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| author | Thomas Koenig <tkoenig@gcc.gnu.org> | 2017-06-10 10:07:13 +0000 |
|---|---|---|
| committer | Thomas Koenig <tkoenig@gcc.gnu.org> | 2017-06-10 10:07:13 +0000 |
| commit | ac39f0e831cee81e63b0d3a84d2ae6943b27ee5b (patch) | |
| tree | a22801c65ba5677ad8e9e97936b0736f5610e9dc /gcc/fortran/frontend-passes.c | |
| parent | 18787c384aba66221a157862c81238b9fea4e13d (diff) | |
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re PR fortran/80988 (171_swim fails)
2017-06-10 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.
2017-06-10 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/80988
* gfortran.dg/implied_do_io_3.f90: New test.
From-SVN: r249092
Diffstat (limited to 'gcc/fortran/frontend-passes.c')
| -rw-r--r-- | gcc/fortran/frontend-passes.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/gcc/fortran/frontend-passes.c b/gcc/fortran/frontend-passes.c index 8fa1de1..11c7503 100644 --- a/gcc/fortran/frontend-passes.c +++ b/gcc/fortran/frontend-passes.c @@ -1164,7 +1164,16 @@ traverse_io_block (gfc_code *code, bool *has_reached, gfc_code *prev) /* 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). */ + int j; + + 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; |