| Message ID | bd389ec8-34c4-6a1a-f9d7-90fa7e270104@netcologne.de |
|---|---|
| State | New |
| Headers | show |
On 06/09/2017 01:47 PM, Thomas Koenig wrote: > Hello world, > > the attached patch fixes the PR by not doing a replacement of > (a(i,i),i=1,3) by an array expression (which does not exist). > > Regression-tested. OK for trunk? > OK, thanks > Regards > > Thomas > > 2017-06-09 Thomas Koenig <tkoenig@gcc.gnu.org> > > PR fortran/80988 > * frontend-passes.c (traverse_io_block): Also > check for variables occurring as indices multiple > time in a single implied DO loop. > > 2017-06-09 Thomas Koenig <tkoenig@gcc.gnu.org> > > PR fortran/80988 > * gfortran.dg/implied_do_io_3.f90: New test.
Index: frontend-passes.c =================================================================== --- frontend-passes.c (Revision 249039) +++ frontend-passes.c (Arbeitskopie) @@ -1164,7 +1164,14 @@ traverse_io_block (gfc_code *code, bool *has_reach /* Check for (a(k), i=1,4) or ((a(j, i), i=1,4), j=1,4). */ if (!stack_top || !stack_top->iter || stack_top->iter->var->symtree != start->symtree) - iters[i] = NULL; + { + /* Check for (a(i,i), i=1,3). */ + for (j=0; j<i; j++) + if (iters[j] && iters[j]->var->symtree == start->symtree) + return false; + + iters[i] = NULL; + } else { iters[i] = stack_top->iter;
Hello world, the attached patch fixes the PR by not doing a replacement of (a(i,i),i=1,3) by an array expression (which does not exist). Regression-tested. OK for trunk? Regards Thomas 2017-06-09 Thomas Koenig <tkoenig@gcc.gnu.org> PR fortran/80988 * frontend-passes.c (traverse_io_block): Also check for variables occurring as indices multiple time in a single implied DO loop. 2017-06-09 Thomas Koenig <tkoenig@gcc.gnu.org> PR fortran/80988 * gfortran.dg/implied_do_io_3.f90: New test.