[Bug lto/83816] [7 Regression] lto1: internal compiler error: compressed stream: data error

["rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83816

Richard Biener <rguenth at gcc dot gnu.org> changed:

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

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
It's a message from zlib:

          status = inflate (&in_stream, Z_SYNC_FLUSH);
          if (status != Z_OK && status != Z_STREAM_END)
            internal_error ("compressed stream: %s", zError (status));

not sure what 'data error' means but I think the stream is corrupt.  Can you
try using valgrind on a reproducer to see if we have a wild memory write/read
somewhere?  And double-check your memory/disk?