I just tried to compile the Linux kernel 2.6.30.1 with the gcc compiler version 4.5 snapshot 20090709. The compiler said
drivers/net/ixgbe/ixgbe_main.c:5081:1: error: definition in block 50 does not dominate use in block 51 for SSA_NAME: .MEM_541 in statement: .MEM_482 = PHI <.MEM_480(40), .MEM_541(51)> PHI argument .MEM_541 for PHI node .MEM_482 = PHI <.MEM_480(40), .MEM_541(51)> drivers/net/ixgbe/ixgbe_main.c:5081:1: internal compiler error: verify_ssa failed Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. Preprocessed gzipped source attached. Flag -O2 required. -- Summary: verify_ssa failed with -O2 Product: gcc Version: 4.5.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: dcb314 at hotmail dot com GCC host triplet: x86_64-suse-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40711
