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Diffstat (limited to 'gcc/fortran/trans-expr.c')
| -rw-r--r-- | gcc/fortran/trans-expr.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/gcc/fortran/trans-expr.c b/gcc/fortran/trans-expr.c index b7d7ed9..3cf8df5 100644 --- a/gcc/fortran/trans-expr.c +++ b/gcc/fortran/trans-expr.c @@ -504,6 +504,26 @@ gfc_conv_component_ref (gfc_se * se, gfc_ref * ref) field = c->backend_decl; gcc_assert (TREE_CODE (field) == FIELD_DECL); decl = se->expr; + + /* Components can correspond to fields of different containing + types, as components are created without context, whereas + a concrete use of a component has the type of decl as context. + So, if the type doesn't match, we search the corresponding + FIELD_DECL in the parent type. To not waste too much time + we cache this result in norestrict_decl. */ + + if (DECL_FIELD_CONTEXT (field) != TREE_TYPE (decl)) + { + tree f2 = c->norestrict_decl; + if (!f2 || DECL_FIELD_CONTEXT (f2) != TREE_TYPE (decl)) + for (f2 = TYPE_FIELDS (TREE_TYPE (decl)); f2; f2 = DECL_CHAIN (f2)) + if (TREE_CODE (f2) == FIELD_DECL + && DECL_NAME (f2) == DECL_NAME (field)) + break; + gcc_assert (f2); + c->norestrict_decl = f2; + field = f2; + } tmp = fold_build3_loc (input_location, COMPONENT_REF, TREE_TYPE (field), decl, field, NULL_TREE); |