mirror of https://github.com/pragma-/pbot.git
133 lines
4.3 KiB
Perl
Executable File
133 lines
4.3 KiB
Perl
Executable File
#!/usr/bin/perl
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# SPDX-FileCopyrightText: 2021 Pragmatic Software <pragma78@gmail.com>
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# SPDX-License-Identifier: MIT
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use warnings;
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use strict;
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package _c_base;
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use parent '_default';
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sub preprocess {
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my $self = shift;
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my $input = $self->{input} // '';
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open(my $fh, '>:encoding(UTF-8)', '.input');
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print $fh "$input\n";
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close $fh;
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my @cmd = $self->split_line($self->{cmdline}, strip_quotes => 1, preserve_escapes => 0);
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if ($self->{code} =~ m/print_last_statement\(.*\);$/m) {
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# remove print_last_statement wrapper in order to get warnings/errors from last statement line
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my $code = $self->{code};
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$code =~ s/print_last_statement\((.*)\);$/$1;/mg;
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open(my $fh, '>:encoding(UTF-8)', $self->{sourcefile}) or die $!;
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print $fh $code . "\n";
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close $fh;
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print STDERR "Executing [$self->{cmdline}] without print_last_statement\n";
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my ($retval, $stdout, $stderr) = $self->execute(60, undef, @cmd);
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$self->{output} = $stderr;
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$self->{output} .= ' ' if length $self->{output};
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$self->{output} .= $stdout;
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$self->{error} = $retval;
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# now compile with print_last_statement intact, ignoring compile results
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if (not $self->{error}) {
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open(my $fh, '>:encoding(UTF-8)', $self->{sourcefile}) or die $!;
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print $fh $self->{code} . "\n";
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close $fh;
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print STDERR "Executing [$self->{cmdline}] with print_last_statement\n";
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$self->execute(60, undef, @cmd);
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}
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} else {
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open(my $fh, '>:encoding(UTF-8)', $self->{sourcefile}) or die $!;
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print $fh $self->{code} . "\n";
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close $fh;
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print STDERR "Executing [$self->{cmdline}]\n";
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my ($retval, $stdout, $stderr) = $self->execute(60, undef, @cmd);
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$self->{output} = $stderr;
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$self->{output} .= ' ' if length $self->{output};
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$self->{output} .= $stdout;
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$self->{error} = $retval;
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}
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if ($self->{cmdline} =~ m/--(?:version|analyze)/) {
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$self->{done} = 1;
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}
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# set done instead of error to prevent "[Exit 1]" output for compiler error messages
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if ($self->{error}) {
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$self->{error} = 0;
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$self->{done} = 1;
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}
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}
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sub postprocess {
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my $self = shift;
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$self->SUPER::postprocess;
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# no errors compiling, but if output contains something, it must be diagnostic messages
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if (length $self->{output}) {
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$self->{output} =~ s/^\s+//;
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$self->{output} =~ s/\s+$//;
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$self->{output} = "[$self->{output}]\n";
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}
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print STDERR "Executing gdb\n";
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my ($exitval, $stdout, $stderr);
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my $ulimits = "ulimit -f 2000; ulimit -t 8; ulimit -u 200";
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my @args = $self->split_line($self->{arguments}, strip_quotes => 1, preserve_escapes => 0);
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my $quoted_args = '';
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foreach my $arg (@args) {
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$arg =~ s/'/'"'"'/g;
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$quoted_args .= "'$arg' ";
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}
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if ($self->{cmdline} =~ /-fsanitize=(?:[^ ]+,)?address/) {
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# leak sanitizer doesn't work under ptrace/gdb
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# ASAN_OPTIONS=strict_string_checks=1:detect_stack_use_after_return=1:check_initialization_order=1:strict_init_order=1
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($exitval, $stdout, $stderr) = $self->execute(60, "$ulimits; ./prog $quoted_args\n", '/bin/sh');
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} else {
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my $input = "$ulimits; guest-gdb ./prog $quoted_args";
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($exitval, $stdout, $stderr) = $self->execute(60, $input, '/bin/sh');
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}
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$self->{error} = $exitval;
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my $result = $stderr;
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$result .= ' ' if length $result;
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$result .= $stdout;
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if (not length $result) {
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$self->{no_output} = 1;
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} elsif ($self->{code} =~ m/print_last_statement\(.*\);$/m
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&& (
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# should move this into its own function with a list
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$result =~ m/A syntax error in expression/
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|| $result =~ m/No symbol.*in current context/
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|| $result =~ m/has unknown return type; cast the call to its declared return/
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|| $result =~ m/Can't take address of.*which isn't an lvalue/
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|| $result =~ m/cannot subscript something/
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)) {
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# strip print_last_statement and rebuild/re-run
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$self->{code} =~ s/print_last_statement\((.*)\);/$1;/mg;
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$self->preprocess;
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$self->postprocess;
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} else {
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$self->{output} .= $result;
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}
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}
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1;
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