shiftNegativeLHS
ftp://ftp.de.debian.org/debian/pool/main/o/openjdk-11-jre-dcevm/openjdk-11-jre-dcevm_11.0.12+7.orig.tar.xz
head openjdk-11-jre-dcevm-11.0.12/src/java.base/share/native/libfdlibm/e_rem_pio2.c:175:27: portability: Shifting a negative value is technically undefined behaviour [shiftNegativeLHS]