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New '--binary-output' command line option, fix gdb.mi/ testing on Windows

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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
This commit is contained in:
Pedro Alves
2025-09-08 20:10:22 +01:00
parent e957baea20
commit 6ac9f56543
6 changed files with 48 additions and 80 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
gdb/NEWS
View File

@@ -86,6 +86,10 @@ single-inf-arg in qSupported
* Debugging Linux programs that use AArch64 Guarded Control Stacks is now
supported.
* New "--binary-output" command line option instructs GDB to set the
translation mode of its stdout/stderr to binary mode. This disables
Line Feed translation. MS-Windows only.
* New commands
maintenance check psymtabs
@@ -97,12 +101,6 @@ maintenance check symtabs
maintenance canonicalize
Show the canonical form of a C++ name.
maintenance set console-translation-mode <binary|text>
maintenance show console-translation-mode
Controls the translation mode of GDB stdout/stderr. MS-Windows only. In
binary mode, no translation is done. In text mode, a Line Feed is
translated into a Carriage Return-Line Feed combination.
set riscv numeric-register-names on|off
show riscv numeric-register-names
Controls whether GDB refers to risc-v registers by their numeric names

27
gdb/doc/gdb.texinfo
View File

@@ -1215,6 +1215,17 @@ Run @value{GDBN} using @var{directory} as its data directory.
The data directory is where @value{GDBN} searches for its
auxiliary files. @xref{Data Files}.
@item -binary-output
@cindex @code{--binary-output}
Instructs @value{GDBN} to set the translation mode of its
@code{stdout}/@code{stderr} to binary. MS-Windows only. Useful for
running the @value{GDBN} testsuite. By default, @value{GDBN} opens
@code{stdout}/@code{stderr} in text mode, and translates @samp{\n}
(LF, a single Line Feed) into @samp{\r\n} (CR-LF, a Carriage
Return-Line Feed combination). If this option is set, no translation
is done.
@item -fullname
@itemx -f
@cindex @code{--fullname}
@@ -42899,22 +42910,6 @@ reports and error and the command is aborted.
@item show watchdog
Show the current setting of the target wait timeout.
@kindex maint set console-translation-mode
@kindex maint show console-translation-mode
@item maint set console-translation-mode @r{[}binary|text@r{]}
@itemx maint show console-translation-mode
Controls the translation mode of @value{GDBN} stdout/stderr. MS-Windows
only. Useful for running the @value{GDBN} testsuite.
The translation mode values are as follows:
@table @code
@item binary
No translation.
@item text
Translate @samp{\n} (LF, a single Line Feed) into @samp{\r\n} (CR-LF, a
Carriage Return-Line Feed combination).
@end table
@end table
@node Remote Protocol

22
gdb/main.c
View File

@@ -59,6 +59,7 @@
#include "serial.h"
#include "cli-out.h"
#include "bt-utils.h"
#include "terminal.h"
/* The selected interpreter. */
std::string interpreter_p;
@@ -783,6 +784,9 @@ captured_main_1 (struct captured_main_args *context)
OPT_READNEVER,
OPT_SET_ESC_ARGS,
OPT_SET_NO_ESC_ARGS,
#ifdef USE_WIN32API
OPT_BINARY_OUTPUT,
#endif
};
/* This struct requires int* in the struct, but write_files is a bool.
So use this temporary int that we write back after argument parsing. */
@@ -859,6 +863,9 @@ captured_main_1 (struct captured_main_args *context)
{"no-escape-args", no_argument, nullptr, OPT_SET_NO_ESC_ARGS},
{"l", required_argument, 0, 'l'},
{"return-child-result", no_argument, &return_child_result, 1},
#ifdef USE_WIN32API
{"binary-output", no_argument, 0, OPT_BINARY_OUTPUT},
#endif
{0, no_argument, 0, 0}
};
@@ -1043,6 +1050,12 @@ captured_main_1 (struct captured_main_args *context)
}
break;
#ifdef USE_WIN32API
case OPT_BINARY_OUTPUT:
set_output_translation_mode_binary ();
break;
#endif
case '?':
error (_("Use `%s --help' for a complete list of options."),
gdb_program_name);
@@ -1482,8 +1495,13 @@ Remote debugging options:\n\n\
Other options:\n\n\
--cd=DIR Change current directory to DIR.\n\
--data-directory=DIR, -D\n\
Set GDB's data-directory to DIR.\n\
"), stream);
Set GDB's data-directory to DIR.\n"
#ifdef USE_WIN32API
"\
--binary-output Set the translation mode of stdout/stderr to binary,\n\
disabling CRLF translation.\n"
#endif
), stream);
gdb_puts (_("\n\
At startup, GDB reads the following early init files and executes their\n\
commands:\n\

61
gdb/mingw-hdep.c
View File

@@ -25,6 +25,7 @@
#include "cli/cli-style.h"
#include "command.h"
#include "cli/cli-cmds.h"
#include "terminal.h"
#include <windows.h>
#include <signal.h>
@@ -448,61 +449,11 @@ install_sigint_handler (c_c_handler_ftype *fn)
return result;
}
/* Set stdout and stderr handles to translation mode MODE. */
/* See terminal.h. */
static void
set_console_translation_mode (int mode)
void
set_output_translation_mode_binary ()
{
setmode (fileno (stdout), mode);
setmode (fileno (stderr), mode);
}
/* Arg in "maint set console-translation-mode <arg>. */
static std::string maint_console_translation_mode;
/* Current value of "maint set/show console-translation-mode". */
static std::string console_translation_mode = "unknown";
/* Sets the console translation mode. */
static void
set_maint_console_translation_mode (const char *args, int from_tty,
struct cmd_list_element *c)
{
if (maint_console_translation_mode == "binary")
set_console_translation_mode (O_BINARY);
else if (maint_console_translation_mode == "text")
set_console_translation_mode (O_TEXT);
else
error (_("Invalid console translation mode: %s"),
maint_console_translation_mode.c_str ());
console_translation_mode = maint_console_translation_mode;
}
/* Shows the console translation mode. */
static void
show_maint_console_translation_mode (struct ui_file *file, int from_tty,
struct cmd_list_element *c,
const char *value)
{
gdb_printf (file, _("Console translation mode is %s.\n"),
console_translation_mode.c_str ());
}
INIT_GDB_FILE (mingw_hdep)
{
add_setshow_string_cmd ("console-translation-mode",
class_maintenance,
&maint_console_translation_mode, _("\
Set the translation mode of stdout/stderr."), _("\
Show the translation mode of stdout/stderr."), _("\
Use \"binary\", or \"text\""),
set_maint_console_translation_mode,
show_maint_console_translation_mode,
&maintenance_set_cmdlist,
&maintenance_show_cmdlist);
setmode (fileno (stdout), O_BINARY);
setmode (fileno (stderr), O_BINARY);
}

6
gdb/terminal.h
View File

@@ -58,4 +58,10 @@ public:
private:
serial_ttystate m_ttystate;
};
#ifdef USE_WIN32API
/* Set translation mode of stdout/stderr to binary. */
extern void set_output_translation_mode_binary ();
#endif
#endif /* GDB_TERMINAL_H */

2
gdb/testsuite/lib/gdb.exp
View File

@@ -276,7 +276,7 @@ if ![info exists INTERNAL_GDBFLAGS] {
append INTERNAL_GDBFLAGS { -iex "set interactive-mode on"}
if { [ishost "*-*-mingw*"] } {
append INTERNAL_GDBFLAGS { -iex "maint set console-translation-mode binary"}
append INTERNAL_GDBFLAGS { --binary-output}
}
}