[Bug macros/29034] Can't print macros defined on the command-line with binaries built with clang

["vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=29034

Tom de Vries <vries at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |vries at gcc dot gnu.org

--- Comment #4 from Tom de Vries <vries at gcc dot gnu.org> ---
(In reply to Andrew Burgess from comment #3)
> Given we now have a work around for this issue in GDB, could we close this
> bug?

AFAIU, what remains to be done is to wait for lldb to fix this issue, and to
limit the workaround to the broken versions.

I'm not sure if that is enough reason to keep this PR open.

The issue is already documented in the code like this:
...
              /* Clang, until the current version, misplaces some macro         
                 definitions - such as ones defined in the command line,        
                 putting them after the last DW_MACRO_end_file instead of       
                 before the first DW_MACRO_start_file.  Since at the time       
                 of writing there is no clang version with this bug fixed,      
                 we check for any clang producer.  This should be changed       
                 to producer_is_clang_lt_XX when possible. */
...

I propose to close the PR.  If we really want a PR open for this, we could file
a spin-off one, with for instance a tag in the subject "blocked on llvm" or
some such.

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