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* bug#45827: [aarch64] GCC 4.9.4 stack deallocation bug
@ 2021-01-12 22:01 Leo Famulari
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From: Leo Famulari @ 2021-01-12 22:01 UTC (permalink / raw)
  To: 45827

There was a bug in GCC 4.9.4 that could cause miscompilation, such that
the "compiler was freeing the function's stack frame prior to the end of
the function itself." [0]

The bug was observed to cause corruption of ext4 filesystems on the
aarch64 platform.

The upstream report is here:

Apparently this was fixed in GCC 5, but never backported to the 4.9

Should we fix it? We use GCC 4.9 to bootstrap the system in (gnu
packages commencement), and a handful of packages depend on it.


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2021-01-12 22:01 bug#45827: [aarch64] GCC 4.9.4 stack deallocation bug Leo Famulari

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