[Bug ld/30079] New: Mingw ld : linking against an import lib causes ld to abort() at compare_section in ldlang.c

[didier.smets at free dot fr]

https://sourceware.org/bugzilla/show_bug.cgi?id=30079

            Bug ID: 30079
           Summary: Mingw ld : linking against an import lib causes ld to
                    abort() at compare_section in ldlang.c
           Product: binutils
           Version: 2.39
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ld
          Assignee: unassigned at sourceware dot org
          Reporter: didier.smets at free dot fr
  Target Milestone: ---

Created attachment 14653
  --> https://sourceware.org/bugzilla/attachment.cgi?id=14653&action=edit
archive containing the four files needed to reproduce the bug

After an upgrade of my Debian machine (which for binutils means 2.35 -> 2.39),
I have encountered the following issue while building a project. Debian
packager has asked me to report upstream.

I have been able to trace the issue so that it can reproduced in a very simple
test
case (all needed files included as attachments - the datarefs.c is a tiny test
one, the XPLM_64.lib is a third party import lib).

Test:

Untar the attached archive (one C source + one import lib and corresponding two
header files) into a directory of your choice and issue :

/usr/bin/x86_64-w64-mingw32-gcc -shared -o datarefs.dll  datarefs.c -L . -l
:XPLM_64.lib

Yields :

/usr/bin/x86_64-w64-mingw32-ld: internal error: aborting at
./upstream/ld/ldlang.c:527 in compare_section
/usr/bin/x86_64-w64-mingw32-ld: please report this bug
collect2: error: ld returned 1 exit status

Notes after testing:

1) It works fine in Debian Bullseye (binutils-mingw 2.35).
2) It works fine in the non mingw build  (I mean with .so rather than .dll
output, but of course no import lib is needed in that case).
3) It works fine in mingw binutils 2.39 if in datarefs.c I comment out _all but
one_ (any of them) function.

Exact Debian package causing the issue:
Debian unstable package : binutils-mingw-w64-x86-64 2.39.90.20230110-1+10.3

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