I compiled mpfr yesterday since a new 2.3.1 version had released. gas crashed with a message which said it had met wrong asm code, I omited my CFLAGS, then passed compiling.
I tried the flags again and again, finally I found the reason is that -verbose-asm flag cant work together with -ggdb3 flag. -- Summary: gcc 's -verbose-asm and -ggdb3 can't work together Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: linuxl4 at sohu dot com GCC build triplet: i686-linux-gnu GCC host triplet: i686-linux-gnu GCC target triplet: i686-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35070