[Bug 1507002] Re: "boot error" due to gcc v5 transition

[Launchpad Bug Tracker]

This bug was fixed in the package syslinux - 3:6.03+dfsg-11ubuntu1

---------------
syslinux (3:6.03+dfsg-11ubuntu1) xenial; urgency=low

  [ Michael Terry ]
  * Merge from Debian unstable.  Remaining changes:
    - debian/control: build with default gcc, not gcc-4.9

  [ TJ <ubuntu at iam.tj> ]
  * d/p/0008-Fix-gcc-5-ALIGN-causing-Boot-error.patch:
    - Backport fix for gcc 5 ALIGN changes. (LP: #1507002)

syslinux (3:6.03+dfsg-11) unstable; urgency=low

  * Orphaning package.

syslinux (3:6.03+dfsg-10) unstable; urgency=medium

  * Building with gcc-4.9 (Closes: #795777).

syslinux (3:6.03+dfsg-9) unstable; urgency=low

  * Adding patch from upstream to fix unbootable images in certain
    conditions, e.g. when using gcc 5 (Closes: #795596).

 -- Michael Terry <mterry at ubuntu.com>  Tue, 22 Dec 2015 14:19:58 -0500

** Changed in: syslinux (Ubuntu)
       Status: Triaged => Fix Released

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https://bugs.launchpad.net/bugs/1507002

Title:
  "boot error" due to gcc v5 transition

Status in syslinux package in Ubuntu:
  Fix Released

Bug description:
  Today I upgraded to Ubuntu 15.10 (wily) from vivid and creating boot
  disks (USB, vfat) stopped working.

  I tried my best to find what's the problem, but I couldn't identify
  it. It looks like it's related to LP: #398241 (or the debian bug
  referred there)

  Essentially, I did

  1. create empty USB disk
  2. format as vfat (mkfs -t ... -- -F32 -n 'label')
  3. syslinux --install path/to/image -t 512
  4. boot a computer with it
  5. SYSLINUX 6.03 ... "boot error" <-- is displayed

  I then downgraded to syslinux 3:6.03+dfsg-5ubuntu1, did the same
  thing, and it worked again.

  I believe this is related to ldlinux.sys, ldlinux.c32, linux.c32,
  menu.c32,  or libutil.c32, since at least the machine boots to
  syslinux, it simply does not proceed to display my menu.

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