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From 1d31efef7dd4388fd606972e67bda3318e8838fe Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Dagfinn=20Ilmari=20Manns=C3=A5ker?= <ilmari@ilmari.org>
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Date: Tue, 21 May 2019 17:34:49 +0100
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Subject: [PATCH] Don't use PL_check[op_type] to check for filetets ops to
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stack
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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This breaks hooking the filetest ops' check function by modules like
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bareword::filehandles. Instead use the OP_IS_FILETEST() macro to decide
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check for filetest ops. Also add an OP_IS_STAT() macro for when we want
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to check for (l)stat as well as the filetest ops.
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c.f. https://rt.cpan.org/Ticket/Display.html?id=127073
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Signed-off-by: Petr Písař <ppisar@redhat.com>
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---
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op.c | 11 ++++-------
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op.h | 2 ++
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regen/opcodes | 1 +
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3 files changed, 7 insertions(+), 7 deletions(-)
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diff --git a/op.c b/op.c
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index 29181ba731..dba7ac7fea 100644
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--- a/op.c
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+++ b/op.c
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@@ -991,8 +991,7 @@ Perl_op_clear(pTHX_ OP *o)
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o->op_targ = 0;
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break;
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default:
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- if (!(o->op_flags & OPf_REF)
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- || (PL_check[o->op_type] != Perl_ck_ftst))
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+ if (!(o->op_flags & OPf_REF) || !OP_IS_STAT(o->op_type))
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break;
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/* FALLTHROUGH */
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case OP_GVSV:
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@@ -4413,8 +4412,7 @@ Perl_op_lvalue_flags(pTHX_ OP *o, I32 type, U32 flags)
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/* [20011101.069 (#7861)] File test operators interpret OPf_REF to mean that
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their argument is a filehandle; thus \stat(".") should not set
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it. AMS 20011102 */
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- if (type == OP_REFGEN &&
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- PL_check[o->op_type] == Perl_ck_ftst)
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+ if (type == OP_REFGEN && OP_IS_STAT(o->op_type))
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return o;
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if (type != OP_LEAVESUBLV)
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@@ -11696,9 +11694,8 @@ Perl_ck_ftst(pTHX_ OP *o)
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scalar((OP *) kid);
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if ((PL_hints & HINT_FILETEST_ACCESS) && OP_IS_FILETEST_ACCESS(o->op_type))
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o->op_private |= OPpFT_ACCESS;
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- if (type != OP_STAT && type != OP_LSTAT
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- && PL_check[kidtype] == Perl_ck_ftst
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- && kidtype != OP_STAT && kidtype != OP_LSTAT
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+ if (OP_IS_FILETEST(type)
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+ && OP_IS_FILETEST(kidtype)
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) {
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o->op_private |= OPpFT_STACKED;
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kid->op_private |= OPpFT_STACKING;
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diff --git a/op.h b/op.h
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index c9f05b2271..ad6cf7fe49 100644
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--- a/op.h
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+++ b/op.h
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@@ -1021,6 +1021,8 @@ C<sib> is non-null. For a higher-level interface, see C<L</op_sibling_splice>>.
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#define OP_TYPE_ISNT_AND_WASNT(o, type) \
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( (o) && OP_TYPE_ISNT_AND_WASNT_NN(o, type) )
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+/* should match anything that uses ck_ftst in regen/opcodes */
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+#define OP_IS_STAT(op) (OP_IS_FILETEST(op) || (op) == OP_LSTAT || (op) == OP_STAT)
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# define OpHAS_SIBLING(o) (cBOOL((o)->op_moresib))
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# define OpSIBLING(o) (0 + (o)->op_moresib ? (o)->op_sibparent : NULL)
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diff --git a/regen/opcodes b/regen/opcodes
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index b4bf904fdc..4e8236947a 100644
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--- a/regen/opcodes
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+++ b/regen/opcodes
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@@ -397,6 +397,7 @@ getsockname getsockname ck_fun is% Fs
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getpeername getpeername ck_fun is% Fs
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# Stat calls. OP_IS_FILETEST wants them consecutive.
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+# Also needs to match OP_IS_STAT() in op.h
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lstat lstat ck_ftst u- F?
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stat stat ck_ftst u- F?
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--
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2.20.1
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