[Bug default/23596] New: Analyzing libLLVM and libclang takes way too much memory

["bochecha at daitauha dot fr" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=23596

            Bug ID: 23596
           Summary: Analyzing libLLVM and libclang takes way too much
                    memory
           Product: libabigail
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: default
          Assignee: dodji at redhat dot com
          Reporter: bochecha at daitauha dot fr
                CC: libabigail at sourceware dot org
  Target Milestone: ---

On my laptop I have 12GB of RAM, plus 4GB of swap.

When running abidiff on two different versions of libLLVM or libclang, all my
RAM gets exhausted, then all my swap, completely freezing my laptop under the
load, forcing me to do a hard-poweroff. (the OOM killer doesn't even seem to be
able to do its job)

Dodji said it might be possible to have some default suppressions for those
libs, with `drop = true` so that libabigail would ignore some private symbols,
which could help with the memory consumption.

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