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gdb internal-error in 'check-tcg' with gdb 8.1.1-0ubuntu1


From: Peter Maydell
Subject: gdb internal-error in 'check-tcg' with gdb 8.1.1-0ubuntu1
Date: Mon, 14 Dec 2020 11:13:02 +0000

My machine has suddenly started consistently failing 'make check-tcg'
like this, following an Ubuntu update of the gdb package from
"8.1-0ubuntu3.2" to "8.1.1-0ubuntu1":

make[2]: Entering directory
'/home/petmay01/linaro/qemu-for-merges/build/all-linux-static/tests/tcg/aarch64-linux-user'
timeout 60  /home/petmay01/linaro/qemu-for-merges/tests/guest-debug/run-test.py
--gdb /usr/bin/gdb-multiarch --qemu
/home/petmay01/linaro/qemu-for-merges/build/all-linux-static/qemu-aarch64
--qargs "" --bin sha1 --test
/home/petmay01/linaro/qemu-for-merges/tests/tcg/multiarch/gdbstub/sha1.py
>  run-gdbstub-sha1.out
/build/gdb-veKdC1/gdb-8.1.1/gdb/regcache.c:122: internal-error: void*
init_regcache_descr(gdbarch*): Assertion `MAX_REGISTER_SIZE >=
descr->sizeof_register[i]' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.

This is a bug, please report it.  For instructions, see:
<http://www.gnu.org/software/gdb/bugs/>.

Aborted (core dumped)
/home/petmay01/linaro/qemu-for-merges/tests/tcg/multiarch/Makefile.target:51:
recipe for target 'run-gdbstub-sha1' failed
make[2]: *** [run-gdbstub-sha1] Error 134
make[2]: Leaving directory
'/home/petmay01/linaro/qemu-for-merges/build/all-linux-static/tests/tcg/aarch64-linux-user'
/home/petmay01/linaro/qemu-for-merges/tests/tcg/Makefile.qemu:85:
recipe for target 'run-guest-tests' failed
make[1]: *** [run-guest-tests] Error 2
/home/petmay01/linaro/qemu-for-merges/tests/Makefile.include:61:
recipe for target 'run-tcg-tests-aarch64-linux-user' failed
make: *** [run-tcg-tests-aarch64-linux-user] Error 2


Any ideas ?

thanks
-- PMM



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