One more post. I set CFLAGS=01 on the configure command line and the error went away. I guess the optimiser with my version of gcc was a trifle too aggressive. -- View this message in context: http://www.nabble.com/Reported-error-with-%22make-check%22-tp15979219p16002279.html Sent from the Gnu - GMP - Bugs mailing list archive at Nabble.com.