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Message-ID: <20151231114258.GC23362@port70.net>
Date: Thu, 31 Dec 2015 12:42:58 +0100
From: Szabolcs Nagy <nsz@...t70.net>
To: musl@...ts.openwall.com
Subject: Re: Musl bug, or, am I losing my mind?
* Guided Muscle <atguarded-gizmo@...oo.com> [2015-12-31 06:36:35 +0000]:
> 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
cdb reads 1024+19952 = 20976 bytes
which is a 18 byte header + 20957 byte value = 20975 bytes
so it did not read enough to determine that the format is wrong
but it stopped parsing
so it does not do the input buffering correctly
you need to check the code how it parses the input,
if it uses libc functions (e.g. getline) then it might
be a musl bug otherwise it's just a cdb bug.
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