perl/perl-5.33.0-make-fh-error-report-errors-from-both-input-and-outp.patch
2020-08-05 12:59:29 +02:00

88 lines
2.4 KiB
Diff

From 89341f87f9fc65c4d7133e497bb04586e86b8052 Mon Sep 17 00:00:00 2001
From: Tony Cook <tony@develop-help.com>
Date: Tue, 12 May 2020 10:29:17 +1000
Subject: [PATCH 1/2] make $fh->error report errors from both input and output
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
For character devices and sockets perl uses separate PerlIO objects
for input and output so they can be buffered separately.
The IO::Handle::error() method only checked the input stream, so
if a write error occurs error() would still returned false.
Change this so both the input and output streams are checked.
fixes #6799
Signed-off-by: Petr Písař <ppisar@redhat.com>
---
dist/IO/IO.xs | 12 ++++++++----
dist/IO/t/io_xs.t | 19 ++++++++++++++++++-
2 files changed, 26 insertions(+), 5 deletions(-)
diff --git a/dist/IO/IO.xs b/dist/IO/IO.xs
index 68b7352c38..99d523d2c1 100644
--- a/dist/IO/IO.xs
+++ b/dist/IO/IO.xs
@@ -389,13 +389,17 @@ ungetc(handle, c)
int
ferror(handle)
- InputStream handle
+ SV * handle
+ PREINIT:
+ IO *io = sv_2io(handle);
+ InputStream in = IoIFP(io);
+ OutputStream out = IoOFP(io);
CODE:
- if (handle)
+ if (in)
#ifdef PerlIO
- RETVAL = PerlIO_error(handle);
+ RETVAL = PerlIO_error(in) || (in != out && PerlIO_error(out));
#else
- RETVAL = ferror(handle);
+ RETVAL = ferror(in) || (in != out && ferror(out));
#endif
else {
RETVAL = -1;
diff --git a/dist/IO/t/io_xs.t b/dist/IO/t/io_xs.t
index 1e3c49a4a7..f890e92558 100644
--- a/dist/IO/t/io_xs.t
+++ b/dist/IO/t/io_xs.t
@@ -11,7 +11,7 @@ BEGIN {
}
}
-use Test::More tests => 5;
+use Test::More tests => 7;
use IO::File;
use IO::Seekable;
@@ -50,3 +50,20 @@ SKIP:
ok($fh->sync, "sync to a read only handle")
or diag "sync(): ", $!;
}
+
+
+SKIP: {
+ # gh 6799
+ #
+ # This isn't really a Linux/BSD specific test, but /dev/full is (I
+ # hope) reasonably well defined on these. Patches welcome if your platform
+ # also supports it (or something like it)
+ skip "no /dev/full or not a /dev/full platform", 2
+ unless $^O =~ /^(linux|netbsd|freebsd)$/ && -c "/dev/full";
+ open my $fh, ">", "/dev/full"
+ or skip "Could not open /dev/full: $!", 2;
+ $fh->print("a" x 1024);
+ ok(!$fh->flush, "should fail to flush");
+ ok($fh->error, "stream should be in error");
+ close $fh; # silently ignore the error
+}
--
2.25.4