[Bug fortran/29870] New: Arithmetic IF, existing label and "label not defined"

["burnus at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

SUBROUTINE ACFI(X,ARG,VAL,Y,NDIM,EPS,IER)                         ACFI 730
      IF(Q3)11,12,11                                                   
ACFI1320
   11 Y=P3/Q3                                                          
ACFI1330
   12 Y=1.E75                                                          
ACFI1350
      END                                                              
ACFI1580

This is part of http://www.ecalculations.com/SSP.EXE (this is a ZIP file).
Error message of gfortran ACFI.FOR:

ACFI.FOR:2.72:
      IF(Q3)11,12,11
                                                                       1
Warning: Obsolete: arithmetic IF statement at (1)
ACFI.FOR:4.13:
   12 Y=1.E75
            1
Error: Real constant overflows its kind at (1)
ACFI.FOR:2.72:
      IF(Q3)11,12,11
                                                                       1
Error: Label 12 referenced at (1) is never defined


-- 
           Summary: Arithmetic IF, existing label and "label not defined"
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: rejects-valid
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: burnus at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29870