Bug#946792: Acknowledgement (gcc-9: Buffer overflow bug introduced by gcc-search-prefixed-as-ld.diff)

[YunQiang Su <wzssyqa@gmail.com>]

On Tue, 17 Dec 2019 13:08:37 +0100 John Paul Adrian Glaubitz
<glaubitz@physik.fu-berlin.de> wrote:
> Control: tags -1 +patch
>
> Attaching debdiff which incorporates the changes :).

strlen (DEFAULT_REAL_TARGET_MACHINE) + 2
is not enough here.

In fact in some cases, DEFAULT_REAL_TARGET_MACHINE may have even less space than
   multiarch_suffix
for example:
   mipsel-linux-gnu-9 -mabi=64
DEFAULT_REAL_TARGET_MACHINE is mipsel-linux-gnu/9/
while multiarch_suffix is
   mips64el-linux-gnuabi64
In fact we need:
  MAX (strlen(DEFAULT_REAL_TARGET_MACHINE), multiarch_len) + 2

>
> Adrian
>
> --
>  .''`.  John Paul Adrian Glaubitz
> : :' :  Debian Developer - glaubitz@debian.org
> `. `'   Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
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