From 4297a3f0029974c62628d69b6f3f9ef25f01ea7d Mon Sep 17 00:00:00 2001 From: Artemiy Volkov Date: Mon, 20 Mar 2017 13:47:50 -0700 Subject: [PATCH] Support DW_TAG_rvalue_reference type Make gdb DWARF reader understand the DW_TAG_rvalue_reference type tag. Handling of this tag is done in the existing read_tag_reference_type() function, to which we add a new parameter representing the kind of reference type (lvalue vs rvalue). gdb/ChangeLog PR gdb/14441 * dwarf2read.c (process_die, read_type_die_1): Handle the DW_TAG_rvalue_reference_type DIE. (read_tag_reference_type): Add new parameter "refcode". --- gdb/ChangeLog | 7 +++++++ gdb/dwarf2read.c | 15 +++++++++++---- 2 files changed, 18 insertions(+), 4 deletions(-) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 7d7494c..30cb60b 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,6 +1,13 @@ 2017-03-20 Artemiy Volkov PR gdb/14441 + * dwarf2read.c (process_die, read_type_die_1): Handle the + DW_TAG_rvalue_reference_type DIE. + (read_tag_reference_type): Add new parameter "refcode". + +2017-03-20 Artemiy Volkov + + PR gdb/14441 * c-typeprint.c (c_print_type, c_type_print_varspec_prefix) (c_type_print_modifier, c_type_print_varspec_suffix) (c_type_print_base): Support printing rvalue reference types. diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c index 3fb843a..b3ea52b 100644 --- a/gdb/dwarf2read.c +++ b/gdb/dwarf2read.c @@ -8388,6 +8388,7 @@ process_die (struct die_info *die, struct dwarf2_cu *cu) case DW_TAG_pointer_type: case DW_TAG_ptr_to_member_type: case DW_TAG_reference_type: + case DW_TAG_rvalue_reference_type: case DW_TAG_string_type: break; @@ -14567,16 +14568,19 @@ read_tag_ptr_to_member_type (struct die_info *die, struct dwarf2_cu *cu) return set_die_type (die, type, cu); } -/* Extract all information from a DW_TAG_reference_type DIE and add to +/* Extract all information from a DW_TAG_{rvalue_,}reference_type DIE and add to the user defined type vector. */ static struct type * -read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) +read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu, + enum type_code refcode) { struct comp_unit_head *cu_header = &cu->header; struct type *type, *target_type; struct attribute *attr; + gdb_assert (refcode == TYPE_CODE_REF || refcode == TYPE_CODE_RVALUE_REF); + target_type = die_type (die, cu); /* The die_type call above may have already set the type for this DIE. */ @@ -14584,7 +14588,7 @@ read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu) if (type) return type; - type = lookup_lvalue_reference_type (target_type); + type = lookup_reference_type (target_type, refcode); attr = dwarf2_attr (die, DW_AT_byte_size, cu); if (attr) { @@ -19620,7 +19624,10 @@ read_type_die_1 (struct die_info *die, struct dwarf2_cu *cu) this_type = read_tag_ptr_to_member_type (die, cu); break; case DW_TAG_reference_type: - this_type = read_tag_reference_type (die, cu); + this_type = read_tag_reference_type (die, cu, TYPE_CODE_REF); + break; + case DW_TAG_rvalue_reference_type: + this_type = read_tag_reference_type (die, cu, TYPE_CODE_RVALUE_REF); break; case DW_TAG_const_type: this_type = read_tag_const_type (die, cu); -- 2.7.4