https://gcc.gnu.org/g:0dd82c0fba660775ff76ae27077a67f2f1358920
commit r13-8557-g0dd82c0fba660775ff76ae27077a67f2f1358920 Author: Harald Anlauf <anl...@gmx.de> Date: Wed May 17 20:39:18 2023 +0200 Fortran: set shape of initializers of zero-sized arrays [PR95374,PR104352] gcc/fortran/ChangeLog: PR fortran/95374 PR fortran/104352 * decl.cc (add_init_expr_to_sym): Set shape of initializer also for zero-sized arrays, so that bounds violations can be detected later. gcc/testsuite/ChangeLog: PR fortran/95374 PR fortran/104352 * gfortran.dg/zero_sized_13.f90: New test. (cherry picked from commit 7bafe652dba9167b65e7b5ef24e77eceb49709ba) Diff: --- gcc/fortran/decl.cc | 3 +-- gcc/testsuite/gfortran.dg/zero_sized_13.f90 | 28 ++++++++++++++++++++++++++++ 2 files changed, 29 insertions(+), 2 deletions(-) diff --git a/gcc/fortran/decl.cc b/gcc/fortran/decl.cc index 03e993eb0ff..527e84ad763 100644 --- a/gcc/fortran/decl.cc +++ b/gcc/fortran/decl.cc @@ -2248,8 +2248,7 @@ add_init_expr_to_sym (const char *name, gfc_expr **initp, locus *var_locus) && gfc_is_constant_expr (init) && (init->expr_type == EXPR_CONSTANT || init->expr_type == EXPR_STRUCTURE) - && spec_size (sym->as, &size) - && mpz_cmp_si (size, 0) > 0) + && spec_size (sym->as, &size)) { array = gfc_get_array_expr (init->ts.type, init->ts.kind, &init->where); diff --git a/gcc/testsuite/gfortran.dg/zero_sized_13.f90 b/gcc/testsuite/gfortran.dg/zero_sized_13.f90 new file mode 100644 index 00000000000..4035d458b32 --- /dev/null +++ b/gcc/testsuite/gfortran.dg/zero_sized_13.f90 @@ -0,0 +1,28 @@ +! { dg-do compile } +! { dg-options "-w" } +! +! PR fortran/95374 +! PR fortran/104352 - Various ICEs for bounds violation with zero-sized arrays +! +! Contributed by G. Steinmetz + +program p + implicit none + integer :: i + integer, parameter :: a(0) = 0 + integer, parameter :: b(0:-5) = 0 + integer, parameter :: c(*) = [(a(i:i), i=0,0)] ! { dg-error "out of bounds" } + integer, parameter :: d(*) = [(b(i:i), i=1,1)] ! { dg-error "out of bounds" } + integer, parameter :: e(1) = [(a(i) , i=1,1)] ! { dg-error "out of bounds" } + integer, parameter :: f(1) = [(a(i:i), i=1,1)] ! { dg-error "out of bounds" } + integer :: g(1) = [(a(i:i), i=0,0)] ! { dg-error "out of bounds" } + integer :: h(1) = [(a(i:i), i=1,1)] ! { dg-error "out of bounds" } + print *, [(a(i:i), i=0,0)] ! { dg-error "out of bounds" } + print *, [(a(i:i), i=1,1)] ! { dg-error "out of bounds" } + print *, any (a(1:1) == 1) ! { dg-error "out of bounds" } + print *, all (a(0:0) == 1) ! { dg-error "out of bounds" } + print *, sum (a(1:1)) ! { dg-error "out of bounds" } + print *, iall (a(0:0)) ! { dg-error "out of bounds" } + print *, minloc (a(0:0),1) ! { dg-error "out of bounds" } + print *, dot_product(a(1:1),a(1:1)) ! { dg-error "out of bounds" } +end