Re: [PATCH] verify: avoid __builtin_assume

[Bruno Haible]

Paul Eggert wrote:
> It’s not known whether
> the crash is due is a Clang bug or a portability bug in GNU Emacs.

Since around the time I added the __builtin_assume use in verify.h,
the gnulib integration test that Tim Rühsen maintains started to
occasionally fail - only in the clang/Debian run, not in the gcc/Debian
run. See <https://gitlab.com/gnulib/gnulib-ci/-/jobs>.

I say "around the time", since this integration test runs only once
a week.

I tried to reproduce locally, but couldn't - in my local build,
it succeeded.

The actual failure is a
  FAIL: test-regex
during "make check".

Like Emacs, the regex code is quite complicated, so it is possible
that both the Emacs crash and the regex failure are caused by the
same clang bug.

Let's see how the gnulib integration test will react to the revert...

Bruno