diff options
Diffstat (limited to 'gcc/fortran/trans-expr.c')
| -rw-r--r-- | gcc/fortran/trans-expr.c | 22 |
1 files changed, 14 insertions, 8 deletions
diff --git a/gcc/fortran/trans-expr.c b/gcc/fortran/trans-expr.c index 030edc1..33fc061 100644 --- a/gcc/fortran/trans-expr.c +++ b/gcc/fortran/trans-expr.c @@ -1712,12 +1712,12 @@ gfc_make_safe_expr (gfc_se * se) Also used for arguments to procedures with multiple entry points. */ tree -gfc_conv_expr_present (gfc_symbol * sym) +gfc_conv_expr_present (gfc_symbol * sym, bool use_saved_desc) { - tree decl, cond; + tree decl, orig_decl, cond; gcc_assert (sym->attr.dummy); - decl = gfc_get_symbol_decl (sym); + orig_decl = decl = gfc_get_symbol_decl (sym); /* Intrinsic scalars with VALUE attribute which are passed by value use a hidden argument to denote the present status. */ @@ -1744,10 +1744,13 @@ gfc_conv_expr_present (gfc_symbol * sym) return cond; } - if (TREE_CODE (decl) != PARM_DECL) + /* Assumed-shape arrays use a local variable for the array data; + the actual PARAM_DECL is in a saved decl. As the local variable + is NULL, it can be checked instead, unless use_saved_desc is + requested. */ + + if (use_saved_desc && TREE_CODE (decl) != PARM_DECL) { - /* Array parameters use a temporary descriptor, we want the real - parameter. */ gcc_assert (GFC_DESCRIPTOR_TYPE_P (TREE_TYPE (decl)) || GFC_ARRAY_TYPE_P (TREE_TYPE (decl))); decl = GFC_DECL_SAVED_DESCRIPTOR (decl); @@ -1761,9 +1764,12 @@ gfc_conv_expr_present (gfc_symbol * sym) we thus also need to check the array descriptor. For BT_CLASS, it can also occur for scalars and F2003 due to type->class wrapping and class->class wrapping. Note further that BT_CLASS always uses an - array descriptor for arrays, also for explicit-shape/assumed-size. */ + array descriptor for arrays, also for explicit-shape/assumed-size. + For assumed-rank arrays, no local variable is generated, hence, + the following also applies with !use_saved_desc. */ - if (!sym->attr.allocatable + if ((use_saved_desc || TREE_CODE (orig_decl) == PARM_DECL) + && !sym->attr.allocatable && ((sym->ts.type != BT_CLASS && !sym->attr.pointer) || (sym->ts.type == BT_CLASS && !CLASS_DATA (sym)->attr.allocatable |