http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50981
--- Comment #26 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2012-01-21 11:41:15 UTC --- Running the regression test suite gives: FAIL: gfortran.dg/coarray_poly_1.f90 -O (internal compiler error) FAIL: gfortran.dg/coarray_poly_1.f90 -O (test for errors, line 11) FAIL: gfortran.dg/coarray_poly_1.f90 -O (test for excess errors) FAIL: gfortran.dg/extends_type_of_1.f03 -O0 execution test FAIL: gfortran.dg/extends_type_of_1.f03 -O1 execution test FAIL: gfortran.dg/extends_type_of_1.f03 -O2 execution test FAIL: gfortran.dg/extends_type_of_1.f03 -O3 -fomit-frame-pointer execution test FAIL: gfortran.dg/extends_type_of_1.f03 -O3 -fomit-frame-pointer -funroll-loops execution test FAIL: gfortran.dg/extends_type_of_1.f03 -O3 -fomit-frame-pointer -funroll-all-loops -finline-functions execution test FAIL: gfortran.dg/extends_type_of_1.f03 -O3 -g execution test FAIL: gfortran.dg/extends_type_of_1.f03 -Os execution test The failure for gfortran.dg/coarray_poly_1.f90 is [macbook] f90/bug% gfc /opt/gcc/work/gcc/testsuite/gfortran.dg/coarray_poly_1.f90 -fcoarray=single -O/opt/gcc/work/gcc/testsuite/gfortran.dg/coarray_poly_1.f90:9.25: class(t) :: A(:)[4,2:*] ! { dg-error "is not ALLOCATABLE, SAVE nor a dummy ar 1 Error: Variable 'a' at (1) is a coarray and is not ALLOCATABLE, SAVE nor a dummy argument f951: internal compiler error: Segmentation fault Note that gfortran.dg/extends_type_of_3.f90 does not appear because it is not run (dg-do compile). However it runs without the patch and gives a segmentation fault with it.