[Bug ld/23428] ld does not put program headers in a code-only load segment

[evangelos at foutrelis dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=23428

--- Comment #11 from Evangelos Foutras <evangelos at foutrelis dot com> ---
Created attachment 11174
  --> https://sourceware.org/bugzilla/attachment.cgi?id=11174&action=edit
Test case with Arch's and Debian's GCC-provided crt{begin,end}.o

(In reply to nsz from comment #10)
> i'd try to verify that the right ld is used (e.g. strace -f -e execve
> musl-gcc ...)
> then i'd try to reproduce the issue outside of musl-gcc (e.g. manually
> invoking
> ld with the options seen in the strace and look for the NOTE program header)

Thanks for the suggestion. I was able to reduce my test case to something that
is reproducible on both Arch and Debian.

The attached test case indicates that it's some difference between Debian's and
Arch's crt{begin,end}.o (as provided by GCC) that's causing ld to add the NOTE
program header and .note.gnu.property section to the produced binary.

Comparing them using 'objdump -h', I notice that Arch's crt{begin,end}.o have a
.note.gnu.property section and Debian's don't. If I use 'objcopy -R
.note.gnu.property' on the Arch ones, then those produce a working executable
too!

Does the above indicate that the fix to binutils needs to be tweaked?

=================================
[pr23428-test]$ make
cc    -c -o test.o test.c
ld -static -o test-arch arch-crts/* arch-musl/* test.o
ld -static -o test-debian debian-crts/* arch-musl/* test.o

pr23428-test$ grep gnu.property test-*
Binary file test-debian matches

[pr23428-test]$ ./test-debian 
[pr23428-test]$ ./test-arch 
Segmentation fault (core dumped)

[pr23428-test]$ objcopy -R .note.gnu.property arch-crts/crtbegin.o
[pr23428-test]$ objcopy -R .note.gnu.property arch-crts/crtend.o
[pr23428-test]$ make -Bs test-arch
[pr23428-test]$ gdb -q -ex run ./test-arch 
Reading symbols from ./test-arch...(no debugging symbols found)...done.
Starting program: /home/../desktop/pr23428-test/test-arch 
[Inferior 1 (process 17284) exited normally]
=================================

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