Frank Steinmetzger <war...@gmx.de> writes:

> On Mon, Mar 12, 2018 at 01:40:48AM +0100, David Kastrup wrote:
>> Frank Steinmetzger <war...@gmx.de> writes:
>> > […]
>> > This snippet causes Lilypond to crash on my machines. Both run Gentoo Linux
>> > with identical versions, namely Lilypoind 2.18.2. I installed 2.18.2 on an
>> > Ubuntu and an Arch installation. Both of them have no problem. :'-(
>> 
>> You are likely compiling 2.18.2 with a compiler version that is too new
>> (and optimises out a this == 0 comparison).  There is an issue/patch in
>> the 2.19 development fixing this but you might find a compiler option
>> that leaves off this optimization.
>
> FWIW: I’m on gcc 6.4.0, the compiler flags used to build Lilypond are:
> -march=native -O2 -fomit-frame-pointer -pipe -ggdb
> AFAIR, -O2 is the default on a Gentoo system.

All utterly irrelevant.  You'd need something like
-fno-delete-null-pointer-check (I am not sure this is the actual option:
I cannot find something more specific in the manual).

> There is 2.19.80 available in the repository, so I could give it a try easily.

Probably the easiest way out.

-- 
David Kastrup

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