> we noticed that xterm in Gentoo started to produce broken color display when > compiled with gcc-4.1 and -Os ... one of our devs ripped apart a small test > case to illustrate the issue at hand (Debian shows the same issues) > > the trouble centers around a matrix declared as static volatile and is never > initialized ... xterm expects the matrix to be zero set already, but when > compiled with -Os, this just doesnt work Ouch. The compiler produces wrong code. The problem is not the matrix, though, but a bad interaction of the for-loop and the if-statement. Filed in Bugzilla as http://gcc.gnu.org/PR28386. Regards, Volker
