mirror of
https://github.com/golang/go
synced 2024-11-11 23:40:22 -07:00
114 lines
2.9 KiB
Perl
Executable File
114 lines
2.9 KiB
Perl
Executable File
#!/usr/bin/perl
|
|
# Copyright 2009 The Go Authors. All rights reserved.
|
|
# Use of this source code is governed by a BSD-style
|
|
# license that can be found in the LICENSE file.
|
|
|
|
# This script checks that the compilers emit the errors which we expect.
|
|
# Usage: errchk COMPILER [OPTS] SOURCEFILES. This will run the command
|
|
# COMPILER [OPTS] SOURCEFILES. The compilation is expected to fail; if
|
|
# it succeeds, this script will report an error. The stderr output of
|
|
# the compiler will be matched against comments in SOURCEFILES. For each
|
|
# line of the source files which should generate an error, there should
|
|
# be a comment of the form // ERROR "regexp". If the compiler generates
|
|
# an error for a line which has no such comment, this script will report
|
|
# an error. Likewise if the compiler does not generate an error for a
|
|
# line which has a comment, or if the error message does not match the
|
|
# <regexp>. The <regexp> syntax is Perl but its best to stick to egrep.
|
|
|
|
use POSIX;
|
|
|
|
if(@ARGV < 1) {
|
|
print STDERR "Usage: errchk COMPILER [OPTS] SOURCEFILES\n";
|
|
exit 1;
|
|
}
|
|
|
|
# Grab SOURCEFILES
|
|
foreach(reverse 0 .. @ARGV-1) {
|
|
unless($ARGV[$_] =~ /\.go$/) {
|
|
@file = @ARGV[$_+1 .. @ARGV-1];
|
|
last;
|
|
}
|
|
}
|
|
|
|
foreach $file (@file) {
|
|
open(SRC, $file) || die "BUG: errchk: open $file: $!";
|
|
$src{$file} = [<SRC>];
|
|
close(SRC);
|
|
}
|
|
|
|
# Run command
|
|
$cmd = join(' ', @ARGV);
|
|
open(CMD, "exec $cmd </dev/null 2>&1 |") || die "BUG: errchk: run $cmd: $!";
|
|
|
|
# 6g error messages continue onto additional lines with leading tabs.
|
|
# Split the output at the beginning of each line that doesn't begin with a tab.
|
|
$out = join('', <CMD>);
|
|
@out = split(/^(?!\t)/m, $out);
|
|
|
|
close CMD;
|
|
|
|
if($? == 0) {
|
|
print STDERR "BUG: errchk: command succeeded unexpectedly\n";
|
|
print STDERR @out;
|
|
exit 0;
|
|
}
|
|
|
|
if(!WIFEXITED($?)) {
|
|
print STDERR "BUG: errchk: compiler crashed\n";
|
|
print STDERR @out, "\n";
|
|
exit 0;
|
|
}
|
|
|
|
sub bug() {
|
|
if(!$bug++) {
|
|
print STDERR "BUG: ";
|
|
}
|
|
}
|
|
|
|
sub chk {
|
|
my $file = shift;
|
|
my $line = 0;
|
|
my $regexp;
|
|
my @errmsg;
|
|
my @match;
|
|
foreach my $src (@{$src{$file}}) {
|
|
$line++;
|
|
next if $src =~ m|////|; # double comment disables ERROR
|
|
next unless $src =~ m|// (GC_)?ERROR (.*)|;
|
|
$regexp = $2;
|
|
if($regexp !~ /^"([^"]*)"/) {
|
|
print STDERR "$file:$line: malformed regexp\n";
|
|
next;
|
|
}
|
|
$regexp = $1;
|
|
|
|
@errmsg = grep { /$file:$line[:[]/ } @out;
|
|
@out = grep { !/$file:$line[:[]/ } @out;
|
|
if(@errmsg == 0) {
|
|
bug();
|
|
print STDERR "errchk: $file:$line: missing expected error: '$regexp'\n";
|
|
next;
|
|
}
|
|
@match = grep { /$regexp/ } @errmsg;
|
|
if(@match == 0) {
|
|
bug();
|
|
print STDERR "errchk: $file:$line: error message does not match '$regexp'\n";
|
|
next;
|
|
}
|
|
}
|
|
}
|
|
|
|
foreach $file (@file) {
|
|
chk($file)
|
|
}
|
|
|
|
if(@out != 0) {
|
|
bug();
|
|
print STDERR "errchk: unmatched error messages:\n";
|
|
print STDERR "==================================================\n";
|
|
print STDERR @out;
|
|
print STDERR "==================================================\n";
|
|
}
|
|
|
|
exit 0;
|