Intermittent segmentation fault when building libbitcoin_util_a-random.o on aarch64 #17481

Looks like a one-off, but dropping here nonetheless. Excerpt:

  CXXLD    libunivalue.la
arm-linux-gnueabihf-ar: `u' modifier ignored since `D' is the default (see `U')
make[3]: Leaving directory '/home/travis/build/MarcoFalke/bitcoin-core/build/bitcoin-arm-linux-gnueabihf/src/univalue'
  CXX      interfaces/libbitcoin_util_a-handler.o
  CXX      libbitcoin_util_a-logging.o
  CXX      libbitcoin_util_a-random.o
  CXX      rpc/libbitcoin_util_a-request.o
  CXX      support/libbitcoin_util_a-cleanse.o
  CXX      libbitcoin_util_a-sync.o
  CXX      libbitcoin_util_a-threadinterrupt.o
arm-linux-gnueabihf-g++: internal compiler error: Segmentation fault (program cc1plus)
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-7/README.Bugs> for instructions.
Makefile:8571: recipe for target 'libbitcoin_util_a-random.o' failed
make[2]: *** [libbitcoin_util_a-random.o] Error 4
make[2]: *** Waiting for unfinished jobs....
make[2]: Leaving directory '/home/travis/build/MarcoFalke/bitcoin-core/build/bitcoin-arm-linux-gnueabihf/src'
Makefile:14372: recipe for target 'install-recursive' failed
make[1]: Leaving directory '/home/travis/build/MarcoFalke/bitcoin-core/build/bitcoin-arm-linux-gnueabihf/src'
make[1]: *** [install-recursive] Error 1
Makefile:775: recipe for target 'install-recursive' failed
make: *** [install-recursive] Error 1

See https://travis-ci.org/MarcoFalke/bitcoin-core/jobs/610493386#L2337

Compiler segmentation faults, especially intermittent ones, are almost always due to hardware failures.

Though thinking of it,—gcc 7 is pretty old. Don't we use gcc 8 for binaries?

Compiler segmentation faults, especially intermittent ones, are almost always due to hardware failures.

Ok, closing for now.

gcc7 is the default in bionic: https://packages.ubuntu.com/bionic/g++