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

[thaniyarasu]

yesterday , i have upgraded ubuntu 15.04 to 15.10. 
and try to create a USB boot from ubuntu-15.10-server-amd64.iso

when i try to boot from that usb i got this error

attempting Boot From usb device 
SYSLINUX 6.03 EDD 20150813 Copyright (C) 1994-2014 H. Peter Anvin et al Boot error

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Title:
  "boot error" due to gcc v5 transition

Status in syslinux package in Ubuntu:
  Triaged

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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