http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56703
--- Comment #1 from Jay <jay.krell at cornell dot edu> 2013-03-23 23:12:03 UTC --- I see that the check for any function involves a cast of its type -- i.e. it isn't customized per-function, so a change isn't trivial. For now I have removed strstr and strsignal from system.h -- assume they are declared.