diff options
Diffstat (limited to 'gcc/ada/gcc-interface')
| -rw-r--r-- | gcc/ada/gcc-interface/decl.c | 4 | ||||
| -rw-r--r-- | gcc/ada/gcc-interface/trans.c | 5 |
2 files changed, 7 insertions, 2 deletions
diff --git a/gcc/ada/gcc-interface/decl.c b/gcc/ada/gcc-interface/decl.c index c3774f2..89a6a2e 100644 --- a/gcc/ada/gcc-interface/decl.c +++ b/gcc/ada/gcc-interface/decl.c @@ -5587,6 +5587,10 @@ gnat_to_gnu_param (Entity_Id gnat_param, Mechanism_Type mech, DECL_BY_COMPONENT_PTR_P (gnu_param) = by_component_ptr; DECL_BY_DESCRIPTOR_P (gnu_param) = (mech == By_Descriptor || mech == By_Short_Descriptor); + /* Note that, in case of a parameter passed by double reference, the + DECL_POINTS_TO_READONLY_P flag is meant for the second reference. + The first reference always points to read-only, as it points to + the second reference, i.e. the reference to the actual parameter. */ DECL_POINTS_TO_READONLY_P (gnu_param) = (ro_param && (by_ref || by_component_ptr)); DECL_CAN_NEVER_BE_NULL_P (gnu_param) = Can_Never_Be_Null (gnat_param); diff --git a/gcc/ada/gcc-interface/trans.c b/gcc/ada/gcc-interface/trans.c index da1a8f1..3640782 100644 --- a/gcc/ada/gcc-interface/trans.c +++ b/gcc/ada/gcc-interface/trans.c @@ -1038,8 +1038,9 @@ Identifier_to_gnu (Node_Id gnat_node, tree *gnu_result_type_p) if (TREE_CODE (gnu_result) == INDIRECT_REF) TREE_THIS_NOTRAP (gnu_result) = 1; - if (read_only) - TREE_READONLY (gnu_result) = 1; + /* The first reference, in case of a double reference, always points + to read-only, see gnat_to_gnu_param for the rationale. */ + TREE_READONLY (gnu_result) = 1; } /* If it's a PARM_DECL to foreign convention subprogram, convert it. */ |