shiftTooManyBitsSigned
ftp://ftp.de.debian.org/debian/pool/main/g/golly/golly_3.3.orig.tar.gz
head golly-3.3-src/gollybase/bigint.cpp:287:40: portability: Shifting signed 32-bit value by 31 bits is implementation-defined behaviour [shiftTooManyBitsSigned]
ftp://ftp.de.debian.org/debian/pool/main/g/groestlcoin/groestlcoin_2.21.1~dfsg.orig.tar.xz
head groestlcoin-2.21.1/src/test/versionbits_tests.cpp:315:5: portability: Shifting signed 32-bit value by 31 bits is implementation-defined behaviour. See condition at line 314. [shiftTooManyBitsSigned]