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authorKeith Seitz <keiths@redhat.com>2017-12-07 15:01:30 -0800
committerKeith Seitz <keiths@redhat.com>2017-12-07 15:01:30 -0800
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Record nested types
GDB currently does not track types defined in classes. Consider: class A { public: class B { public: class C { }; }; }; (gdb) ptype A type = class A { <no data fields> } This patch changes this behavior so that GDB records these nested types and displays them to the user when he has set the (new) "print type" option "nested-type-limit." Example: (gdb) set print type nested-type-limit 1 (gdb) ptype A type = class A { <no data fields> class A::B { <no data fields> }; } (gdb) set print type nested-type-limit 2 type = class A { <no data fields> class A::B { <no data fields> class A::B::C { <no data fields> }; }; } By default, the code maintains the status quo, that is, it will not print any nested type definitions at all. Testing is carried out via cp_ptype_class which required quite a bit of modification to permit recursive calling (for the nested types). This was most easily facilitated by turning the ptype command output into a queue. Upshot: the test suite now has stack and queue data structures that may be used by test writers. gdb/ChangeLog * NEWS (New commands): Mention set/show print type nested-type-limit. * c-typeprint.c (c_type_print_base): Print out nested types. * dwarf2read.c (struct typedef_field_list): Rename to ... (struct decl_field_list): ... this. Change all uses. (struct field_info) <nested_types_list, nested_types_list_count>: New fields. (add_partial_symbol): Look for nested type definitions in C++, too. (dwarf2_add_typedef): Rename to ... (dwarf2_add_type_defn): ... this. (type_can_define_types): New function. Update assertion to use type_can_define_types. Permit NULL for a field's name. (process_structure_scope): Handle child DIEs of types that can define types. Copy the list of nested types into the type struct. * gdbtypes.h (struct typedef_field): Rename to ... (struct decl_field): ... this. Change all uses. [is_protected, is_private]: New fields. (struct cplus_struct_type) <nested_types, nested_types_count>: New fields. (TYPE_NESTED_TYPES_ARRAY, TYPE_NESTED_TYPES_FIELD) (TYPE_NESTED_TYPES_FIELD_NAME, TYPE_NESTED_TYPES_FIELD_TYPE) (TYPE_NESTED_TYPES_COUNT, TYPE_NESTED_TYPES_FIELD_PROTECTED) (TYPE_NESTED_TYPES_FIELD_PRIVATE): New macros. * typeprint.c (type_print_raw_options, default_ptype_flags): Add default value for print_nested_type_limit. (print_nested_type_limit): New static variable. (set_print_type_nested_types, show_print_type_nested_types): New functions. (_initialize_typeprint): Register new commands for set/show `print-nested-type-limit'. * typeprint.h (struct type_print_options) [print_nested_type_limit]: New field. gdb/testsuite/ChangeLog * gdb.cp/nested-types.cc: New file. * gdb.cp/nested-types.exp: New file. * lib/cp-support.exp: Load data-structures.exp library. (debug_cp_test_ptype_class): New global. (cp_ptype_class_verbose, next_line): New procedures. (cp_test_ptype_class): Add and document new parameter `recursive_qid'. Add and document new return value. Switch the list of lines to a queue. Add support for new `type' key for nested type definitions. Add debugging/troubleshooting messages. * lib/data-structures.exp: New file. gdb/doc/ChangeLog * gdb.texinfo (Symbols): Document "set print type nested-type-limit" and "show print type nested-type-limit".
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diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 3b251c6..1e4ef98 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -17071,6 +17071,19 @@ cause @value{GDBN} to omit the methods.
This command shows the current setting of method display when printing
classes.
+@kindex set print type nested-type-limit
+@item set print type nested-type-limit @var{limit}
+@itemx set print type nested-type-limit unlimited
+Set the limit of displayed nested types that the type printer will
+show. A @var{limit} of @code{unlimited} or @code{-1} will show all
+nested definitions. By default, the type printer will not show any nested
+types defined in classes.
+
+@kindex show print type nested-type-limit
+@item show print type nested-type-limit
+This command shows the current display limit of nested types when
+printing classes.
+
@kindex set print type typedefs
@item set print type typedefs
@itemx set print type typedefs on