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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug rust/26197] rust FAILs with rustc 1.36.0 and llvm 7
Date: Wed, 12 Aug 2020 21:31:36 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D26197

--- Comment #18 from Tom Tromey <tromey at sourceware dot org> ---
(In reply to Tom de Vries from comment #17)

> (gdb) print str_some^M
> That operation is not available on integers of more than 8 bytes.^M
> (gdb) FAIL: gdb.rust/simple.exp: print str_some
> print str_none^M
> That operation is not available on integers of more than 8 bytes.^M
> (gdb) FAIL: gdb.rust/simple.exp: print str_none
>   ...
> (gdb) print custom_some^M
> That operation is not available on integers of more than 8 bytes.^M
> (gdb) FAIL: gdb.rust/simple.exp: print custom_some
> print custom_none^M
> That operation is not available on integers of more than 8 bytes.^M
> (gdb) FAIL: gdb.rust/simple.exp: print custom_none

I checked out commit 9852ceef -- which came before the variant part rewrite.
This version didn't work for these tests either:

(gdb) print str_some
$1 =3D <error reading variable>
(gdb) print str_none
$2 =3D <error reading variable>
(gdb) print custom_some=20
$3 =3D <error reading variable>
(gdb) print custom_none
$4 =3D <error reading variable>

Then I checked out the version before a1520ad8fc (see comment #6).
However, this one crashes trying to load the executable, which
maybe is why that patch exists?  (I don't remember the context any more.)

Do you know of a version that passes these tests with this executable
or rust compiler version?

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