!defined $ReportFailures) { $ReportFailures = 1; } 52 53my $CleanupFile; 54my $ResultFile; 55 56# Remove any stale files at exit. 57END { 58 if (defined $ResultFile && -z $ResultFile) { 59 `rm -f $ResultFile`; 60 } 61 if (defined $CleanupFile) { 62 `rm -f $CleanupFile`; 63 } 64} 65 66##----------------------------------------------------------------------------## 67# Process Clang Crashes. 68##----------------------------------------------------------------------------## 69 70sub GetPPExt { 71 my $Lang = shift; 72 if ($Lang =~ /objective-c\+\+/) { return ".mii" }; 73 if ($Lang =~ /objective-c/) { return ".mi"; } 74 if ($Lang =~ /c\+\+/) { return ".ii"; } 75 return ".i"; 76} 77 78# Set this to 1 if we want to include 'parser rejects' files. 79my $IncludeParserRejects = 0; 80my $ParserRejects = "Parser Rejects"; 81my $AttributeIgnored = "Attribute Ignored"; 82my $OtherError = "Other Error"; 83 84sub ProcessClangFailure { 85 my ($Clang, $Lang, $file, $Args, $HtmlDir, $ErrorType, $ofile) = @_; 86 my $Dir = "$HtmlDir/failures"; 87 mkpath $Dir; 88 89 my $prefix = "clang_crash"; 90 if ($ErrorType eq $ParserRejects) { 91 $prefix = "clang_parser_rejects"; 92 } 93 elsif ($ErrorType eq $AttributeIgnored) { 94 $prefix = "clang_attribute_ignored"; 95 } 96 elsif ($ErrorType eq $OtherError) { 97 $prefix = "clang_other_error"; 98 } 99 100 # Generate the preprocessed file with Clang. 101 my ($PPH, $PPFile) = tempfile( $prefix . "_XXXXXX", 102 SUFFIX => GetPPExt($Lang), 103 DIR => $Dir); 104 system $Clang, @$Args, "-E", "-o", $PPFile; 105 close ($PPH); 106 107 # Create the info file. 108 open (OUT, ">", "$PPFile.info.txt") or die "Cannot open $PPFile.info.txt\n"; 109 print OUT abs_path($file), "\n"; 110 print OUT "$ErrorType\n"; 111 print OUT "@$Args\n"; 112 close OUT; 113 `uname -a >> $PPFile.info.txt 2>&1`; 114 `$Compiler -v >> $PPFile.info.txt 2>&1`; 115 system 'mv',$ofile,"$PPFile.stderr.txt"; 116 return (basename $PPFile); 117} 118 119##----------------------------------------------------------------------------## 120# Running the analyzer. 121##----------------------------------------------------------------------------## 122 123sub GetCCArgs { 124 my $mode = shift; 125 my $Args = shift; 126 127 pipe (FROM_CHILD, TO_PARENT); 128 my $pid = fork(); 129 if ($pid == 0) { 130 close FROM_CHILD; 131 open(STDOUT,">&", \*TO_PARENT); 132 open(STDERR,">&", \*TO_PARENT); 133 exec $Clang, "-###", $mode, @$Args; 134 } 135 close(TO_PARENT); 136 my $line; 137 while (<FROM_CHILD>) { 138 next if (!/-cc1/); 139 $line = $_; 140 } 141 142 waitpid($pid,0); 143 close(FROM_CHILD); 144 145 die "could not find clang line\n" if (!defined $line); 146 # Strip the newline and initial whitspace 147 chomp $line; 148 $line =~ s/^\s+//; 149 my @items = quotewords('\s+', 0, $line); 150 my $cmd = shift @items; 151 die "cannot find 'clang' in 'clang' command\n" if (!($cmd =~ /clang/)); 152 return \@items; 153} 154 155sub Analyze { 156 my ($Clang, $OriginalArgs, $AnalyzeArgs, $Lang, $Output, $Verbose, $HtmlDir, 157 $file) = @_; 158 159 my @Args = @$OriginalArgs; 160 my $Cmd; 161 my @CmdArgs; 162 my @CmdArgsSansAnalyses; 163 164 if ($Lang =~ /header/) { 165 exit 0 if (!defined ($Output)); 166 $Cmd = 'cp'; 167 push @CmdArgs, $file; 168 # Remove the PCH extension. 169 $Output =~ s/[.]gch$//; 170 push @CmdArgs, $Output; 171 @CmdArgsSansAnalyses = @CmdArgs; 172 } 173 else { 174 $Cmd = $Clang; 175 if ($Lang eq "objective-c" || $Lang eq "objective-c++") { 176 push @Args,'-DIBOutlet=__attribute__((iboutlet))'; 177 push @Args,'-DIBOutletCollection(ClassName)=__attribute__((iboutletcollection)))'; 178 push @Args,'-DIBAction=void)__attribute__((ibaction)'; 179 } 180 181 # Create arguments for doing regular parsing. 182 my $SyntaxArgs = GetCCArgs("-fsyntax-only", \@Args); 183 @CmdArgsSansAnalyses = @$SyntaxArgs; 184 185 # Create arguments for doing static analysis. 186 if (defined $ResultFile) { 187 push @Args, '-o', $ResultFile; 188 } 189 elsif (defined $HtmlDir) { 190 push @Args, '-o', $HtmlDir; 191 } 192 if ($Verbose) { 193 push @Args, "-Xclang", "-analyzer-display-progress"; 194 } 195 196 foreach my $arg (@$AnalyzeArgs) { 197 push @Args, "-Xclang", $arg; 198 } 199 200 # Display Ubiviz graph? 201 if (defined $ENV{'CCC_UBI'}) { 202 push @Args, "-Xclang", "-analyzer-viz-egraph-ubigraph"; 203 } 204 205 my $AnalysisArgs = GetCCArgs("--analyze", \@Args); 206 @CmdArgs = @$AnalysisArgs; 207 } 208 209 my @PrintArgs; 210 my $dir; 211 212 if ($Verbose) { 213 $dir = getcwd(); 214 print STDERR "\n[LOCATION]: $dir\n"; 215 push @PrintArgs,"'$Cmd'"; 216 foreach my $arg (@CmdArgs) { 217 push @PrintArgs,"\'$arg\'"; 218 } 219 } 220 if ($Verbose == 1) { 221 # We MUST print to stderr. Some clients use the stdout output of 222 # gcc for various purposes. 223 print STDERR join(' ', @PrintArgs); 224 print STDERR "\n"; 225 } 226 elsif ($Verbose == 2) { 227 print STDERR "#SHELL (cd '$dir' && @PrintArgs)\n"; 228 } 229 230 # Capture the STDERR of clang and send it to a temporary file. 231 # Capture the STDOUT of clang and reroute it to ccc-analyzer's STDERR. 232 # We save the output file in the 'crashes' directory if clang encounters 233 # any problems with the file. 234 pipe (FROM_CHILD, TO_PARENT); 235 my $pid = fork(); 236 if ($pid == 0) { 237 close FROM_CHILD; 238 open(STDOUT,">&", \*TO_PARENT); 239 open(STDERR,">&", \*TO_PARENT); 240 exec $Cmd, @CmdArgs; 241 } 242 243 close TO_PARENT; 244 my ($ofh, $ofile) = tempfile("clang_output_XXXXXX", DIR => $HtmlDir); 245 246 while (<FROM_CHILD>) { 247 print $ofh $_; 248 print STDERR $_; 249 } 250 251 waitpid($pid,0); 252 close(FROM_CHILD); 253 my $Result = $?; 254 255 # Did the command die because of a signal? 256 if ($ReportFailures) { 257 if ($Result & 127 and $Cmd eq $Clang and defined $HtmlDir) { 258 ProcessClangFailure($Clang, $Lang, $file, \@CmdArgsSansAnalyses, 259 $HtmlDir, "Crash", $ofile); 260 } 261 elsif ($Result) { 262 if ($IncludeParserRejects && !($file =~/conftest/)) { 263 ProcessClangFailure($Clang, $Lang, $file, \@CmdArgsSansAnalyses, 264 $HtmlDir, $ParserRejects, $ofile); 265 } else { 266 ProcessClangFailure($Clang, $Lang, $file, \@CmdArgsSansAnalyses, 267 $HtmlDir, $OtherError, $ofile); 268 } 269 } 270 else { 271 # Check if there were any unhandled attributes. 272 if (open(CHILD, $ofile)) { 273 my %attributes_not_handled; 274 275 # Don't flag warnings about the following attributes that we 276 # know are currently not supported by Clang. 277 $attributes_not_handled{"cdecl"} = 1; 278 279 my $ppfile; 280 while (<CHILD>) { 281 next if (! /warning: '([^\']+)' attribute ignored/); 282 283 # Have we already spotted this unhandled attribute? 284 next if (defined $attributes_not_handled{$1}); 285 $attributes_not_handled{$1} = 1; 286 287 # Get the name of the attribute file. 288 my $dir = "$HtmlDir/failures"; 289 my $afile = "$dir/attribute_ignored_$1.txt"; 290 291 # Only create another preprocessed file if the attribute file 292 # doesn't exist yet. 293 next if (-e $afile); 294 295 # Add this file to the list of files that contained this attribute. 296 # Generate a preprocessed file if we haven't already. 297 if (!(defined $ppfile)) { 298 $ppfile = ProcessClangFailure($Clang, $Lang, $file, 299 \@CmdArgsSansAnalyses, 300 $HtmlDir, $AttributeIgnored, $ofile); 301 } 302 303 mkpath $dir; 304 open(AFILE, ">$afile"); 305 print AFILE "$ppfile\n"; 306 close(AFILE); 307 } 308 close CHILD; 309 } 310 } 311 } 312 313 unlink($ofile); 314} 315 316##----------------------------------------------------------------------------## 317# Lookup tables. 318##----------------------------------------------------------------------------## 319 320my %CompileOptionMap = ( 321 '-nostdinc' => 0, 322 '-fblocks' => 0, 323 '-fno-builtin' => 0, 324 '-fobjc-gc-only' => 0, 325 '-fobjc-gc' => 0, 326 '-ffreestanding' => 0, 327 '-include' => 1, 328 '-idirafter' => 1, 329 '-imacros' => 1, 330 '-iprefix' => 1, 331 '-iquote' => 1, 332 '-isystem' => 1, 333 '-iwithprefix' => 1, 334 '-iwithprefixbefore' => 1 335); 336 337my %LinkerOptionMap = ( 338 '-framework' => 1 339); 340 341my %CompilerLinkerOptionMap = ( 342 '-isysroot' => 1, 343 '-arch' => 1, 344 '-m32' => 0, 345 '-m64' => 0, 346 '-v' => 0, 347 '-fpascal-strings' => 0, 348 '-mmacosx-version-min' => 0, # This is really a 1 argument, but always has '=' 349 '-miphoneos-version-min' => 0 # This is really a 1 argument, but always has '=' 350); 351 352my %IgnoredOptionMap = ( 353 '-MT' => 1, # Ignore these preprocessor options. 354 '-MF' => 1, 355 356 '-fsyntax-only' => 0, 357 '-save-temps' => 0, 358 '-install_name' => 1, 359 '-exported_symbols_list' => 1, 360 '-current_version' => 1, 361 '-compatibility_version' => 1, 362 '-init' => 1, 363 '-e' => 1, 364 '-seg1addr' => 1, 365 '-bundle_loader' => 1, 366 '-multiply_defined' => 1, 367 '-sectorder' => 3, 368 '--param' => 1, 369 '-u' => 1 370); 371 372my %LangMap = ( 373 'c' => 'c', 374 'cp' => 'c++', 375 'cpp' => 'c++', 376 'cc' => 'c++', 377 'ii' => 'c++', 378 'i' => 'c-cpp-output', 379 'm' => 'objective-c', 380 'mi' => 'objective-c-cpp-output', 381 'mm' => 'objective-c++' 382); 383 384my %UniqueOptions = ( 385 '-isysroot' => 0 386); 387 388##----------------------------------------------------------------------------## 389# Languages accepted. 390##----------------------------------------------------------------------------## 391 392my %LangsAccepted = ( 393 "objective-c" => 1, 394 "c" => 1, 395 "c++" => 1, 396 "objective-c++" => 1 397); 398 399##----------------------------------------------------------------------------## 400# Main Logic. 401##----------------------------------------------------------------------------## 402 403my $Action = 'link'; 404my @CompileOpts; 405my @LinkOpts; 406my @Files; 407my $Lang; 408my $Output; 409my %Uniqued; 410 411# Forward arguments to gcc. 412my $Status = system($Compiler,@ARGV); 413if (defined $ENV{'CCC_ANALYZER_LOG'}) { 414 print "$Compiler @ARGV\n"; 415} 416if ($Status) { exit($Status >> 8); } 417 418# Get the analysis options. 419my $Analyses = $ENV{'CCC_ANALYZER_ANALYSIS'}; 420 421# Get the store model. 422my $StoreModel = $ENV{'CCC_ANALYZER_STORE_MODEL'}; 423 424# Get the constraints engine. 425my $ConstraintsModel = $ENV{'CCC_ANALYZER_CONSTRAINTS_MODEL'}; 426 427# Get the output format. 428my $OutputFormat = $ENV{'CCC_ANALYZER_OUTPUT_FORMAT'}; 429if (!defined $OutputFormat) { $OutputFormat = "html"; } 430 431# Determine the level of verbosity. 432my $Verbose = 0; 433if (defined $ENV{CCC_ANALYZER_VERBOSE}) { $Verbose = 1; } 434if (defined $ENV{CCC_ANALYZER_LOG}) { $Verbose = 2; } 435 436# Get the HTML output directory. 437my $HtmlDir = $ENV{'CCC_ANALYZER_HTML'}; 438 439my %DisabledArchs = ('ppc' => 1, 'ppc64' => 1); 440my %ArchsSeen; 441my $HadArch = 0; 442 443# Process the arguments. 444foreach (my $i = 0; $i < scalar(@ARGV); ++$i) { 445 my $Arg = $ARGV[$i]; 446 my ($ArgKey) = split /=/,$Arg,2; 447 448 # Modes ccc-analyzer supports 449 if ($Arg =~ /^-(E|MM?)$/) { $Action = 'preprocess'; } 450 elsif ($Arg eq '-c') { $Action = 'compile'; } 451 elsif ($Arg =~ /^-print-prog-name/) { exit 0; } 452 453 # Specially handle duplicate cases of -arch 454 if ($Arg eq "-arch") { 455 my $arch = $ARGV[$i+1]; 456 # We don't want to process 'ppc' because of Clang's lack of support 457 # for Altivec (also some #defines won't likely be defined correctly, etc.) 458 if (!(defined $DisabledArchs{$arch})) { $ArchsSeen{$arch} = 1; } 459 $HadArch = 1; 460 ++$i; 461 next; 462 } 463 464 # Options with possible arguments that should pass through to compiler. 465 if (defined $CompileOptionMap{$ArgKey}) { 466 my $Cnt = $CompileOptionMap{$ArgKey}; 467 push @CompileOpts,$Arg; 468 while ($Cnt > 0) { ++$i; --$Cnt; push @CompileOpts, $ARGV[$i]; } 469 next; 470 } 471 472 # Options with possible arguments that should pass through to linker. 473 if (defined $LinkerOptionMap{$ArgKey}) { 474 my $Cnt = $LinkerOptionMap{$ArgKey}; 475 push @LinkOpts,$Arg; 476 while ($Cnt > 0) { ++$i; --$Cnt; push @LinkOpts, $ARGV[$i]; } 477 next; 478 } 479 480 # Options with possible arguments that should pass through to both compiler 481 # and the linker. 482 if (defined $CompilerLinkerOptionMap{$ArgKey}) { 483 my $Cnt = $CompilerLinkerOptionMap{$ArgKey}; 484 485 # Check if this is an option that should have a unique value, and if so 486 # determine if the value was checked before. 487 if ($UniqueOptions{$Arg}) { 488 if (defined $Uniqued{$Arg}) { 489 $i += $Cnt; 490 next; 491 } 492 $Uniqued{$Arg} = 1; 493 } 494 495 push @CompileOpts,$Arg; 496 push @LinkOpts,$Arg; 497 498 while ($Cnt > 0) { 499 ++$i; --$Cnt; 500 push @CompileOpts, $ARGV[$i]; 501 push @LinkOpts, $ARGV[$i]; 502 } 503 next; 504 } 505 506 # Ignored options. 507 if (defined $IgnoredOptionMap{$ArgKey}) { 508 my $Cnt = $IgnoredOptionMap{$ArgKey}; 509 while ($Cnt > 0) { 510 ++$i; --$Cnt; 511 } 512 next; 513 } 514 515 # Compile mode flags. 516 if ($Arg =~ /^-[D,I,U](.*)$/) { 517 my $Tmp = $Arg; 518 if ($1 eq '') { 519 # FIXME: Check if we are going off the end. 520 ++$i; 521 $Tmp = $Arg . $ARGV[$i]; 522 } 523 push @CompileOpts,$Tmp; 524 next; 525 } 526 527 # Language. 528 if ($Arg eq '-x') { 529 $Lang = $ARGV[$i+1]; 530 ++$i; next; 531 } 532 533 # Output file. 534 if ($Arg eq '-o') { 535 ++$i; 536 $Output = $ARGV[$i]; 537 next; 538 } 539 540 # Get the link mode. 541 if ($Arg =~ /^-[l,L,O]/) { 542 if ($Arg eq '-O') { push @LinkOpts,'-O1'; } 543 elsif ($Arg eq '-Os') { push @LinkOpts,'-O2'; } 544 else { push @LinkOpts,$Arg; } 545 next; 546 } 547 548 if ($Arg =~ /^-std=/) { 549 push @CompileOpts,$Arg; 550 next; 551 } 552 553# if ($Arg =~ /^-f/) { 554# # FIXME: Not sure if the remaining -fxxxx options have no arguments. 555# push @CompileOpts,$Arg; 556# push @LinkOpts,$Arg; # FIXME: Not sure if these are link opts. 557# } 558 559 # Get the compiler/link mode. 560 if ($Arg =~ /^-F(.+)$/) { 561 my $Tmp = $Arg; 562 if ($1 eq '') { 563 # FIXME: Check if we are going off the end. 564 ++$i; 565 $Tmp = $Arg . $ARGV[$i]; 566 } 567 push @CompileOpts,$Tmp; 568 push @LinkOpts,$Tmp; 569 next; 570 } 571 572 # Input files. 573 if ($Arg eq '-filelist') { 574 # FIXME: Make sure we aren't walking off the end. 575 open(IN, $ARGV[$i+1]); 576 while (<IN>) { s/\015?\012//; push @Files,$_; } 577 close(IN); 578 ++$i; 579 next; 580 } 581 582 # Handle -Wno-. We don't care about extra warnings, but 583 # we should suppress ones that we don't want to see. 584 if ($Arg =~ /^-Wno-/) { 585 push @CompileOpts, $Arg; 586 next; 587 } 588 589 if (!($Arg =~ /^-/)) { 590 push @Files, $Arg; 591 next; 592 } 593} 594 595if ($Action eq 'compile' or $Action eq 'link') { 596 my @Archs = keys %ArchsSeen; 597 # Skip the file if we don't support the architectures specified. 598 exit 0 if ($HadArch && scalar(@Archs) == 0); 599 600 foreach my $file (@Files) { 601 # Determine the language for the file. 602 my $FileLang = $Lang; 603 604 if (!defined($FileLang)) { 605 # Infer the language from the extension. 606 if ($file =~ /[.]([^.]+)$/) { 607 $FileLang = $LangMap{$1}; 608 } 609 } 610 611 # FileLang still not defined? Skip the file. 612 next if (!defined $FileLang); 613 614 # Language not accepted? 615 next if (!defined $LangsAccepted{$FileLang}); 616 617 my @CmdArgs; 618 my @AnalyzeArgs; 619 620 if ($FileLang ne 'unknown') { 621 push @CmdArgs, '-x', $FileLang; 622 } 623 624 if (defined $StoreModel) { 625 push @AnalyzeArgs, "-analyzer-store=$StoreModel"; 626 } 627 628 if (defined $ConstraintsModel) { 629 push @AnalyzeArgs, "-analyzer-constraints=$ConstraintsModel"; 630 } 631 632 if (defined $Analyses) { 633 push @AnalyzeArgs, split '\s+', $Analyses; 634 } 635 636 if (defined $OutputFormat) { 637 push @AnalyzeArgs, "-analyzer-output=" . $OutputFormat; 638 if ($OutputFormat =~ /plist/) { 639 # Change "Output" to be a file. 640 my ($h, $f) = tempfile("report-XXXXXX", SUFFIX => ".plist", 641 DIR => $HtmlDir); 642 $ResultFile = $f; 643 # If the HtmlDir is not set, we sould clean up the plist files. 644 if (!defined $HtmlDir || -z $HtmlDir) { 645 $CleanupFile = $f; 646 } 647 } 648 } 649 650 push @CmdArgs, @CompileOpts; 651 push @CmdArgs, $file; 652 653 if (scalar @Archs) { 654 foreach my $arch (@Archs) { 655 my @NewArgs; 656 push @NewArgs, '-arch', $arch; 657 push @NewArgs, @CmdArgs; 658 Analyze($Clang, \@NewArgs, \@AnalyzeArgs, $FileLang, $Output, 659 $Verbose, $HtmlDir, $file); 660 } 661 } 662 else { 663 Analyze($Clang, \@CmdArgs, \@AnalyzeArgs, $FileLang, $Output, 664 $Verbose, $HtmlDir, $file); 665 } 666 } 667} 668 669exit($Status >> 8); 670 671