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-rwxr-xr-xllvm/ccc-analyzer617
1 files changed, 617 insertions, 0 deletions
diff --git a/llvm/ccc-analyzer b/llvm/ccc-analyzer
new file mode 100755
index 0000000..e4bf415
--- /dev/null
+++ b/llvm/ccc-analyzer
@@ -0,0 +1,617 @@
+#!/usr/bin/env perl
+#
+# The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+#
+# A script designed to interpose between the build system and gcc. It invokes
+# both gcc and the static analyzer.
+#
+##===----------------------------------------------------------------------===##
+
+use strict;
+use warnings;
+use Cwd qw/ getcwd abs_path /;
+use File::Temp qw/ tempfile /;
+use File::Path qw / mkpath /;
+use File::Basename;
+use Text::ParseWords;
+
+my $CC = $ENV{'CCC_CC'};
+if (!defined $CC) { $CC = "gcc"; }
+my $CleanupFile;
+my $ResultFile;
+
+# Remove any stale files at exit.
+END {
+ if (defined $CleanupFile && -z $CleanupFile) {
+ `rm -f $CleanupFile`;
+ }
+}
+
+##----------------------------------------------------------------------------##
+# Process Clang Crashes.
+##----------------------------------------------------------------------------##
+
+sub GetPPExt {
+ my $Lang = shift;
+ if ($Lang =~ /objective-c/) { return ".mi"; }
+ return ".i";
+}
+
+# Set this to 1 if we want to include 'parser rejects' files.
+my $IncludeParserRejects = 0;
+my $ParserRejects = "Parser Rejects";
+
+my $AttributeIgnored = "Attribute Ignored";
+
+sub ProcessClangFailure {
+ my ($ClangCC, $Lang, $file, $Args, $HtmlDir, $ErrorType, $ofile) = @_;
+ my $Dir = "$HtmlDir/failures";
+ mkpath $Dir;
+
+ my $prefix = "clang_crash";
+ if ($ErrorType eq $ParserRejects) {
+ $prefix = "clang_parser_rejects";
+ }
+ elsif ($ErrorType eq $AttributeIgnored) {
+ $prefix = "clang_attribute_ignored";
+ }
+
+ # Generate the preprocessed file with cc (i.e., gcc).
+ my ($PPH, $PPFile) = tempfile( $prefix . "_XXXXXX",
+ SUFFIX => GetPPExt($Lang),
+ DIR => $Dir);
+
+ system $CC, @$Args, "-E", "-o", $PPFile;
+ close ($PPH);
+
+ # Generate the preprocessed file with clang.
+ my $PPFile_Clang = $PPFile;
+ $PPFile_Clang =~ s/[.](.+)$/.clang.$1/;
+ system $ClangCC, @$Args, "-E", "-o", "$PPFile_Clang";
+
+ # Create the info file.
+ open (OUT, ">", "$PPFile.info.txt") or die "Cannot open $PPFile.info.txt\n";
+ print OUT abs_path($file), "\n";
+ print OUT "$ErrorType\n";
+ print OUT "@$Args\n";
+ close OUT;
+ `uname -a >> $PPFile.info.txt 2>&1`;
+ `$CC -v >> $PPFile.info.txt 2>&1`;
+ system 'mv',$ofile,"$PPFile.stderr.txt";
+ return (basename $PPFile);
+}
+
+##----------------------------------------------------------------------------##
+# Running the analyzer.
+##----------------------------------------------------------------------------##
+
+# Determine what clang executable to use.
+my $Clang = $ENV{'CLANG'};
+if (!defined $Clang) { $Clang = 'clang'; }
+
+sub GetCCArgs {
+ my $Args = shift;
+
+ pipe (FROM_CHILD, TO_PARENT);
+ my $pid = fork();
+ if ($pid == 0) {
+ close FROM_CHILD;
+ open(STDOUT,">&", \*TO_PARENT);
+ open(STDERR,">&", \*TO_PARENT);
+ exec $Clang, "-###", "-fsyntax-only", @$Args;
+ }
+ close(TO_PARENT);
+ my $line;
+ while (<FROM_CHILD>) {
+ next if (!/clang-cc/);
+ $line = $_;
+ }
+
+ waitpid($pid,0);
+ close(FROM_CHILD);
+
+ die "could not find clang-cc line\n" if (!defined $line);
+ # Strip the newline and initial whitspace
+ chomp $line;
+ $line =~ s/^\s+//;
+
+ my @items = quotewords('\s+', 1, $line);
+ for (my $i = 0 ; $ i < scalar(@items); ++$i) {
+ $items[$i] =~ s/^\"//;
+ $items[$i] =~ s/\"$//;
+ }
+ my $cmd = shift @items;
+ die "cannot find 'clang-cc' in 'clang' command\n" if (!($cmd =~ /clang-cc/));
+ return \@items;
+}
+
+sub Analyze {
+ my ($ClangCC, $Args, $AnalyzeArgs, $Lang, $Output, $Verbose, $HtmlDir,
+ $file, $Analyses) = @_;
+
+ $Args = GetCCArgs($Args);
+
+ # Skip anything related to C++.
+ return if ($Lang =~ /c[+][+]/);
+
+ my $RunAnalyzer = 0;
+ my $Cmd;
+ my @CmdArgs;
+ my @CmdArgsSansAnalyses;
+
+ if ($Lang =~ /header/) {
+ exit 0 if (!defined ($Output));
+ $Cmd = 'cp';
+ push @CmdArgs,$file;
+ # Remove the PCH extension.
+ $Output =~ s/[.]gch$//;
+ push @CmdArgs,$Output;
+ @CmdArgsSansAnalyses = @CmdArgs;
+ }
+ else {
+ $Cmd = $ClangCC;
+ push @CmdArgs,'-DIBOutlet=__attribute__((iboutlet))';
+ push @CmdArgs,@$Args;
+ @CmdArgsSansAnalyses = @CmdArgs;
+ push @CmdArgs,'-analyze';
+ push @CmdArgs,"-analyzer-display-progress";
+ push @CmdArgs,"-analyzer-eagerly-assume";
+ push @CmdArgs,(split /\s/,$Analyses);
+ $RunAnalyzer = 1;
+ }
+
+ # Add the analysis arguments passed down from scan-build.
+ foreach my $Arg (@$AnalyzeArgs) {
+ push @CmdArgs, $Arg;
+ }
+
+ my @PrintArgs;
+ my $dir;
+
+ if ($Verbose) {
+ $dir = getcwd();
+ print STDERR "\n[LOCATION]: $dir\n";
+ push @PrintArgs,"'$Cmd'";
+ foreach my $arg (@CmdArgs) { push @PrintArgs,"\'$arg\'"; }
+ }
+
+ if ($Verbose == 1) {
+ # We MUST print to stderr. Some clients use the stdout output of
+ # gcc for various purposes.
+ print STDERR join(' ',@PrintArgs);
+ print STDERR "\n";
+ }
+ elsif ($Verbose == 2) {
+ print STDERR "#SHELL (cd '$dir' && @PrintArgs)\n";
+ }
+
+ if ($RunAnalyzer) {
+ if (defined $ResultFile) {
+ push @CmdArgs,'-o';
+ push @CmdArgs, $ResultFile;
+ }
+ elsif (defined $HtmlDir) {
+ push @CmdArgs,'-o';
+ push @CmdArgs, $HtmlDir;
+ }
+ }
+
+ if (defined $ENV{'CCC_UBI'}) {
+ push @CmdArgs,"--analyzer-viz-egraph-ubigraph";
+ }
+
+ # Capture the STDERR of clang and send it to a temporary file.
+ # Capture the STDOUT of clang and reroute it to ccc-analyzer's STDERR.
+ # We save the output file in the 'crashes' directory if clang encounters
+ # any problems with the file.
+ pipe (FROM_CHILD, TO_PARENT);
+ my $pid = fork();
+ if ($pid == 0) {
+ close FROM_CHILD;
+ open(STDOUT,">&", \*TO_PARENT);
+ open(STDERR,">&", \*TO_PARENT);
+ exec $Cmd, @CmdArgs;
+ }
+
+ close TO_PARENT;
+ my ($ofh, $ofile) = tempfile("clang_output_XXXXXX", DIR => $HtmlDir);
+
+ while (<FROM_CHILD>) {
+ print $ofh $_;
+ print STDERR $_;
+ }
+
+ waitpid($pid,0);
+ close(FROM_CHILD);
+ my $Result = $?;
+
+ # Did the command die because of a signal?
+ if ($Result & 127 and $Cmd eq $ClangCC and defined $HtmlDir) {
+ ProcessClangFailure($ClangCC, $Lang, $file, \@CmdArgsSansAnalyses, $HtmlDir,
+ "Crash", $ofile);
+ }
+ elsif ($Result) {
+ if ($IncludeParserRejects && !($file =~/conftest/)) {
+ ProcessClangFailure($ClangCC, $Lang, $file, \@CmdArgsSansAnalyses, $HtmlDir,
+ $ParserRejects, $ofile);
+ }
+ }
+ else {
+ # Check if there were any unhandled attributes.
+ if (open(CHILD, $ofile)) {
+ my %attributes_not_handled;
+
+ # Don't flag warnings about the following attributes that we
+ # know are currently not supported by Clang.
+ $attributes_not_handled{"cdecl"} = 1;
+
+ my $ppfile;
+ while (<CHILD>) {
+ next if (! /warning: '([^\']+)' attribute ignored/);
+
+ # Have we already spotted this unhandled attribute?
+ next if (defined $attributes_not_handled{$1});
+ $attributes_not_handled{$1} = 1;
+
+ # Get the name of the attribute file.
+ my $dir = "$HtmlDir/failures";
+ my $afile = "$dir/attribute_ignored_$1.txt";
+
+ # Only create another preprocessed file if the attribute file
+ # doesn't exist yet.
+ next if (-e $afile);
+
+ # Add this file to the list of files that contained this attribute.
+ # Generate a preprocessed file if we haven't already.
+ if (!(defined $ppfile)) {
+ $ppfile = ProcessClangFailure($ClangCC, $Lang, $file,
+ \@CmdArgsSansAnalyses,
+ $HtmlDir, $AttributeIgnored, $ofile);
+ }
+
+ mkpath $dir;
+ open(AFILE, ">$afile");
+ print AFILE "$ppfile\n";
+ close(AFILE);
+ }
+ close CHILD;
+ }
+ }
+
+ `rm -f $ofile`;
+}
+
+##----------------------------------------------------------------------------##
+# Lookup tables.
+##----------------------------------------------------------------------------##
+
+my %CompileOptionMap = (
+ '-nostdinc' => 0,
+ '-fblocks' => 0,
+ '-fobjc-gc-only' => 0,
+ '-fobjc-gc' => 0,
+ '-ffreestanding' => 0,
+ '-include' => 1,
+ '-idirafter' => 1,
+ '-iprefix' => 1,
+ '-iquote' => 1,
+ '-isystem' => 1,
+ '-iwithprefix' => 1,
+ '-iwithprefixbefore' => 1
+);
+
+my %LinkerOptionMap = (
+ '-framework' => 1
+);
+
+my %CompilerLinkerOptionMap = (
+ '-isysroot' => 1,
+ '-arch' => 1,
+ '-v' => 0,
+ '-fpascal-strings' => 0,
+ '-mmacosx-version-min' => 0, # This is really a 1 argument, but always has '='
+ '-miphoneos-version-min' => 0 # This is really a 1 argument, but always has '='
+);
+
+my %IgnoredOptionMap = (
+ '-MT' => 1, # Ignore these preprocessor options.
+ '-MF' => 1,
+
+ '-fsyntax-only' => 0,
+ '-save-temps' => 0,
+ '-install_name' => 1,
+ '-exported_symbols_list' => 1,
+ '-current_version' => 1,
+ '-compatibility_version' => 1,
+ '-init' => 1,
+ '-e' => 1,
+ '-seg1addr' => 1,
+ '-bundle_loader' => 1,
+ '-multiply_defined' => 1,
+ '-sectorder' => 3,
+ '--param' => 1,
+ '-u' => 1
+);
+
+my %LangMap = (
+ 'c' => 'c',
+ 'cpp' => 'c++',
+ 'cc' => 'c++',
+ 'i' => 'c-cpp-output',
+ 'm' => 'objective-c',
+ 'mi' => 'objective-c-cpp-output'
+);
+
+my %UniqueOptions = (
+ '-isysroot' => 0
+);
+
+my %LangsAccepted = (
+ "objective-c" => 1,
+ "c" => 1
+);
+
+##----------------------------------------------------------------------------##
+# Main Logic.
+##----------------------------------------------------------------------------##
+
+my $Action = 'link';
+my @CompileOpts;
+my @LinkOpts;
+my @Files;
+my $Lang;
+my $Output;
+my %Uniqued;
+
+# Forward arguments to gcc.
+my $Status = system($CC,@ARGV);
+if ($Status) { exit($Status >> 8); }
+
+# Get the analysis options.
+my $Analyses = $ENV{'CCC_ANALYZER_ANALYSIS'};
+if (!defined($Analyses)) { $Analyses = '-checker-cfref'; }
+
+# Get the store model.
+my $StoreModel = $ENV{'CCC_ANALYZER_STORE_MODEL'};
+if (!defined $StoreModel) { $StoreModel = "basic"; }
+
+# Get the constraints engine.
+my $ConstraintsModel = $ENV{'CCC_ANALYZER_CONSTRAINTS_MODEL'};
+if (!defined $ConstraintsModel) { $ConstraintsModel = "range"; }
+
+# Get the output format.
+my $OutputFormat = $ENV{'CCC_ANALYZER_OUTPUT_FORMAT'};
+if (!defined $OutputFormat) { $OutputFormat = "html"; }
+
+# Determine the level of verbosity.
+my $Verbose = 0;
+if (defined $ENV{CCC_ANALYZER_VERBOSE}) { $Verbose = 1; }
+if (defined $ENV{CCC_ANALYZER_LOG}) { $Verbose = 2; }
+
+# Determine what clang-cc executable to use.
+my $ClangCC = $ENV{'CLANG_CC'};
+if (!defined $ClangCC) { $ClangCC = 'clang-cc'; }
+
+# Get the HTML output directory.
+my $HtmlDir = $ENV{'CCC_ANALYZER_HTML'};
+
+my %DisabledArchs = ('ppc' => 1, 'ppc64' => 1);
+my %ArchsSeen;
+my $HadArch = 0;
+
+# Process the arguments.
+foreach (my $i = 0; $i < scalar(@ARGV); ++$i) {
+ my $Arg = $ARGV[$i];
+ my ($ArgKey) = split /=/,$Arg,2;
+
+ # Modes ccc-analyzer supports
+ if ($Arg eq '-E') { $Action = 'preprocess'; }
+ elsif ($Arg eq '-c') { $Action = 'compile'; }
+ elsif ($Arg =~ /^-print-prog-name/) { exit 0; }
+
+ # Specially handle duplicate cases of -arch
+ if ($Arg eq "-arch") {
+ my $arch = $ARGV[$i+1];
+ # We don't want to process 'ppc' because of Clang's lack of support
+ # for Altivec (also some #defines won't likely be defined correctly, etc.)
+ if (!(defined $DisabledArchs{$arch})) { $ArchsSeen{$arch} = 1; }
+ $HadArch = 1;
+ ++$i;
+ next;
+ }
+
+ # Options with possible arguments that should pass through to compiler.
+ if (defined $CompileOptionMap{$ArgKey}) {
+ my $Cnt = $CompileOptionMap{$ArgKey};
+ push @CompileOpts,$Arg;
+ while ($Cnt > 0) { ++$i; --$Cnt; push @CompileOpts, $ARGV[$i]; }
+ next;
+ }
+
+ # Options with possible arguments that should pass through to linker.
+ if (defined $LinkerOptionMap{$ArgKey}) {
+ my $Cnt = $LinkerOptionMap{$ArgKey};
+ push @LinkOpts,$Arg;
+ while ($Cnt > 0) { ++$i; --$Cnt; push @LinkOpts, $ARGV[$i]; }
+ next;
+ }
+
+ # Options with possible arguments that should pass through to both compiler
+ # and the linker.
+ if (defined $CompilerLinkerOptionMap{$ArgKey}) {
+ my $Cnt = $CompilerLinkerOptionMap{$ArgKey};
+
+ # Check if this is an option that should have a unique value, and if so
+ # determine if the value was checked before.
+ if ($UniqueOptions{$Arg}) {
+ if (defined $Uniqued{$Arg}) {
+ $i += $Cnt;
+ next;
+ }
+ $Uniqued{$Arg} = 1;
+ }
+
+ push @CompileOpts,$Arg;
+ push @LinkOpts,$Arg;
+
+ while ($Cnt > 0) {
+ ++$i; --$Cnt;
+ push @CompileOpts, $ARGV[$i];
+ push @LinkOpts, $ARGV[$i];
+ }
+ next;
+ }
+
+ # Ignored options.
+ if (defined $IgnoredOptionMap{$ArgKey}) {
+ my $Cnt = $IgnoredOptionMap{$ArgKey};
+ while ($Cnt > 0) {
+ ++$i; --$Cnt;
+ }
+ next;
+ }
+
+ # Compile mode flags.
+ if ($Arg =~ /^-[D,I,U](.*)$/) {
+ my $Tmp = $Arg;
+ if ($1 eq '') {
+ # FIXME: Check if we are going off the end.
+ ++$i;
+ $Tmp = $Arg . $ARGV[$i];
+ }
+ push @CompileOpts,$Tmp;
+ next;
+ }
+
+ # Language.
+ if ($Arg eq '-x') {
+ $Lang = $ARGV[$i+1];
+ ++$i; next;
+ }
+
+ # Output file.
+ if ($Arg eq '-o') {
+ ++$i;
+ $Output = $ARGV[$i];
+ next;
+ }
+
+ # Get the link mode.
+ if ($Arg =~ /^-[l,L,O]/) {
+ if ($Arg eq '-O') { push @LinkOpts,'-O1'; }
+ elsif ($Arg eq '-Os') { push @LinkOpts,'-O2'; }
+ else { push @LinkOpts,$Arg; }
+ next;
+ }
+
+ if ($Arg =~ /^-std=/) {
+ push @CompileOpts,$Arg;
+ next;
+ }
+
+# if ($Arg =~ /^-f/) {
+# # FIXME: Not sure if the remaining -fxxxx options have no arguments.
+# push @CompileOpts,$Arg;
+# push @LinkOpts,$Arg; # FIXME: Not sure if these are link opts.
+# }
+
+ # Get the compiler/link mode.
+ if ($Arg =~ /^-F(.+)$/) {
+ my $Tmp = $Arg;
+ if ($1 eq '') {
+ # FIXME: Check if we are going off the end.
+ ++$i;
+ $Tmp = $Arg . $ARGV[$i];
+ }
+ push @CompileOpts,$Tmp;
+ push @LinkOpts,$Tmp;
+ next;
+ }
+
+ # Input files.
+ if ($Arg eq '-filelist') {
+ # FIXME: Make sure we aren't walking off the end.
+ open(IN, $ARGV[$i+1]);
+ while (<IN>) { s/\015?\012//; push @Files,$_; }
+ close(IN);
+ ++$i; next;
+ }
+
+ if (!($Arg =~ /^-/)) {
+ push @Files,$Arg; next;
+ }
+}
+
+if ($Action eq 'compile' or $Action eq 'link') {
+ my @Archs = keys %ArchsSeen;
+ # Skip the file if we don't support the architectures specified.
+ exit 0 if ($HadArch && scalar(@Archs) == 0);
+
+ foreach my $file (@Files) {
+ # Determine the language for the file.
+ my $FileLang = $Lang;
+
+ if (!defined($FileLang)) {
+ # Infer the language from the extension.
+ if ($file =~ /[.]([^.]+)$/) {
+ $FileLang = $LangMap{$1};
+ }
+ }
+
+ next if (!defined $FileLang);
+ next if (!defined $LangsAccepted{$FileLang});
+
+ my @CmdArgs;
+ my @AnalyzeArgs;
+
+ if ($FileLang ne 'unknown') {
+ push @CmdArgs,'-x';
+ push @CmdArgs,$FileLang;
+ }
+
+ if (defined $StoreModel) {
+ push @AnalyzeArgs, "-analyzer-store=$StoreModel";
+ }
+
+ if (defined $ConstraintsModel) {
+ push @AnalyzeArgs, "-analyzer-constraints=$ConstraintsModel";
+ }
+
+ if (defined $OutputFormat) {
+ push @AnalyzeArgs, "-analyzer-output=" . $OutputFormat;
+ if ($OutputFormat eq "plist") {
+ # Change "Output" to be a file.
+ my ($h, $f) = tempfile("report-XXXXXX", SUFFIX => ".plist",
+ DIR => $HtmlDir);
+ $ResultFile = $f;
+ $CleanupFile = $f;
+ }
+ }
+
+ push @CmdArgs,@CompileOpts;
+ push @CmdArgs,$file;
+
+ if (scalar @Archs) {
+ foreach my $arch (@Archs) {
+ my @NewArgs;
+ push @NewArgs, '-arch';
+ push @NewArgs, $arch;
+ push @NewArgs, @CmdArgs;
+ Analyze($ClangCC, \@NewArgs, \@AnalyzeArgs, $FileLang, $Output,
+ $Verbose, $HtmlDir, $file, $Analyses);
+ }
+ }
+ else {
+ Analyze($ClangCC, \@CmdArgs, \@AnalyzeArgs, $FileLang, $Output,
+ $Verbose, $HtmlDir, $file, $Analyses);
+ }
+ }
+}
+
+exit($Status >> 8);
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-24 15:30:13 +0000