http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60830
--- Comment #26 from Denis Excoffier <g...@denis-excoffier.org> --- After more investigation, it seems that the culprit can be --disable-sjlj-exceptions. Since the beginning (last Sunday), each time i use it on the command line, the build fails and each time i don't use it, the build succeeds. Please would you mind trying again a cygwin build, but with --disable-sjlj-exceptions this time. Especially for those where the build succeeded. For Mikael (see comment #2), it is more than probable that he used --disable-sjlj-exceptions instead of my gmp kludges known by nobody except by me.