gdb/testsuite/gdb.dwarf2/missing-type-name-for-templates.exp

# Copyright 2022-2024 Free Software Foundation, Inc.

# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# This tests GDB's handling of DW_TAG_template_type_parameter and
# DW_TAG_template_value_parameter tags that do not have a DW_AT_name attribute.
# The attribute is optional for the tags and a bug about GDB not recording
# the respective symbols (because of the missing name) was reported in PR
# gdb/28396.

load_lib dwarf.exp

require dwarf2_support

standard_testfile .cc .S

set asm_file [standard_output_file $srcfile2]
Dwarf::assemble $asm_file {
    cu {} {
	DW_TAG_compile_unit {
	    {DW_AT_language @DW_LANG_C_plus_plus}
	} {
	    declare_labels int float template_var1 template_var2 template_var3

	    int: DW_TAG_base_type {
		{DW_AT_name "int"}
		{DW_AT_byte_size 4 DW_FORM_data1}
		{DW_AT_encoding @DW_ATE_signed}
	    }

	    float: base_type {
		{DW_AT_name float}
		{DW_AT_byte_size 4 DW_FORM_sdata}
		{DW_AT_encoding @DW_ATE_float}
	    }

	    DW_TAG_subprogram {
		{DW_AT_name "main"}
		{MACRO_AT_range "main"}
		{DW_AT_type :$int}
		{DW_AT_external 1 DW_FORM_flag}
	    } {
		DW_TAG_variable {
		    {DW_AT_name "var1"}
		    {DW_AT_type :$template_var1}
		}
		DW_TAG_variable {
		    {DW_AT_name "var2"}
		    {DW_AT_type :$template_var2}
		}
		DW_TAG_variable {
		    {DW_AT_name "var3"}
		    {DW_AT_type :$template_var3}
		}
	    }

	    # A variable whose type is a template instantiation with two
	    # template parameters, one unnamed.
	    template_var1: DW_TAG_structure_type {
		{DW_AT_name "template_var1<int, float>"}
	    } {
		DW_TAG_member {
		    {DW_AT_name "me"}
		    {DW_AT_type :$int}
		}
		DW_TAG_member {
		    {DW_AT_name "me2"}
		    {DW_AT_type :$float}
		}
		DW_TAG_template_type_param {
		    {DW_AT_type :$int}
		}
		DW_TAG_template_type_param {
		    {DW_AT_name "second"}
		    {DW_AT_type :$float}
		}
	    }

	    # A variable whose type is a template instantiation with two
	    # template parameters, both unnamed.
	    template_var2: DW_TAG_class_type {
		{DW_AT_name "template_var2<int, float>"}
	    } {
		DW_TAG_member {
		    {DW_AT_name "me"}
		    {DW_AT_type :$int}
		}
		DW_TAG_member {
		    {DW_AT_name "me2"}
		    {DW_AT_type :$float}
		}
		DW_TAG_template_type_param {
		    {DW_AT_type :$int}
		}
		DW_TAG_template_type_param {
		    {DW_AT_type :$float}
		}
	    }

	    # A variable whose type is a template instantiation with four
	    # template arguments, two types, two values, all unnamed.
	    template_var3: DW_TAG_structure_type {
		{DW_AT_name "template_var3<0, int, 11, float>"}
	    } {
		DW_TAG_member {
		    {DW_AT_name "me"}
		    {DW_AT_type :$int}
		}
		DW_TAG_member {
		    {DW_AT_name "me2"}
		    {DW_AT_type :$float}
		}
		DW_TAG_template_value_param {
		    {DW_AT_type :$int}
		    {DW_AT_const_value 0 DW_FORM_sdata}
		}
		DW_TAG_template_type_param {
		    {DW_AT_type :$int}
		}
		DW_TAG_template_value_param {
		    {DW_AT_type :$int}
		    {DW_AT_const_value 11 DW_FORM_sdata}
		}
		DW_TAG_template_type_param {
		    {DW_AT_type :$float}
		}
	    }
	}
    }
}

if { [prepare_for_testing "failed to prepare" ${testfile} \
	[list $srcfile $asm_file] {nodebug c++}] } {
    return -1
}

if ![runto_main] {
    return -1
}

gdb_test "ptype var1" [multi_line \
    "type = struct template_var1<int, float> \\\[with <unnamed0> = int, second = float\\\] {" \
    "    <unnamed0> me;" \
    "    second me2;" \
    "}"]

gdb_test "ptype var2" [multi_line \
    "type = class template_var2<int, float> \\\[with <unnamed0> = int, <unnamed1> = float\\\] {" \
    "    <unnamed0> me;" \
    "    <unnamed1> me2;" \
    "}"]

gdb_test "ptype var3" [multi_line \
    "type = struct template_var3<0, int, 11, float> \\\[with <unnamed1> = int, <unnamed3> = float\\\] {" \
    "    <unnamed1> me;" \
    "    <unnamed3> me2;" \
    "}"]