Since revision 139200 (rev. 139186 works) gcc.dg/matrix/transpose-3.c fails on Darwin (see http://gcc.gnu.org/ml/gcc-testresults/2008-08/msg01775.html), minimal flags -fipa-matrix-reorg -O1 -fwhole-program:
[ibook-dhum] f90/bug% gfc -fipa-matrix-reorg -O1 -fwhole-program /opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/matrix/transpose-3.c /opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/matrix/transpose-3.c: In function 'main': /opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/matrix/transpose-3.c:16: error: SSA name in freelist but still referenced T.34_62 /opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/matrix/transpose-3.c:16: note: in statement D.3846_29 = vel.6_28 + T.34_62; /opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/matrix/transpose-3.c:16: internal compiler error: verify_stmts failed -fipa-matrix-reorg -fwhole-program gives: [ibook-dhum] f90/bug% gfc -fipa-matrix-reorg -fwhole-program /opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/matrix/transpose-3.c /opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/matrix/transpose-3.c: In function 'main': /opt/gcc/_gcc_clean/gcc/testsuite/gcc.dg/matrix/transpose-3.c:16: internal compiler error: Bus error -- Summary: [4.4 Regression]: gcc.dg/matrix/transpose-3.c:16: internal compiler error: verify_stmts failed Product: gcc Version: 4.4.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: dominiq at lps dot ens dot fr GCC build triplet: *-apple-darwin* GCC host triplet: *-apple-darwin* GCC target triplet: *-apple-darwin* http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37185