On 30 March 2015 at 20:45, David Kredba wrote: > Hello. > Could you plese help me? > What information I have to provide as good enough for gcc-5 possible > bug report if Gentoo tcsh-6.18.01-r2 is maybe miscompiled with "-g O2 > -march=core2 -mtune=core2"? > > This way (LTO or non-LTO) built tcsh always utilizes 100% CPU: [...] > Is it binary dumps diff? No, find which function misbehaves (use GDB to look at a stack trace while it is using 100% CPU). Find which source file contains that function. Compile that file as normal (non-LTO) adding -save-temps to the gcc command. Create a bug at https://gcc/gnu.org/bugzilla/ and attach the .i file created by the gcc -save-temps command. Also follow all the other instructions at https://gcc.gnu.org/bugs/
