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From d546938a7c8b111c463b733910db885b24724b42 Mon Sep 17 00:00:00 2001
From: Father Chrysostomos <sprout@cpan.org>
Date: Thu, 20 Sep 2012 06:24:25 -0700
Subject: [PATCH] require 1 << 2
MIME-Version: 1.0
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Port to 5.16.1:
commit c31f6d3b869d78bbd101e694fd3b384b47a77f6d
Author: Father Chrysostomos <sprout@cpan.org>
Date: Thu Sep 20 06:24:25 2012 -0700
[perl #105924] require 1 << 2
Setting PL_expect after force_next has no effect, as force_next
(called by force_version and force_word) picks up the current value of
PL_expect and arranges for it to be reset thereto after the forced
token is force-fed to the parser.
The KEY_require case should be setting PL_expect to XTERM (as it
already does) when there is no forced token (version or bareword),
because we expect a term after ‘require’, but to XOPERATOR when
there is a forced token, because we expect an operator after that
forced token.
Since the PL_expect assignment has no effect after force_next, we can
set it to XOPERATOR before calling potentially calling force_next, and
then to XTERM afterwards.
Loop exits had the same bug, so this fixes them all.
---
t/base/lex.t | 10 +++++++++-
toke.c | 6 ++++++
2 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/t/base/lex.t b/t/base/lex.t
index ce16ef1..c2a6cc3 100644
--- a/t/base/lex.t
+++ b/t/base/lex.t
@@ -1,6 +1,6 @@
#!./perl
-print "1..57\n";
+print "1..63\n";
$x = 'x';
@@ -273,3 +273,11 @@ $test++;
@a = (1,2,3);
print "not " unless($a[~~2] == 3);
print "ok 57\n";
+
+$test = 58;
+for(qw< require goto last next redo dump >) {
+ eval "sub { $_ foo << 2 }";
+ print "not " if $@;
+ print "ok ", $test++, " - [perl #105924] $_ WORD << ...\n";
+ print "# $@" if $@;
+}
diff --git a/toke.c b/toke.c
index 1d18550..aa2c3b6 100644
--- a/toke.c
+++ b/toke.c
@@ -7344,6 +7344,7 @@ Perl_yylex(pTHX)
UNI(OP_DBMCLOSE);
case KEY_dump:
+ PL_expect = XOPERATOR;
s = force_word(s,WORD,TRUE,FALSE,FALSE);
LOOPX(OP_DUMP);
@@ -7476,6 +7477,7 @@ Perl_yylex(pTHX)
LOP(OP_GREPSTART, XREF);
case KEY_goto:
+ PL_expect = XOPERATOR;
s = force_word(s,WORD,TRUE,FALSE,FALSE);
LOOPX(OP_GOTO);
@@ -7598,6 +7600,7 @@ Perl_yylex(pTHX)
LOP(OP_KILL,XTERM);
case KEY_last:
+ PL_expect = XOPERATOR;
s = force_word(s,WORD,TRUE,FALSE,FALSE);
LOOPX(OP_LAST);
@@ -7695,6 +7698,7 @@ Perl_yylex(pTHX)
OPERATOR(MY);
case KEY_next:
+ PL_expect = XOPERATOR;
s = force_word(s,WORD,TRUE,FALSE,FALSE);
LOOPX(OP_NEXT);
@@ -7880,6 +7884,7 @@ Perl_yylex(pTHX)
case KEY_require:
s = SKIPSPACE1(s);
+ PL_expect = XOPERATOR;
if (isDIGIT(*s)) {
s = force_version(s, FALSE);
}
@@ -7911,6 +7916,7 @@ Perl_yylex(pTHX)
UNI(OP_RESET);
case KEY_redo:
+ PL_expect = XOPERATOR;
s = force_word(s,WORD,TRUE,FALSE,FALSE);
LOOPX(OP_REDO);
--
1.7.11.4