I just tried to compile the lapack package version 3.3.1 with the GNU Fortran compiler version 4.4 snapshot 20080509
The compiler said sspr.f: In function 'sspr': sspr.f:1: internal compiler error: tree check: expected integer_cst, have plus_expr in int_cst_value, at tree.c:8002 Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. Source code attached. Flag -O3 required, but this code compiles at -O2, so I don't think the problem is in the Fortran front end, more likely the back-end. -- Summary: ice for legal code with -O3 Product: gcc Version: 4.4.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: dcb314 at hotmail dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36206
