With the actual snapshot (gcc-4.2-20060325) I get the ICE: tree check: expected ssa_name, have struct_field_tag in is_old_name, at tree-into-ssa.c:466
Michael Cieslinski g++42f -O1 -msse2 -mfpmath=sse -ftree-vectorize -c in.ii -S -v Using built-in specs. Target: x86_64-unknown-linux-gnu Configured with: ../gcc-4.2-20060325/configure --prefix=/usr/local/gcc42f --program-suffix=42f --with-arch=opteron --enable-languages=c,c++ --enable-__cxa_atexit --disable-nls --enable-threads=posix --disable-multilib --enable-checking Thread model: posix gcc version 4.2.0 20060325 (experimental) /usr/local/gcc42f/libexec/gcc/x86_64-unknown-linux-gnu/4.2.0/cc1plus -fpreprocessed in.ii -quiet -dumpbase in.ii -msse2 -mfpmath=sse -march=opteron -auxbase in -O1 -version -ftree-vectorize -o in.s GNU C++ version 4.2.0 20060325 (experimental) (x86_64-unknown-linux-gnu) compiled by GNU C version 4.2.0 20060325 (experimental). GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096 Compiler executable checksum: b091679bfe10b065fa639aec2f0c7166 in.ii: In function 'EVT MatchDeadPix(int, MatchDeadPixParType, long int)': in.ii:49: internal compiler error: tree check: expected ssa_name, have struct_field_tag in is_old_name, at tree-into-ssa.c:466 Please submit a full bug report, with preprocessed source if appropriate. -- Summary: ICE: tree check: expected ssa_name, have struct_field_tag in is_old_name, at tree-into-ssa.c:466 Product: gcc Version: 4.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: micis at gmx dot de GCC build triplet: x86_64-unknown-linux-gnu GCC host triplet: x86_64-unknown-linux-gnu GCC target triplet: x86_64-unknown-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26948