[Bug gdb/20645] Build with "-fdebug-types-section" -> Dwarf Error: wrong version in compilation unit header

["internet at 123gen dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=20645

--- Comment #1 from Zouzou <internet at 123gen dot com> ---
I went through the relevant gdb/dwarf2read.c code as well as COFF handlers in
bfd/ but couldn't spot anything obvious, though I did see a few "fixme"s here
and there in bfd/...

Running "objdump --dwarf=info test.exe" also shows errors:
    objdump: Warning: Invalid pointer size (0) in compunit header, using 4
instead
    objdump: Warning: Debug info is corrupted, length of CU at 53 extends
beyond end of section (length = 5300)

Attached, the output of "objdump --dwarf=info" on a regular program (built with
"-g" only) and on the same program built with the .debug_types section.
(Only the .debug_types one produces the above messages.)

I still don't know where the blame lies though; could be in the way GDB /
objdump parse the data and could also be in the way GCC emits it.

Should I report this on the GCC tracker?
Thanks

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