Since May 1st this testcase fails for all optimization levels above -O0. According to gcc-testresults it passed on April 30th.
-- Summary: [4.3 regression] gfortran.dg/st_function.f90 FAILs Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: tobi at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31991