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From: "sjames at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/113915] [14 regression] glibc miscompiled for armv7a
 since r14-4365-g0731889c026bfe
Date: Wed, 14 Feb 2024 02:42:16 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113915

--- Comment #1 from Sam James <sjames at gcc dot gnu.org> ---
glibc's WAIT_FOR_DEBUGGER support for tests seems broken, as it drops me in=
to a
waiting process with:
```
/var/tmp/portage/sys-libs/glibc-2.38-r10/work/build-arm-armv7a-unknown-linu=
x-gnueabihf-nptl/posix/tst-getopt-cancel.gdb:6:
Error in sourced command file:
'wait_for_debugger' has unknown type; cast it to its declared type
```

Can't manually set wait_for_debugger either. Whatever. Trying manually, we =
get
(without very good debugging symbols yet):
```
Thread 2.1 "ld-linux-armhf." received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0xf7e33020 (LWP 4162410)]
0xf7fcc524 in _dl_find_object_update () from
/var/tmp/portage/sys-libs/glibc-2.38-r10/work/build-arm-armv7a-unknown-linu=
x-gnueabihf-nptl/elf/ld-linux-armhf.so.3
(gdb) bt
#0  0xf7fcc524 in _dl_find_object_update () from
/var/tmp/portage/sys-libs/glibc-2.38-r10/work/build-arm-armv7a-unknown-linu=
x-gnueabihf-nptl/elf/ld-linux-armhf.so.3
#1  0xf7fd4320 in dl_open_worker_begin () from
/var/tmp/portage/sys-libs/glibc-2.38-r10/work/build-arm-armv7a-unknown-linu=
x-gnueabihf-nptl/elf/ld-linux-armhf.so.3
#2  0xf7fc8f68 in _dl_catch_exception () from
/var/tmp/portage/sys-libs/glibc-2.38-r10/work/build-arm-armv7a-unknown-linu=
x-gnueabihf-nptl/elf/ld-linux-armhf.so.3
#3  0xf7fd37c4 in dl_open_worker () from
/var/tmp/portage/sys-libs/glibc-2.38-r10/work/build-arm-armv7a-unknown-linu=
x-gnueabihf-nptl/elf/ld-linux-armhf.so.3
#4  0xf7fc8f68 in _dl_catch_exception () from
/var/tmp/portage/sys-libs/glibc-2.38-r10/work/build-arm-armv7a-unknown-linu=
x-gnueabihf-nptl/elf/ld-linux-armhf.so.3
#5  0xf7fd3b94 in _dl_open () from
/var/tmp/portage/sys-libs/glibc-2.38-r10/work/build-arm-armv7a-unknown-linu=
x-gnueabihf-nptl/elf/ld-linux-armhf.so.3
#6  0xf7f80528 in do_dlopen () from
/var/tmp/portage/sys-libs/glibc-2.38-r10/work/build-arm-armv7a-unknown-linu=
x-gnueabihf-nptl/libc.so.6
#7  0xf7fc8f68 in _dl_catch_exception () from
/var/tmp/portage/sys-libs/glibc-2.38-r10/work/build-arm-armv7a-unknown-linu=
x-gnueabihf-nptl/elf/ld-linux-armhf.so.3
#8  0xf7fc90c4 in _dl_catch_error () from
/var/tmp/portage/sys-libs/glibc-2.38-r10/work/build-arm-armv7a-unknown-linu=
x-gnueabihf-nptl/elf/ld-linux-armhf.so.3
#9  0xf7f8044c in dlerror_run () from
/var/tmp/portage/sys-libs/glibc-2.38-r10/work/build-arm-armv7a-unknown-linu=
x-gnueabihf-nptl/libc.so.6
#10 0xf7f80744 in __libc_dlopen_mode () from
/var/tmp/portage/sys-libs/glibc-2.38-r10/work/build-arm-armv7a-unknown-linu=
x-gnueabihf-nptl/libc.so.6
#11 0xf7f3601c in __libc_unwind_link_get () from
/var/tmp/portage/sys-libs/glibc-2.38-r10/work/build-arm-armv7a-unknown-linu=
x-gnueabihf-nptl/libc.so.6
#12 0xf7eb21a0 in pthread_cancel@GLIBC_2.4 () from
/var/tmp/portage/sys-libs/glibc-2.38-r10/work/build-arm-armv7a-unknown-linu=
x-gnueabihf-nptl/libc.so.6
#13 0xf7fc2828 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb)
```=