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Bug#894302: Re[2]: g++-7: Compiler generates wrong code with warning options



On Sun, 6 May 2018 13:42:48 +0200 Matthias Klose <doko@debian.org> wrote:

MK> I am not aware of any Debian local patches which could trigger that.  Please
MK> could you check if you can reproduce this with GCC 8 as well?

 I can't reproduce the problem with the minimized test case using gcc 8
from Sid (8.1.0-1). As an aside, gcc 8 also produces much smaller (less
than 50%) assembly and object code from the same files compared to gcc 7,
which surprised me. FWIW I can still reproduce the problem with the
latest g++-7 (7.3.0-17) in exactly the same way as originally reported for
7.2.

 The original problem, in the real program I was working on, only appeared
when using MinGW, so I can't [easily] test whether it is still present or
not as there is no gcc-mingw-w64 8 in Debian yet, but I'll do it when it
becomes available.

 Thanks for looking into this,
VZ

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