https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99840
--- Comment #6 from Steve Kargl <sgk at troutmask dot apl.washington.edu> --- On Wed, Mar 31, 2021 at 08:51:57PM +0000, anlauf at gcc dot gnu.org wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99840 > > --- Comment #5 from anlauf at gcc dot gnu.org --- > OK, now I see it. gfc_get_shape does not init the resulting shape. > The following simpler patch does the job: > > diff --git a/gcc/fortran/simplify.c b/gcc/fortran/simplify.c > index 388aca7c38c..c27b47aa98f 100644 > --- a/gcc/fortran/simplify.c > +++ b/gcc/fortran/simplify.c > @@ -8123,8 +8123,8 @@ gfc_simplify_transpose (gfc_expr *matrix) > &matrix->where); > result->rank = 2; > result->shape = gfc_get_shape (result->rank); > - mpz_set (result->shape[0], matrix->shape[1]); > - mpz_set (result->shape[1], matrix->shape[0]); > + mpz_init_set (result->shape[0], matrix->shape[1]); > + mpz_init_set (result->shape[1], matrix->shape[0]); > > if (matrix->ts.type == BT_CHARACTER) > result->ts.u.cl = matrix->ts.u.cl; > The simple patch in comment #2 also works.
