--- /dev/null
+# Copyright 2018 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 some non-standard DWARF that we still expect GDB to be
+# able to handle.
+#
+# The DWARF standard (v5 5.1) says this:
+#
+# A base type is represented by a debugging information entry with
+# the tag DW_TAG_base_type.
+#
+# A base type entry may have a DW_AT_name attribute whose value is
+# a null-terminated string containing the name of the base type as
+# recognized by the programming language of the compilation unit
+# containing the base type entry.
+#
+# So the DW_AT_name field for a DW_TAG_base_type is optional. This
+# test provides some basic checking that GDB doesn't crash when
+# presented with this situation.
+
+load_lib dwarf.exp
+
+# This test can only be run on targets which support DWARF-2 and use gas.
+if {![dwarf2_support]} {
+ return 0
+}
+
+standard_testfile void-type.c void-type.S
+
+# Make some DWARF for the test.
+set asm_file [standard_output_file $srcfile2]
+Dwarf::assemble $asm_file {
+ global srcdir subdir srcfile
+
+ set func_result [function_range func ${srcdir}/${subdir}/${srcfile}]
+ set func_start [lindex $func_result 0]
+ set func_length [lindex $func_result 1]
+
+ set main_result [function_range main ${srcdir}/${subdir}/${srcfile}]
+ set main_start [lindex $main_result 0]
+ set main_length [lindex $main_result 1]
+
+ cu {} {
+ DW_TAG_compile_unit {
+ {DW_AT_producer "GNU C 8.1"}
+ {DW_AT_language @DW_LANG_C}
+ {DW_AT_name void-type.c}
+ {DW_AT_comp_dir /tmp}
+ } {
+ declare_labels main_type int_type ptr_type
+
+ main_type: DW_TAG_base_type {
+ {DW_AT_byte_size 4 DW_FORM_sdata}
+ {DW_AT_encoding @DW_ATE_signed}
+ }
+
+ int_type: DW_TAG_base_type {
+ {DW_AT_byte_size 0 DW_FORM_sdata}
+ {DW_AT_encoding @DW_ATE_signed}
+ }
+
+ ptr_type: DW_TAG_pointer_type {
+ {DW_AT_type :$int_type}
+ }
+
+ DW_TAG_subprogram {
+ {name func}
+ {low_pc $func_start addr}
+ {high_pc "$func_start + $func_length" addr}
+ {type :$int_type}
+ }
+ DW_TAG_subprogram {
+ {name main}
+ {low_pc $main_start addr}
+ {high_pc "$main_start + $main_length" addr}
+ {type :$main_type}
+ }
+
+ DW_TAG_variable {
+ {DW_AT_name "var_a"}
+ {DW_AT_type :$main_type}
+ {DW_AT_external 1 DW_FORM_flag}
+ {DW_AT_location {DW_OP_addr [gdb_target_symbol "var_a"]} SPECIAL_expr}
+ }
+
+ DW_TAG_variable {
+ {DW_AT_name "var_ptr"}
+ {DW_AT_type :$ptr_type}
+ {DW_AT_external 1 DW_FORM_flag}
+ {DW_AT_location {DW_OP_addr [gdb_target_symbol "var_ptr"]} SPECIAL_expr}
+ }
+ }
+ }
+}
+
+if { [prepare_for_testing "failed to prepare" ${testfile} \
+ [list $srcfile $asm_file] {nodebug}] } {
+ return -1
+}
+
+if ![runto_main] {
+ return -1
+}
+
+# Use 'ptype' on two variables that are using DW_TAG_base_type types
+# with missing DW_AT_name attributes.
+gdb_test "ptype var_ptr" "type = <invalid type code $decimal> \\*" \
+ "ptype of a pointer to a basic type with missing name"
+
+gdb_test "ptype var_a" "type = <invalid type code $decimal>" \
+ "ptype of a variable that is a basic type with a missing name"
{DW_AT_name void-type.c}
{DW_AT_comp_dir /tmp}
} {
- declare_labels main_type int_type ptr_type
+ declare_labels int_type void_type ptr_type
- main_type: DW_TAG_base_type {
+ int_type: DW_TAG_base_type {
{DW_AT_byte_size 4 DW_FORM_sdata}
{DW_AT_encoding @DW_ATE_signed}
{DW_AT_name int}
}
- int_type: DW_TAG_base_type {
+ void_type: DW_TAG_base_type {
{DW_AT_byte_size 0 DW_FORM_sdata}
{DW_AT_encoding @DW_ATE_signed}
{DW_AT_name void}
}
ptr_type: DW_TAG_pointer_type {
- {DW_AT_type :$int_type}
+ {DW_AT_type :$void_type}
}
DW_TAG_subprogram {
{name func}
{low_pc $func_start addr}
{high_pc "$func_start + $func_length" addr}
- {type :$int_type}
+ {type :$void_type}
}
DW_TAG_subprogram {
{name main}
{low_pc $main_start addr}
{high_pc "$main_start + $main_length" addr}
- {type :$main_type}
+ {type :$int_type}
}
DW_TAG_variable {
projects / deliverable / binutils-gdb.git / commitdiff
