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Message-ID: <1295998941.4272196.1451543795605.JavaMail.yahoo@mail.yahoo.com>
Date: Thu, 31 Dec 2015 06:36:35 +0000 (UTC)
From: Guided Muscle <atguarded-gizmo@...oo.com>
To:  <musl@...ts.openwall.com>
Subject: Re: Musl bug, or, am I losing my mind?

Thanks all.
I have the strace outputs for the two ends of the pipe. However, I don;t know what to do with the files. What are the essential parts that I should email to this fine group?

BTW, the files are rather large.
Thank you.
--
GM

===== tail lua_strace.txt ==
write(1, "23752375237523752375237523752375"..., 15360) = 15360
write(1, "23752375237523752375237523752375"..., 492) = 492
write(1, "+7,20957:key5238->value523852385"..., 5120) = 5120
write(1, "23852385238523852385238523852385"..., 15360) = 15360
write(1, "23852385238523852385238523852385"..., 496) = 496
write(1, "+7,20961:key5239->value523952395"..., 5120) = 5120
write(1, "23952395239523952395239523952395"..., 15360) = 15360
write(1, "23952395239523952395239523952395"..., 500) = -1 EPIPE (Broken pipe)
--- stopped by SIGPIPE ---
+++ killed by SIGPIPE +++

===== tail cdb_strace.txt ==
write(3, "36523652365236523652365236523652"..., 16384) = 16384
readv(0, [{"", 0}, {"+7,20953:key5237->value523752375"..., 1024}], 2) = 1024
readv(0, [{"23752375237523752375237523752375"..., 19946}, {"7\n,20953:key5237->value523752375"..., 1024}], 2) = 19948
write(3, "36523652365236523652365236523652"..., 4096) = 4096
write(3, "37523752375237523752375237523752"..., 16384) = 16384
readv(0, [{"", 0}, {"+7,20957:key5238->value523852385"..., 1024}], 2) = 1024
readv(0, [{"23852385238523852385238523852385"..., 19950}, {"23852385238523852385238523852385"..., 1024}], 2) = 19952
writev(2, [{"cdb: (stdin): bad format\n", 25}, {NULL, 0}], 2) = 25
exit_group(2)                           = ?
+++ exited with 2 +++
==
--------------------------------------------
On Wed, 12/30/15, Rich Felker <dalias@...c.org> wrote:

 Subject: Re: [musl] Musl bug, or, am I losing my mind?
 To: musl@...ts.openwall.com
 Date: Wednesday, December 30, 2015, 11:07 PM
 
 On Thu, Dec 31, 2015 at
 04:10:02AM +0100, Szabolcs Nagy wrote:
 >
 * Szabolcs Nagy <nsz@...t70.net>
 [2015-12-30 22:28:33 +0100]:
 > > *
 Guided Muscle <atguarded-gizmo@...oo.com>
 [2015-12-30 20:04:41 +0000]:
 > > >
 cat o.txt | cdb -c c.cdb  
 > > >
 FAILED: cdb: (stdin): bad format
 > >
 > 
 > > > However 
 > > > PASS: cdb -c c.cdb < o.txt
 > > 
 > > my guess
 is that cdb does not handle short reads properly
 > > 
 > > but you
 can see what's going on with strace
 >
 
 > another guess: if this is a musl based
 system
 > then there was a gcc bug that
 broke fflush at
 > exit so cat would
 truncate the output.
 > 
 > again strace can tell if that is the
 case.
 
 "On Debian
 8" is probably not a musl-based cat.
 
 Rich

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