[Bug gdb/23710] gdb is slow and memory hungry consuming debug generated with LTO by GCC

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=23710

Tom Tromey <tromey at sourceware dot org> changed:

           What    |Removed                     |Added
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                 CC|                            |tromey at sourceware dot org

--- Comment #20 from Tom Tromey <tromey at sourceware dot org> ---
Tom --

See https://sourceware.org/pipermail/gdb-patches/2021-June/179765.html
I found out that if the test case from this patch is changed
to use DW_LANG_C, it will fail.  (Of course I thinko'd that message
and wrote C++, but the test already uses C++...)

I also don't understand why the DWARF reader check is specific to C++.
It seems like any import of a CU could be skipped, since that CU
will be scanned separately anyway.

Furthermore, the skipping should probably also be done in the psymtab
reader, not just the full reader.

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