97 lines
3.1 KiB
Diff
97 lines
3.1 KiB
Diff
From b3dd0aba3d2bf0b22280303ef6f068e976e31888 Mon Sep 17 00:00:00 2001
|
|
From: Father Chrysostomos <sprout@cpan.org>
|
|
Date: Sat, 2 Jul 2016 00:08:48 -0700
|
|
Subject: [PATCH] [perl #128508] Fix line numbers with perl -x
|
|
MIME-Version: 1.0
|
|
Content-Type: text/plain; charset=UTF-8
|
|
Content-Transfer-Encoding: 8bit
|
|
|
|
When lex_start is invoked with an SV and a handle pointer, it expects
|
|
the SV to contain the beginning of the code to be parsed. The handle
|
|
will be read from for subsequent code.
|
|
|
|
The -x command line option happens to invoke lex_start with two non-
|
|
null pointers like this (a line and a handle), since, to find the
|
|
#!perl line, it has to read that first line out of the file handle.
|
|
|
|
There is a line of code in lex_start that adds "\n;" to the buffer
|
|
goes back to 8990e30710 (perl 5.0 alpha 6) and string eval fails
|
|
catastrophically without it.
|
|
|
|
As of v5.19.1-485-g2179133 multiple lines are supported in the current
|
|
parsing buffer (PL_linestr) when there is a file handle, and as of
|
|
v5.19.3-63-gbf1b738 the line number is correctly incremented when the
|
|
parser goes past a newline.
|
|
|
|
So, for -x, "#!perl\n" turns into "#!perl\n\n" (the final ; is skipped
|
|
as of v5.19.3-63-gbf1b738 if there is a handle). That throws line
|
|
numbers off by one.
|
|
|
|
In the case where we have a string to parse and a file handle, the
|
|
extra "\n;" added to the end of the buffer turns out to be completely
|
|
unnecessary. So this commit makes it conditional on rsfp.
|
|
|
|
The existing tests for -x are quite exotic. I have made no effort to
|
|
make them less so.
|
|
|
|
Signed-off-by: Petr Písař <ppisar@redhat.com>
|
|
---
|
|
t/run/switchx.aux | 7 ++++---
|
|
t/run/switchx.t | 4 ++--
|
|
toke.c | 3 ++-
|
|
3 files changed, 8 insertions(+), 6 deletions(-)
|
|
|
|
diff --git a/t/run/switchx.aux b/t/run/switchx.aux
|
|
index b59df4a..106b2f7 100644
|
|
--- a/t/run/switchx.aux
|
|
+++ b/t/run/switchx.aux
|
|
@@ -17,11 +17,12 @@ still not perl
|
|
|
|
#!/some/path/that/leads/to/perl -l
|
|
|
|
-print "1..7";
|
|
+print "1..8";
|
|
+print "ok 1 - Correct line number" if __LINE__ == 4;
|
|
if (-f 'run/switchx.aux') {
|
|
- print "ok 1 - Test file exists";
|
|
+ print "ok 2 - Test file exists";
|
|
}
|
|
-print "ok 2 - Test file utilized";
|
|
+print "ok 3 - Test file utilized";
|
|
# other tests are in switchx2.aux
|
|
|
|
__END__
|
|
diff --git a/t/run/switchx.t b/t/run/switchx.t
|
|
index bcea3d0..4e57d04 100644
|
|
--- a/t/run/switchx.t
|
|
+++ b/t/run/switchx.t
|
|
@@ -15,9 +15,9 @@ print runperl( switches => ['-x'],
|
|
# Test '-xdir'
|
|
print runperl( switches => ['-x./run'],
|
|
progfile => 'run/switchx2.aux',
|
|
- args => [ 3 ] );
|
|
+ args => [ 4 ] );
|
|
|
|
-curr_test(5);
|
|
+curr_test(6);
|
|
|
|
# Test the error message for not found
|
|
like(runperl(switches => ['-x'], progfile => 'run/switchx3.aux', stderr => 1),
|
|
diff --git a/toke.c b/toke.c
|
|
index aebeebb..7e77fae 100644
|
|
--- a/toke.c
|
|
+++ b/toke.c
|
|
@@ -723,7 +723,8 @@ Perl_lex_start(pTHX_ SV *line, PerlIO *rsfp, U32 flags)
|
|
parser->linestr = flags & LEX_START_COPIED
|
|
? SvREFCNT_inc_simple_NN(line)
|
|
: newSVpvn_flags(s, len, SvUTF8(line));
|
|
- sv_catpvn(parser->linestr, "\n;", rsfp ? 1 : 2);
|
|
+ if (!rsfp)
|
|
+ sv_catpvs(parser->linestr, "\n;");
|
|
} else {
|
|
parser->linestr = newSVpvn("\n;", rsfp ? 1 : 2);
|
|
}
|
|
--
|
|
2.5.5
|
|
|