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From: Philipp Stephani
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Subject: bug#47951: 28.0.50; Recent seccomp changes break compilation in Docker
Date: Thu, 22 Apr 2021 16:17:32 +0200
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Am Do., 22. Apr. 2021 um 15:44 Uhr schrieb :
>
>
> Hi,
>
> Since the recent changes introduced by Philipp Stephani on seccomp (around
> commit be8328acf9aa464f848e682e63e417a18529af9e), compiling Emacs from within a
> Docker container fails.
>
> The reported error is:
>
> seccomp-filter.c:168:11: error: static_assert expression is not an integral constant expression
> verify ((uintptr_t) NULL == 0);
> ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
> ../lib/verify.h:273:32: note: expanded from macro 'verify'
> # define verify(R) _GL_VERIFY (R, "verify (" #R ")", -)
> ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
> ../lib/verify.h:213:57: note: expanded from macro '_GL_VERIFY'
> # define _GL_VERIFY(R, DIAGNOSTIC, ...) _Static_assert (R, DIAGNOSTIC)
> ^
> seccomp-filter.c:168:11: note: cast that performs the conversions of a reinterpret_cast is not allowed in a constant expression
Looks like the compiler is right, and mine is a bit too lenient. I've
hopefully fixed this with commit
aaf6b6bf80805d18180e1c16350e9473716f5915.