
This patch changes the DWARF reader to use the new symbol domains. It also adjusts many bits of associated code to adapt to this change. The non-DWARF readers are updated on a best-effort basis. This is somewhat simpler since most of them only support C and C++. I have no way to test a few of these. I went back and forth a few times on how to handle the "tag" situation. The basic problem is that C has a special namespace for tags, which is separate from the type namespace. Other languages don't do this. So, the question is, should a DW_TAG_structure_type end up in the tag domain, or the type domain, or should it be language-dependent? I settled on making it language-dependent using a thought experiment. Suppose there was a Rust compiler that only emitted nameless DW_TAG_structure_type objects, and specified all structure type names using DW_TAG_typedef. This DWARF would be correct, in that it faithfully represents the source language -- but would not work with a purely struct-domain implementation in gdb. Therefore gdb would be wrong. Now, this approach is a little tricky for C++, which uses tags but also enters a typedef for them. I notice that some other readers -- like stabsread -- actually emit a typedef symbol as well. And, I think this is a reasonable approach. It uses more memory, but it makes the internals simpler. However, DWARF never did this for whatever reason, and so in the interest of keeping the series slightly shorter, I've left some C++-specific hacks in place here. Note that this patch includes language_minimal as a language that uses tags. I did this to avoid regressing gdb.dwarf2/debug-names-tu.exp, which doesn't specify the language for a type unit. Arguably this test case is wrong. Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=30164
162 lines
5.3 KiB
Text
162 lines
5.3 KiB
Text
# Copyright 2018-2024 Free Software Foundation, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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load_lib "ada.exp"
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require allow_ada_tests
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# This test verifies that the commands
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# info [functions|variables|types]
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# respect the 'set language auto|ada|c' setting, whatever the language
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# of the current frame.
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# Similarly, checks that rbreak reports its results respecting
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# the language mode.
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standard_ada_testfile proc_in_ada
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set cfile "some_c"
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# gnat normalizes proc_in_ada source file when compiling.
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# As the 'info' commands results are sorted by absolute path names, also normalize
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# the some_c source file to ensure that the 'info' results are always
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# giving Ada results first.
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set csrcfile [file normalize ${srcdir}/${subdir}/${testdir}/${cfile}.c]
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set cobject [standard_output_file ${cfile}.o]
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if { [gdb_compile "${csrcfile}" "${cobject}" object [list debug]] != "" } {
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untested "failed to compile"
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return -1
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}
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if {[gdb_compile_ada "${srcfile}" "${binfile}" executable [list debug]] != "" } {
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untested "failed to compile"
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return -1
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}
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clean_restart ${testfile}
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set bp_location [gdb_get_line_number "STOP" ${testdir}/some_c.c]
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if {![runto "some_c.c:$bp_location"]} {
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return
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}
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set func_in_c(c_syntax) "${decimal}: void proc_in_c\\\(void\\\);"
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set func_in_c(ada_syntax) "${decimal}: procedure proc_in_c;"
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set func_in_ada(c_syntax) \
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[string cat \
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"${decimal}: void proc_in_ada\\\(void\\\);\r\n" \
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"${decimal}: void proc_in_ada.something_in_c\\\(void\\\);"]
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set func_in_ada(ada_syntax) \
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[string cat \
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"${decimal}: procedure proc_in_ada;\r\n" \
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"${decimal}: procedure proc_in_ada.something_in_c;"]
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set type_in_c(c_syntax) "${decimal}: typedef struct {\\.\\.\\.} some_type_in_c;"
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set type_in_c(ada_syntax) [multi_line \
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"${decimal}: record" \
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" some_component_in_c: int;" \
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"end record" ]
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set type_in_ada(c_syntax) "${decimal}: struct global_pack__some_type_in_ada"
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set type_in_ada(ada_syntax) "${decimal}: global_pack.some_type_in_ada"
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set var_in_c(c_syntax) "${decimal}: some_type_in_c some_struct_in_c;"
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set var_in_c(ada_syntax) "${decimal}: some_struct_in_c: some_type_in_c;"
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set var_in_ada(c_syntax) "${decimal}: struct global_pack__some_type_in_ada global_pack.some_struct_in_ada;"
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set var_in_ada(ada_syntax) "${decimal}: global_pack.some_struct_in_ada: global_pack.some_type_in_ada;"
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set rbreak_func_in_c(c_syntax) "void proc_in_c\\\(void\\\);"
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set rbreak_func_in_c(ada_syntax) "procedure proc_in_c;"
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set rbreak_func_in_ada(c_syntax) "void proc_in_ada\\\(void\\\);"
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set rbreak_func_in_ada(ada_syntax) "procedure proc_in_ada;"
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foreach_with_prefix language_choice { "auto" "ada" "c" } {
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# Check that switching to the desired language_choice when the selected
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# frame has the same language (or the desired language is auto) gives no
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# warning. Also set the expected matches for the various commands
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# tested afterwards.
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if {$language_choice == "auto"} {
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gdb_test "frame 0" "#0 .*" "select frame with lang c"
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set c_match c_syntax
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set ada_match ada_syntax
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} elseif {$language_choice == "ada"} {
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gdb_test "frame 1" "#1 .*" "select frame with lang ada"
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set c_match ada_syntax
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set ada_match ada_syntax
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} elseif {$language_choice == "c"} {
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gdb_test "frame 0" "#0 .*" "select frame with lang c"
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set c_match c_syntax
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set ada_match c_syntax
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} else {
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error "unexpected language choice"
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}
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gdb_test_no_output "set language $language_choice" "set language language_choice"
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foreach frame {
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"0"
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"1" } {
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if { $frame == 0 } {
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set frame_lang "c"
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} else {
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set frame_lang "ada"
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}
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with_test_prefix "frame=$frame, frame_lang=$frame_lang" {
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gdb_test "frame $frame" "#$frame .*" "select frame"
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gdb_test "info functions proc_in_" \
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[multi_line \
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"All functions matching regular expression \"proc_in_\":" \
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"" \
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"File .*proc_in_ada.adb:" \
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$func_in_ada($ada_match) \
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"" \
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"File .*some_c.c:" \
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$func_in_c($c_match)
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]
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gdb_test "info types some_type" \
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[multi_line \
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"All types matching regular expression \"some_type\":" \
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"" \
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"File .*global_pack.ads:" \
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$type_in_ada($ada_match)\
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"" \
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"File .*some_c.c:" \
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$type_in_c($c_match)
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]
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gdb_test "info variables some_struct" \
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[multi_line \
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"All variables matching regular expression \"some_struct\":" \
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"" \
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"File .*global_pack.ads:" \
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$var_in_ada($ada_match) \
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"" \
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"File .*some_c.c:" \
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$var_in_c($c_match)
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]
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gdb_test "rbreak proc_in_" \
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[multi_line \
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"Breakpoint.*file .*proc_in_ada.adb,.*" \
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$rbreak_func_in_ada($ada_match) \
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"Breakpoint.*file .*some_c.c,.*" \
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$rbreak_func_in_c($c_match)
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]
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delete_breakpoints
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}
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}
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}
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