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bug#22337: Breakage on amd64 when built with -O1 and higher

From: Andy Wingo
Subject: bug#22337: Breakage on amd64 when built with -O1 and higher
Date: Sun, 07 Aug 2016 13:19:28 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux)

On Sat 09 Jan 2016 15:57, address@hidden (Ludovic Courtès) writes:

> Andreas Metzler <address@hidden> skribis:
>> Debian used to build guile-2.0 without optimization, after changing to
>> -O2 random segfaults in guile-gnutls testsuite started to appear on
>> amd64.
> Are you sure the GnuTLS issue has anything to do with that?
> Guile has always been built with ‘-O2 -g’ by default, and building with
> ‘-O0’ has never really been supported (the VM engine could eat too much
> stack space and do silly things.)

Apparently this is still an issue.  Debian actually reverted to
compiling Guile with -O0:


Which is terrible of course.  Surely it is a bug in the Guile GnuTLS
bindings and not in Guile proper.  Compiling Guile with -O2 probably
holds on to less garbage; could it be that GnuTLS is erroneously not
making its data structures visible?


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