[Bug gold/27303] gold/testsuite/initpri3. test fails on gold and lld, passes on bfd. Which one is correct?

[ccoutant at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=27303

Cary Coutant <ccoutant at gmail dot com> changed:

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                 CC|                            |ccoutant at gmail dot com

--- Comment #2 from Cary Coutant <ccoutant at gmail dot com> ---
I haven't yet managed to get a clean build of GCC 11 to try to reproduce, but I
do have a suspicion. Gold reverses the .ctors entries in .init_array, after
applying relocations, but it does not attempt to reverse any dynamic
relocations. That's normally not an issue, as we shouldn't have dynamic
relocations for entries in the .ctors sections, but there might be something
forcing the linker to create them. (The clue is that you had to start the
process in gdb before printing the .init_array entries.)

Please attach the output of:

readelf -rsW initpri3.o

readelf -rW initpri3a # (or ig from your example)

I'm tempted to remove the whole --ctors-in-init-array option and this test
case. GCC hasn't used the .ctors section in years now, as far as I know.

But I'd like to understand what's causing this failure. If the cause is dynamic
relocations, I'd like to understand what's causing the linker to generate them.

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