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14 hours[gdb/testsuite, tclint] Fix gdb.threadsTom de Vries70-152/+153
Running tclint on the test-cases in gdb.threads shows a few problems. Fix these. Tested on x86_64-linux.
14 hours[gdb/testsuite, tclint] Fix gdb.pythonTom de Vries45-74/+74
Running tclint on the test-cases in gdb.python shows a few problems. Fix these. Tested on x86_64-linux.
14 hours[gdb/testsuite] Fix hardcoded constant in gdb.python/py-pp-maint.expTom de Vries1-1/+1
In test-case gdb.python/py-pp-maint.exp, I came across: ... gdb_test "disable pretty-printer global lookup_function_lookup_test" \ "1 printer disabled.*[expr $num_pp - 1] of $num_pp printers enabled" gdb_test "disable pretty-printer global pp-test;.*" \ "[expr 5] printers disabled.*0 of $num_pp printers enabled" ... The "[expr 5]" can simply be rewritten as "5", but instead use the construct used in the previous gdb_test: [expr {$num_pp - 1}], given that the numbers should match. Tested on x86_64-linux.
14 hours[gdb/testsuite, tclint] Fix gdb.btraceTom de Vries28-65/+65
Running tclint on the test-cases in gdb.btrace shows a few problems. Fix these. Tested on x86_64-linux.
14 hours[gdb/testsuite, tclint] Fix gdb.fortranTom de Vries49-63/+63
Running tclint on the test-cases in gdb.fortran shows a few problems. Fix these. Tested on x86_64-linux.
14 hours[gdb/testsuite, tclint] Fix gdb.reverseTom de Vries36-53/+53
Running tclint on the test-cases in gdb.reverse shows a few problems. Fix these. Tested on x86_64-linux.
14 hours[gdb/testsuite, tclint] Fix gdb.guileTom de Vries24-53/+53
Running tclint on the test-cases in gdb.guile shows a few problems. Fix these. Tested on x86_64-linux.
32 hoursNew '--binary-output' command line option, fix gdb.mi/ testing on WindowsPedro Alves1-1/+1
MI testcases currently all fail on native Windows with: Running /c/gdb/src/gdb/testsuite/gdb.mi/mi-simplerun.exp ... ERROR: (timeout) GDB never initialized after 10 seconds. This is because when GDB is started in MI mode, it prints info to the terminal before -iex options are processed. I.e., before the "maint set console-translation-mode binary" command in gdb -nw -nx -q -iex "set height 0" -iex "set width 0" \ -iex "set interactive-mode on" \ -iex "maint set console-translation-mode binary" \ -i=mi ... is processed. This results in GDB printing early output with \r\r\n, like can be easily seen by passing --debug to runtest: expect: does "=thread-group-added,id="i1"\r\r\n=cmd-param-changed,param="width",value="4294967295"\r\r\n=cmd-param-changed,param="interactive-mode",value="on"\r\r\n(gdb) \r\n" (spawn_id exp10) match regular expression "~"GNU.*\r\n~".*[(]gdb[)] \r\n$"? Gate "~"GNU*\r\n~"*gdb? \r\n"? gate=no Fix this by adding a new Windows-only --binary-output command line option to GDB, which is processed much earlier than -iex, and making the testsuite pass that instead of "maint set console-translation-mode binary". Remove "maint set console-translation-mode" completely, since the only reason it existed was for the testsuite, and it was never included in any release. Reviewed-By: Eli Zaretskii <eliz@gnu.org> Reviewed-By: Tom de Vries <tdevries@suse.de> Change-Id: I4632707bb7c8ca573cffff9641ddeb33a0e150af
33 hoursChange DAP condition for Ada exception catchpointTom Tromey2-4/+17
Currently, the gdb DAP implementation doesn't provide a way to filter based on the thrown Ada exception. There isn't really an ideal way to handle this in DAP: * Requiring an IDE to use an expression checking $_ada_exception exposes the IDE to any workarounds needed to get this correct (see ada-lang.c). * The setExceptionBreakpoint "filterOptions" field doesn't allow a special kind of condition to be set. (We could add one but we've generally avoided gdb-specific extensions.) * The "exceptionOptions" approach is under-documented. It could be used but it would have to be in a somewhat gdb-specific way anyway -- and this approach does not allow a separate condition that is an expression. So, after some internal discussion, we agreed that it isn't all that useful to have conditions on Ada exception catchpoints. This patch changes the implementation to treat the condition as an exception name here.
34 hoursCorrect bounds check when working around GAS DWARF 5 directory table bugKeith Seitz1-35/+57
Recent Go toolchains are causing GDB to crash on a relatively recent workaround for a GAS bug: commit a833790a626d9620319d0ca6aee23daa584d445c Date: Wed Nov 1 00:33:12 2023 +0100 [gdb/symtab] Work around gas PR28629 In the original GAS bug, the first directory table entry did not contain the current directory of the compilation. So the above commit added a workaround fix to prepend the second directory table entry. However recent Go toolchain compilations (specifically on aarch64) only output a single directory table entry. Looking at the workaround: if (lh->version == 5 && lh->is_valid_file_index (1)) { std::string dir = lh->include_dir_at (1); fnd.set_comp_dir (std::move (dir)); } `lh->is_valid_file_index (1)' is true, but since the directory table only has one entry, `include_dir_at (1)' returns nullptr. Consequently the std::string ctor will segfault. Since there are no guarantees that the file and directory tables are the same size, a better bounds check is to simply rely on `include_dir_at' to ensure a valid directory table entry. I have updated the workaround commit's test, gdb.dwarf2/dw2-gas-workaround.exp and tested on x86_64 and aarch64 RHEL 9 and Fedora 41. Approved-By: Andrew Burgess <aburgess@redhat.com>
35 hoursHandle Ada extended access thick pointersTom Tromey2-0/+67
In Ada, sometimes an array is represented as a "thick" pointer -- a structure that holds a pointer to the array data and another pointer to the bounds structure. A new "extended access" feature is being added to GNAT which changes the shape of these objects. With the new feature, the bounds are inlined into the thick pointer. This patch changes gdb to understand this new feature. A test case is provided; it is written in C to avoid requiring a newer GNAT just for this test. Approved-By: Andrew Burgess <aburgess@redhat.com>
35 hoursHandle optimized-out values in gdb.printing.make_visualizerTom Tromey1-0/+176
This changes gdb.printing.make_visualizer to treat an optimized-out pointer as a scalar variable -- that is, one that does not advertise any children. This makes sense because such a pointer cannot be dereferenced. The test case checks this case, plus it ensures that synthetic pointers still continue to work. Approved-By: Andrew Burgess <aburgess@redhat.com>
3 daysHave gdb.ThreadExitedEvent inherit from gdb.ThreadEventTom Tromey1-0/+2
The documentation says that ThreadExitedEvent is derived from ThreadEvent, but the code does not actually implement this. This patch fixes the problem. I propose applying this to gdb 17 as well. Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=33444 Approved-By: Simon Marchi <simon.marchi@efficios.com>
3 days[gdb/testsuite, tclint] Fix gdb.openclTom de Vries1-25/+25
Running tclint on the test-cases in gdb.opencl shows a few problems. Fix these. Tested on x86_64-linux.
3 days[gdb/testsuite, tclint] Fix gdb.perfTom de Vries8-10/+10
Running tclint on the test-cases in gdb.perf shows a few problems. Fix these. Tested on x86_64-linux.
3 days[gdb/testsuite, tclint] Fix gdb.compileTom de Vries8-17/+21
Running tclint on the test-cases in gdb.compile shows a few problems. While we're at it, likewise in lib/compile-support.exp Fix these. Tested on x86_64-linux (Fedora 42).
3 days[gdb/testsuite, tclint] Fix gdb.dapTom de Vries3-4/+9
Running tclint on gdb.dap shows these warnings: ... bt-nodebug.exp:74:16: namespace eval received an argument with a \ substitution, unable to parse its arguments [command-args] eof.exp:33:1: expected braced word or word without substitutions in argument \ interpreted as script [command-args] eof.exp:34:1: expected braced word or word without substitutions in argument \ interpreted as script [command-args] ... The first one is for: ... set list_form [namespace eval ton::2list $last_ton] ... I don't think this can be fixed by rewriting into something similar, so ignore this. Likewise in lib/dap-support.exp. The second and third ones are for: ... catch "close -i $gdb_spawn_id" catch "wait -i $gdb_spawn_id" ... which can easily be fixed by using curly braces instead of double quotes, but doing so gets us: ... eof.exp:33:8: unrecognized argument for close: -i [command-args] ... This is because tclint doesn't have support for expect yet [1], so ignore this. While we're at it, fix some trailing whitespace in lib/dap-support. Approved-By: Tom Tromey <tom@tromey.com> [1] https://github.com/nmoroze/tclint/issues/118
4 daysgdb: fix --args handling when inferior argument have dashAndrew Burgess1-0/+13
After the commit: commit e5e76451fa82e0bc00599af96382b361c3d6ac32 Date: Fri Oct 22 07:19:29 2021 +0000 gdb/gdbserver: add a '--no-escape-args' command line option Inferior argument handling on the GDB command line was broken: $ gdb --args /bin/ls --foo ./gdb/gdb: unrecognized option '--foo' ./gdb/gdb: `--args' specified but no program specified Before the above patch the definition of the '--args' argument in the long_options array (in captured_main_1) was such that the getopt_long_only call would directly set the 'set_args' variable to true if '--args' was seen. This meant that, immediately after the getopt_long_only call, we could inspect set_args and break out of the argument processing loop if needed. After the above patch '--args' (and the new '--no-escape-args') no longer set set_args directly via the getopt_long_only call. Instead the getopt_long_only call returns an OPT_* enum value, which we then use in the following switch statement in order to set the set_args variable. What this means is that, immediately after the getopt_long_only call, set_args no longer (immediately) indicates if --args was seen. After the switch statement, when set_args has been updated, we go around the argument processing loop again and call getopt_long_only once more. This extra getopt_long_only call will, if it finds another argument that starts with a dash, update the global optind to point to this option. At this point things have gone wrong, GDB has now lost track of the argument containing the program name the user wanted us to start. This leads to GDB exiting with the above error. The solution is to move the check of set_args to either before the getopt_long_only call, or to after the switch statement. I chose to move it earlier as this keeps all the loop exiting checks near the beginning. I've added more tests that cover this issue. Approved-By: Luis Machado <luis.machado.foss@gmail.com> Tested-By: Luis Machado <luis.machado.foss@gmail.com>
4 days[gdb/testsuite, tclint] Fix gdb.adaTom de Vries17-28/+28
Running tclint on the test-cases in gdb.ada shows a few problems. Fix these. Tested on x86_64-linux.
4 days[gdb/testsuite, tclint] Fix gdb.asmTom de Vries1-15/+15
Running tclint on the test-cases in gdb.asm shows a few problems. Fix these. Tested on x86_64-linux.
4 days[gdb/testsuite, tclint] Fix gdb.disasmTom de Vries2-7/+7
Running tclint on the test-cases in gdb.disasm shows a few problems. Fix these. Tested on x86_64-linux.
4 days[gdb/testsuite, tclint] Fix gdb.goTom de Vries4-6/+6
Running tclint on the test-cases in gdb.go shows a few problems. Fix these. Tested on x86_64-linux.
4 days[gdb/testsuite, tclint] Fix gdb.gdbTom de Vries2-6/+6
Running tclint on the test-cases in gdb.gdb shows a few problems. Fix these. Tested on x86_64-linux.
4 days[gdb/testsuite, tclint] Fix gdb.dlangTom de Vries4-4/+4
Running tclint on the test-cases in gdb.dlang shows a few problems. Fix these. Tested on x86_64-linux.
4 days[gdb/testsuite, tclint] Fix gdb.ctfTom de Vries1-3/+3
Running tclint on the test-cases in gdb.ctf shows a few problems. Fix these. Tested on x86_64-linux.
4 days[gdb/testsuite, tclint] Fix gdb.server some moreTom de Vries1-2/+2
Running tclint on the test-cases in gdb.server shows a few problems. Fix these. Tested on x86_64-linux.
4 days[gdb/testsuite, tclint] Fix gdb.debuginfodTom de Vries1-2/+2
Running tclint on the test-cases in gdb.debuginfod shows a few problems. Fix these. Tested on x86_64-linux.
4 days[gdb/testsuite, tclint] Fix gdb.linespecTom de Vries7-9/+9
Running tclint on the test-cases in gdb.linespec shows a few problems. Fix these. Tested on x86_64-linux.
4 days[gdb/testsuite, tclint] Fix gdb.multiTom de Vries5-12/+12
Running tclint on the test-cases in gdb.multi shows a few problems. Fix these. Tested on x86_64-linux.
4 days[gdb/testsuite] Remove more uses of "eval"Tom de Vries6-11/+10
Remove some more uses of the Tcl "eval" proc. In most cases the {*} "splat" expansion is used instead. The exceptions are: - gdb.base/inferior-args.exp where we rewrite: set cmd [format "lappend item \{ '%c' '\\%c' \}" 34 34] eval $cmd into: lappend item [format { '%c' '\%c' } 34 34] - reset_vars in lib/check-test-names.exp where we simply drop an unnecessary eval Tested on x86_64-linux. Approved-By: Tom Tromey <tom@tromey.com>
4 daysTreat attributes as code in DWARF assemblerTom Tromey186-4200/+4281
The DWARF assembler treats the 'children' of a DIE as plain Tcl code, evaluating it in the parent context. I don't recall why, but when I wrote this code, I didn't do the same thing for the attributes. Instead, there I implemented a special syntax. I was looking at this today and wondered why I didn't just use ordinary evaluation as well. This patch implements this idea. Attributes are now evaluated as plain code. This is a bit less "magical", is slightly shorter due to lack of braces, and most importantly now allows comments in the attributes section. Note that some [subst {}] calls had to be added. This could be fixed by changing DWARF expressions to also be plain Tcl code. I think that would be a good idea, but I didn't want to tack it on here. This patch requires the full ("DW_AT_...") name for attributes. I did this to avoid any possibility of name clashes. I've long considered that my original decision to allow short names for tags and attributes was a mistake. It's worth noting that many existing tests already used the long names here. Most of this patch was written by script. The main changes are in dwarf.exp, but as noted, there were some minor fixups needed in some tests. Also, after committing, 'git show' indicated some whitespace issues, so I've gone through and "tabified" some things, which is why the patch might be otherwise larger than it should be. (This was discussed a bit during the v1 submission.) v1 was here: https://inbox.sourceware.org/gdb-patches/20250530183845.2179955-1-tromey@adacore.com/ In v2 I've rebased and fixed up various tests that either changed or were added since v1. Regression tested on x86-64 Fedora 41. Approved-By: Simon Marchi <simon.marchi@efficios.com>
5 daysFix gdb.base/gcorebg.exp and --program-prefixPedro Alves1-2/+2
When GDB is configured with --program-prefix, we see: Running /home/pedro/gdb/src/gdb/testsuite/gdb.base/gcorebg.exp ... FAIL: gdb.base/gcorebg.exp: detached=detached: Spawned gcore finished FAIL: gdb.base/gcorebg.exp: detached=detached: Core file generated by gcore FAIL: gdb.base/gcorebg.exp: detached=standard: Spawned gcore finished FAIL: gdb.base/gcorebg.exp: detached=standard: Core file generated by gcore The problem is here (with --program-prefix=prefix-), from gdb.log: gcore: GDB binary (/home/pedro/gdb/build-program-prefix/gdb/testsuite/../../gdb/prefix-gdb) not found FAIL: gdb.base/gcorebg.exp: detached=detached: Spawned gcore finished That is gcore (the script, not the GDB command) trying to run the installed GDB: if [ ! -f "$binary_path/@GDB_TRANSFORM_NAME@" ]; then echo "gcore: GDB binary (${binary_path}/@GDB_TRANSFORM_NAME@) not found" exit 1 fi ... "$binary_path/@GDB_TRANSFORM_NAME@" </dev/null \ ... When running the testsuite with the just-built GDB, the GDB binary is 'gdb', not @GDB_TRANSFORM_NAME@. Fix this by adding a new '-g gdb" option to the 'gcore' script, that lets you override the GDB binary gcore runs, and then making gdb.base/gcorebg.exp pass it to gcore. The GDB binary we're testing is always in the $GDB global. This is similar to how it is already possible to specify GDB's data directory with an option to gcore, and then gdb.base/gcorebg.exp uses it. NEWS and documentation changes included. Approved-by: Kevin Buettner <kevinb@redhat.com> Change-Id: I6c60fba8768618eeba8d8d03b131dc756b57ee78
5 daysFix nested gdb_caching_proc with argsPedro Alves3-25/+21
Commit d09eba07 ("Make get_compiler_info use gdb_caching_proc") regressed some tests when you run them in isolation (as this depends on the order the gdb_caching_proc procs' results are cached). E.g.: Running /home/pedro/rocm/gdb/build/gdb/testsuite/../../../src/gdb/testsuite/gdb.rocm/simple.exp ... ERROR: tcl error sourcing /home/pedro/rocm/gdb/build/gdb/testsuite/../../../src/gdb/testsuite/gdb.rocm/simple.exp. ERROR: tcl error code TCL WRONGARGS ERROR: wrong # args: should be "gdb_real__get_compiler_info_1 language" while executing "gdb_real__get_compiler_info_1" ("uplevel" body line 1) invoked from within "uplevel 2 $real_name" (procedure "gdb_do_cache_wrap" line 3) invoked from within "gdb_do_cache_wrap $real_name {*}$args" (procedure "gdb_do_cache" line 98) invoked from within gdb.base/attach.exp triggers it too, for example. This is actually a latent problem in gdb_do_cache_wrap, introduced in: commit 71f1ab80f1aabd70bce526635f84c7b849e8a0f4 CommitDate: Mon Mar 6 16:49:19 2023 +0100 [gdb/testsuite] Allow args in gdb_caching_proc This change: # Call proc real_name and return the result, while ignoring calls to pass. -proc gdb_do_cache_wrap {real_name} { +proc gdb_do_cache_wrap {real_name args} { if { [info procs save_pass] != "" } { return [uplevel 2 $real_name] <<<<<<<<<<<<<<<<<<<<<<< HERE } @@ -31,7 +31,7 @@ proc gdb_do_cache_wrap {real_name} { rename pass save_pass rename ignore_pass pass - set code [catch {uplevel 2 $real_name} result] + set code [catch {uplevel 2 [list $real_name {*}$args]} result] Missed updating the line marked with HERE above, to pass down $args. So the case of a caching proc calling another caching proc with args isn't handled correctly. We could fix this by fixing the HERE line like so: - return [uplevel 2 $real_name] + return [uplevel 2 [list $real_name {*}$args]] However, we have with_override nowadays that we can use here which eliminates the duplicated logic, which was what was missed originally. A new test that exposes the problem is added to gdb.testsuite/gdb-caching-proc.exp. This also adds a new test to gdb.testsuite/with-override.exp that I think was missing, making sure that the inner foo override restores the outer foo override. Tested-By: Simon Marchi <simon.marchi@efficios.com> Change-Id: I8b2a7366bf910902fe5f547bde58c3b475bf5133
5 daysMake get_compiler_info use gdb_caching_procPedro Alves2-34/+24
While running tests on Windows with: $ make check-parallel RUNTESTFLAGS="-v" I noticed that get_compiler_info was invoking the compiler over and over for each testcase, even though the result is supposed to be cached. This isn't normally very visible in gdb.log, because we suppress it there: # Run $ifile through the right preprocessor. # Toggle gdb.log to keep the compiler output out of the log. set saved_log [log_file -info] log_file ... I'm not sure it's a good idea to do that suppression, BTW. I was very confused when I couldn't find the compiler invocation in gdb.log, and it took me a while to notice that code. The reason get_compiler_info in parallel mode isn't hitting the cache is that in that mode each testcase runs under its own expect/dejagnu process, and the way get_compiler_info caches results currently doesn't handle that -- the result is simply cached in a global variable, which is private to each expect. So improve this by switching get_compiler_info's caching mechanism to gdb_caching_proc instead, so that results are cached across parallel invocations of dejagnu. On an x86-64 GNU/Linux run with "make check-parallel -j32", before the patch I get 2223 calls to get_compiler_info that result in a compiler invocation. After the patch, I get 7. On GNU/Linux, those compiler invocations don't cost much, but on Windows, they add up. On my machine each invocation takes around 500ms to 700ms. Here is one representative run: $ time x86_64-w64-mingw32-gcc \ /c/msys2/home/alves/gdb/build-testsuite/temp/14826/compiler.c \ -fdiagnostics-color=never -E ... real 0m0.639s user 0m0.061s sys 0m0.141s This reference to a 'compiler_info' global: # N.B. compiler_info is intended to be local to this file. # Call test_compiler_info with no arguments to fetch its value. # Yes, this is counterintuitive when there's get_compiler_info, # but that's the current API. if [info exists compiler_info] { unset compiler_info } is outdated, even before this patch, as "compiler_info" is a local variable in get_compiler_info. Remove all that code. Since test_compiler_info now calls get_compiler_info directly, the "Requires get_compiler_info" comments in skip_inline_frame_tests and skip_inline_var_tests are no longer accurate. Remove them. test_compiler_info's intro comment is also outdated; improve it. Changing the return value of get_compiler_info to be the 'compiler_info' string directly instead of 0/-1 was simpler. It would be possible to support the current 0/-1 interface by making get_compiler_info_1 still return the 'compiler_info' string, and then having the get_compiler_info wrapper convert to 0/-1, and I considered doing that. But the only caller of get_compiler_info outside gdb.exp is gdb.python/py-event-load.exp, and it seems that one simply crossed wires with: commit 9704b8b4bc58f4f464961cca97d362fd33740ce8 gdb/testsuite: remove unneeded calls to get_compiler_info as the test as added at roughly the same time as that commit. So simply remove that call in gdb.python/py-event-load.exp, otherwise we get something like: ERROR: ------------------------------------------- ERROR: in testcase src/gdb/testsuite/gdb.python/py-event-load.exp ERROR: expected boolean value but got "gcc-13-3-0" ERROR: tcl error code TCL VALUE NUMBER ERROR: tcl error info: expected boolean value but got "gcc-13-3-0" Approved-By: Tom Tromey <tom@tromey.com> Change-Id: Ia3d3dc34f7cdcf9a2013f1054128c62a108eabfb
6 daysRemove uses of "eval" from gdb testsuiteTom Tromey22-56/+53
This patch removes a lot of uses of the Tcl "eval" proc from the gdb test suite. In most cases the {*} "splat" expansion is used instead. A few uses of eval remain, primarily ones that were more complicated to untangle. In a couple of tests I also replaced some ad hoc code with string_to_regexp. Tested on x86-64 Fedora 40. Reviewed-By: Tom de Vries <tdevries@suse.de>
6 daysgdb: improve show text and help text for 'remote exec-file'Andrew Burgess2-3/+6
The current behaviour for 'show remote exec-file' is this: (gdb) show remote exec-file (gdb) set remote exec-file /abc (gdb) show remote exec-file /abc (gdb) The first output, the blank line, is just GDB showing the default empty value. This output is not really inline with GDB's more full sentence style output, so in this commit I've updated things, the output is now: (gdb) show remote exec-file The remote exec-file is unset, the default remote executable will be used. (gdb) set remote exec-file /abc (gdb) show remote exec-file The remote exec-file is "/abc". (gdb) Which I think is more helpful to the user. I have also updated the help text for this setting. Previously we had a set/show header line, but no body text, now we have: (gdb) help show remote exec-file Show the remote file name for starting inferiors. This is the file name, on the remote target, used when starting an inferior, for example with the \"run\", \"start\", or \"starti\" commands. This setting is only useful when debugging a remote target, otherwise, this setting is not used. (gdb) Which I think is more helpful. Reviewed-By: Mark Wielaard <mark@klomp.org> Tested-By: Mark Wielaard <mark@klomp.org> Reviewed-By: Eli Zaretskii <eliz@gnu.org> Approved-By: Tom Tromey <tom@tromey.com>
6 daysgdb: improve how 'remote exec-file' is stored and accessedAndrew Burgess1-0/+13
This commit makes two related changes. The goal of the commit is to update the 'remote exec-file' setting to work correctly in a multi-inferior setup. To do this I have switched from the older style add_setshow_* function, which uses a single backing variable, to the newer style add_setshow_* functions that uses a get/set callback. The get/set callbacks now directly access the state held in the progspace which ensures that the correct value is always returned. However, the new get/set API requires that the get callback return a reference to the setting's value, which in this case needs to be a std::string. Currently the 'remote exec-file' setting is stored as a 'char *' string, which isn't going to work. And so, this commit also changes 'remote exec-file' to be stored as a std::string within the progspace. Now, when switching between multiple inferiors, GDB can correctly inform the user about the value of the 'remote exec-file' setting. Approved-By: Tom Tromey <tom@tromey.com>
8 days[gdb/testsuite] Fix test names in gdb.tui/{empty,new-layout}.expTom de Vries2-2/+2
Post-commit review [1] pointed out that this change in gdb.tui/empty.exp: ... - eval Term::check_box [list "box $boxno"] $box + Term::check_box [list "box $boxno"] {*}$box ... is incomplete because it leaves the "[list ...]" in place. Indeed, it changes the test name like this: ... -PASS: gdb.tui/empty.exp: src: 80x24: box 1 +PASS: gdb.tui/empty.exp: src: 80x24: {box 1} ... Fix this by dropping the "[list ...]". Likewise in gdb.tui/new-layout.exp. [1] https://sourceware.org/pipermail/gdb-patches/2025-September/220863.html
8 daysgdb, gdbserver: fix typosSimon Marchi1-2/+2
Found by the codespell pre-commit hook. Change-Id: Iafadd9485ce334c069dc8dbdab88ac3fb5fba674
8 daysFix 32-bit failure in array_long_idx.expTom Tromey1-1/+4
Testing on the AdaCore-internal equivalent to array_long_idx.exp showed that it failed on 32-bit targets. This patch fixes the problem by arranging to use types that aren't target-dependent.
8 daysgdb: clear proceed status before starting a new inferiorAndrew Burgess1-0/+109
This patch fixes a bug when 'set schedule-multiple on' is in use and a second inferior is started using the 'run' command (or 'start' or 'starti'). This bug was reported as PR gdb/28777. The problem appears as the first inferior terminating with an unexpected SIGTRAP. The bug can be reproduced like this: gdb -ex 'set schedule-multiple on' \ -ex 'file /tmp/spin' \ -ex 'break main' \ -ex 'run' \ -ex 'add-inferior' \ -ex 'inferior 2' \ -ex 'file /tmp/spin' \ -ex 'break main' \ -ex 'run' The final 'run' can be replaced with 'start' or 'starti'. The output is different in the 'starti' case, but the cause is the same. For the 'run' and 'start' cases the final output is: Starting program: /tmp/spin Program terminated with signal SIGTRAP, Trace/breakpoint trap. The program no longer exists. In the 'starti' case the output is: Starting program: /tmp/spin Thread 2.1 "spin" stopped. Cannot remove breakpoints because program is no longer writable. Further execution is probably impossible. 0x00007ffff7fd3110 in _start () from /lib64/ld-linux-x86-64.so.2 What's happening is that GDB is failing to clear the previous proceed status from inferior 1 before starting inferior 2. Normally when schedule-multiple is off, this isn't a problem as 'run' only starts the new inferior, and the new inferior will have no previous proceed status that needs clearing. But when schedule-multiple is on, starting a new inferior, with 'run' and friends, will actually start all inferiors, including those that previous stopped at a breakpoint with a SIGTRAP signal. By failing to clear out the proceed status for those threads, when GDB restarts inferior 1 it arranges for the thread to receive the SIGTRAP, which is delivered, and, as GDB isn't expecting a SIGTRAP, is allowed to kill the process. Fix this by calling clear_proceed_status from run_command_1. Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=28777
8 daysgdb: ensure thread state is updated when remote target starts upAndrew Burgess1-9/+0
This patch fixes a bug that was exposed by a test added in the previous commit. After writing this patch I also discovered that this issue had been reported as PR gdb/27322. When 'maint set target-non-stop on' is in effect, then the remote targets will be running in non-stop mode. The previous commit revealed a bug where, in this mode, GDB can fail to copy the thread state from the target to the GDB frontend, this leaves the thread marked as running in the frontend, even though the thread is actually stopped. When this happens the user is no longer able to interrupt the thread (it's already stopped), nor can the user resume the thread (GDB thinks the threads is running). To reproduce the bug: gdb -q -ex 'maint set target-non-stop on' \ -ex 'set non-stop off' \ -ex 'set sysroot' \ -ex 'file /bin/ls' \ -ex 'run &' \ -ex 'add-inferior' \ -ex 'infer 2' \ -ex 'set sysroot' \ -ex 'target remote | gdbserver - ls' \ -ex 'info threads' The 'info threads' output will look something like: Id Target Id Frame 1.1 process 1746383 "ls" (running) * 2.1 Thread 1746389.1746389 "ls" 0x00007ffff7fd3110 in _start () from /lib64/ld-linux-x86-64.so.2 The thread 1.1 should be stopped. GDB is running in all-stop mode after all. The problem is that in remote_target::process_initial_stop_replies, there is a call to stop_all_threads, however, the changes in the thread state are never copied back to the GDB frontend. This leaves the threads stopped, but still marked running. Solve this by adding a scoped_finish_thread_state. This is similar to how scoped_finish_thread_state is used in run_command_1 when we start a new inferior running. Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=27322
8 daysgdb: disable commit resumed in wait_for_inferiorAndrew Burgess2-0/+218
This patch proposes a fix for PR gdb/33147. The bug can be reproduced like this: gdb -q -ex 'file /bin/ls' \ -ex 'run &' \ -ex 'add-inferior' \ -ex 'infer 2' \ -ex 'set sysroot' \ -ex 'target remote | gdbserver - ls' Which will trigger an assertion failure: target.c:3760: internal-error: target_stop: Assertion `!proc_target->commit_resumed_state' failed. The problem is that target_stop is being called for a target when commit_resumed_state is true, the comment on process_stratum_target::commit_resumed_state is pretty clear: To simplify the implementation of targets, the following methods are guaranteed to be called with COMMIT_RESUMED_STATE set to false: - resume - stop - wait So clearly we're breaking a precondition of target_stop. In this example there are two target, the native target (inferior 1), and the remote target (inferior 2). It is the first, the native target, for which commit_resumed_state is set incorrectly. At the point target_stop is called looks like this: #11 0x00000000009a3c19 in target_stop (ptid=...) at ../../src/gdb/target.c:3760 #12 target_stop (ptid=...) at ../../src/gdb/target.c:3756 #13 0x00000000007042f2 in stop_all_threads (reason=<optimized out>, inf=<optimized out>) at ../../src/gdb/infrun.c:5739 #14 0x0000000000711d3a in wait_for_inferior (inf=0x2b90fd0) at ../../src/gdb/infrun.c:4412 #15 start_remote (from_tty=from_tty@entry=1) at ../../src/gdb/infrun.c:3829 #16 0x0000000000897014 in remote_target::start_remote_1 (this=this@entry=0x2c4a520, from_tty=from_tty@entry=1, extended_p=extended_p@entry=0) at ../../src/gdb/remote.c:5350 #17 0x00000000008976e7 in remote_target::start_remote (extended_p=0, from_tty=1, this=0x2c4a520) at ../../src/gdb/remote.c:5441 #18 remote_target::open_1 (name=<optimized out>, from_tty=1, extended_p=0) at ../../src/gdb/remote.c:6312 #19 0x00000000009a815f in open_target (args=0x7fffffffa93c "| gdbserver - ls", from_tty=1, command=<optimized out>) at ../../src/gdb/target.c:838 For new inferiors commit_resumed_state starts set to false, for this reason, if we only start a remote inferior, then when wait_for_inferior is called commit_resumed_state will be false, and everything will work. Further, as target_stop is only called for running threads, if, when the remote inferior is started, all other threads (in other targets) are already stopped, then GDB will never need to call target_stop for the other targets, and so GDB will not notice that commit_resumed_state for those target is set to true. In this case though, as the first (native) inferior is left running in the background while the remote inferior is created, and because GDB is running in all-stop mode (so needs to stop all threads in all targets), then GDB does call target_stop for the other targets, and so spots that commit_resumed_state is not set correctly and asserts. The fix is to add scoped_disable_commit_resumed somewhere in the call stack. Initially I planned to add the scoped_disable_commit_resumed in `wait_for_inferior`, however, this isn't good enough. This location would solve the problem as described in the bug, but when writing the test I extended the problem to also cover non-stop mode, and this runs into a second problem, the same assertion, but triggered from a different call path. For this new case the stack looks like this: #1 0x0000000000fb0e50 in target_stop (ptid=...) at ../../src/gdb/target.c:3771 #2 0x0000000000a7f0ae in stop_all_threads (reason=0x1d0ff74 "remote connect in all-stop", inf=0x0) at ../../src/gdb/infrun.c:5756 #3 0x0000000000d9c028 in remote_target::process_initial_stop_replies (this=0x3e10670, from_tty=1) at ../../src/gdb/remote.c:5017 #4 0x0000000000d9cdf0 in remote_target::start_remote_1 (this=0x3e10670, from_tty=1, extended_p=0) at ../../src/gdb/remote.c:5405 #5 0x0000000000d9d0d4 in remote_target::start_remote (this=0x3e10670, from_tty=1, extended_p=0) at ../../src/gdb/remote.c:5457 #6 0x0000000000d9e8ac in remote_target::open_1 (name=0x7fffffffa931 "| gdbserver - /bin/ls", from_tty=1, extended_p=0) at ../../src/gdb/remote.c:6329 #7 0x0000000000d9d167 in remote_target::open (name=0x7fffffffa931 "| gdbserver - /bin/ls", from_tty=1) at ../../src/gdb/remote.c:5479 #8 0x0000000000f9914d in open_target (args=0x7fffffffa931 "| gdbserver - /bin/ls", from_tty=1, command=0x35d1a40) at ../../src/gdb/target.c:838 So I'm now thinking that stop_all_threads would be the best place for the scoped_disable_commit_resumed. I did leave an assert in wait_for_inferior as, having thought about the assert some, I do still think the logic of it is true, and it doesn't hurt to leave it in place I think. However, it's not quite that simple, the test throws up yet another bug when we 'maint set target-non-stop on', but then 'set non-stop off'. This bug leaves a stopped thread marked as "(running)" in the 'info threads' output. I have a fix for this issue, but I'm leaving that for the next commit. For now I've just disabled part of the test in the problem case. I've also tagged this patch with PR gdb/27322. That bug was created before the above assert was added, but if you follow the steps to reproduce for that bug today you will hit the above assert. The actual issue described in PR gdb/27322 is fixed in the next patch. Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=27322 Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=33147
8 daysgdb: ensure normal stop finishes the thread state of all threadsAndrew Burgess2-0/+190
This patch fixes a multi-target issue where the normal_stop function can fail to finish the thread state of threads from a non current target, this leaves the threads marked as running in GDB core, while the threads is actually stopped. For testing I used this test program: #include <unistd.h> int main () { while (1) sleep (1); return 0; } Compile this to make '/tmp/spin', then the bug can be shown using this command: $ gdb -ex 'file /tmp/spin' \ -ex 'start' \ -ex 'add-inferior' \ -ex 'inferior 2' \ -ex 'set sysroot' \ -ex 'target extended-remote | gdbserver --multi --once - /tmp/spin' \ -ex 'inferior 1' \ -ex 'continue&' \ -ex 'inferior 2' \ -ex 'search sleep' \ -ex 'break $_ inferior 2' \ -ex 'continue' \ -ex 'info threads' The interesting part of the output is: Id Target Id Frame 1.1 process 1610445 "spin" (running) * 2.1 Thread 1610451.1610451 "spin" main () at spin.c:7 (gdb) Notice that thread 1.1 is marked as running when it should be stopped. We can see that the thread is actually stopped if we try this: (gdb) inferior 1 [Switching to inferior 1 [process 1610445] (/tmp/spin)] [Switching to thread 1.1 (process 1610445)](running) (gdb) continue Cannot execute this command while the selected thread is running. (gdb) interrupt (gdb) info threads Id Target Id Frame * 1.1 process 1610445 "spin" (running) 2.1 Thread 1610451.1610451 "spin" main () at spin.c:7 (gdb) We can see the expected behaviour if both inferiors run on the same target, like this: $ gdb -ex 'file /tmp/spin' \ -ex 'start' \ -ex 'add-inferior' \ -ex 'inferior 2' \ -ex 'file /tmp/spin' \ -ex 'start' \ -ex 'inferior 1' \ -ex 'continue&' \ -ex 'inferior 2' \ -ex 'search sleep' \ -ex 'break $_ inferior 2' \ -ex 'continue' \ -ex 'info threads' The 'info threads' from this series of commands looks like this: Id Target Id Frame 1.1 process 1611589 "spin" 0x00007ffff7e951e7 in nanosleep () from /lib64/libc.so.6 * 2.1 process 1611593 "spin" main () at spin.c:7 (gdb) Now both threads are stopped as we'd expect. The problem is in normal_stop. The scoped_finish_thread_state uses user_visible_resume_target to select the target(s) over which GDB will iterate to find the threads to update. The problem with this is that when the ptid_t is minus_one_ptid, meaning all threads, user_visible_resume_target only returns nullptr, meaning all targets, when sched_multi is true. This dependency on sched_multi makes sense when _resuming_ threads. If we are resuming all threads, then when sched_multi (the schedule-multiple setting) is off (the default), all threads actually means all threads in the current inferior only. When sched_multi is true (schedule-multiple is on) then this means all threads, from all inferiors, which means GDB needs to consider every target. However, when stopping an inferior in all-stop mode (non_stop is false), then GDB wants to stop all threads from all inferiors, regardless of the sched_multi setting. What this means is that, when 'non_stop' is false, then we should be passing nullptr as the target selection to scoped_finish_thread_state. My proposal is that we should stop using user_visible_resume_target in the normal_stop function for the target selection of the scoped_finish_thread_state, instead we should manually figure out the correct target value and pass this in. There is precedent for this in GDB, see run_command_1, where 'finish_target' is calculated directly within the function rather than using user_visible_resume_target. After this commit, when using two different targets (native and remote) as in my first example above, both threads will be correctly stopped.
9 days[gdb/testsuite] Remove use of then keyword some moreTom de Vries6-9/+9
Find uses of the then keyword: ... $ find gdb/testsuite/ -type f -name *.exp* | xargs grep "if.*then {" ... and remove them. See also commit d4c4542312c ("gdb/testsuite: remove use of then keyword from library files") and related commits. Tested on aarch64-linux.
9 days[gdb/testsuite, tclint] Fix gdb.objcTom de Vries1-1/+1
Running tclint on the test-cases in gdb.opt shows a problem. Fix it. Tested on aarch64-linux.
9 days[gdb/testsuite, tclint] Fix gdb.optTom de Vries3-3/+3
Running tclint on the test-cases in gdb.opt shows a few problems. Fix these. Tested on aarch64-linux.
9 days[gdb/testsuite, tclint] Fix gdb.pascalTom de Vries6-10/+10
Running tclint on the test-cases in gdb.pascal shows a few problems. Fix these. Tested on aarch64-linux.
9 days[gdb/testsuite, tclint] Fix gdb.rocmTom de Vries1-3/+3
Running tclint on the test-cases in gdb.rocm shows a few problems: ... precise-memory-multi-inferiors.exp:33:5: expected braced word or word \ without substitutions in argument interpreted as expr [command-args] precise-memory-multi-inferiors.exp:43:5: expected braced word or word \ without substitutions in argument interpreted as expr [command-args] precise-memory-multi-inferiors.exp:55:5: expected braced word or word \ without substitutions in argument interpreted as expr [command-args] ... Fix these. The gdb.rocm test-cases are unsupported for me, so I can't test this.
9 days[gdb/testsuite, tclint] Fix gdb.rustTom de Vries2-2/+2
Running tclint on the test-cases in gdb.rust shows a few problems: ... modules.exp:37:1: expected braced word or word without substitutions in \ argument interpreted as expr [command-args] traits.exp:28:13: expected braced word or word without substitutions in \ argument interpreted as script [command-args] ... Fix these. Tested on aarch64-linux.
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