From: Michael Weghorn <m.weghorn@posteo.de>
To: gdb-patches@sourceware.org
Cc: Michael Weghorn <m.weghorn@posteo.de>
Subject: [PATCH v4 2/9] gdbsupport: Adapt construct_inferior_arguments
Date: Wed, 13 May 2020 11:47:51 +0200 [thread overview]
Message-ID: <20200513094758.523845-2-m.weghorn@posteo.de> (raw)
In-Reply-To: <20200513094758.523845-1-m.weghorn@posteo.de>
Allow construct_inferior_arguments to handle zero args
and have it return a std::string, similar to how
stringify_argv in gdbsupport/common-utils does.
Also, add a const qualifier for the second parameter,
since it is only read, not written to.
The intention is to replace existing uses of
stringify_argv by construct_inferior_arguments
in a subsequent step, since construct_inferior_arguments
properly handles special characters, while stringify_argv
doesn't.
2020-05-13 Michael Weghorn <m.weghorn@posteo.de>
* common-inferior.cc, common-inferior.h (construct_inferior_arguments):
Adapt to handle zero args and return a std::string.
Adapt call site.
---
gdb/infcmd.c | 9 ++---
gdbsupport/common-inferior.cc | 65 ++++++++++++-----------------------
gdbsupport/common-inferior.h | 2 +-
3 files changed, 26 insertions(+), 50 deletions(-)
diff --git a/gdb/infcmd.c b/gdb/infcmd.c
index 8f7482347c..a7c037837c 100644
--- a/gdb/infcmd.c
+++ b/gdb/infcmd.c
@@ -151,12 +151,9 @@ get_inferior_args (void)
{
if (current_inferior ()->argc != 0)
{
- char *n;
-
- n = construct_inferior_arguments (current_inferior ()->argc,
- current_inferior ()->argv);
- set_inferior_args (n);
- xfree (n);
+ std::string n = construct_inferior_arguments (current_inferior ()->argc,
+ current_inferior ()->argv);
+ set_inferior_args (n.c_str ());
}
if (current_inferior ()->args == NULL)
diff --git a/gdbsupport/common-inferior.cc b/gdbsupport/common-inferior.cc
index a7d631f357..aa8be14c74 100644
--- a/gdbsupport/common-inferior.cc
+++ b/gdbsupport/common-inferior.cc
@@ -27,15 +27,12 @@ bool startup_with_shell = true;
/* See common-inferior.h. */
-char *
-construct_inferior_arguments (int argc, char **argv)
+std::string
+construct_inferior_arguments (int argc, char * const *argv)
{
- char *result;
+ gdb_assert (argc >= 0);
- /* ARGC should always be at least 1, but we double check this
- here. This is also needed to silence -Werror-stringop
- warnings. */
- gdb_assert (argc > 0);
+ std::string result;
if (startup_with_shell)
{
@@ -51,49 +48,38 @@ construct_inferior_arguments (int argc, char **argv)
static const char special[] = "\"!#$&*()\\|[]{}<>?'`~^; \t\n";
static const char quote = '\'';
#endif
- int i;
- int length = 0;
- char *out, *cp;
-
- /* We over-compute the size. It shouldn't matter. */
- for (i = 0; i < argc; ++i)
- length += 3 * strlen (argv[i]) + 1 + 2 * (argv[i][0] == '\0');
-
- result = (char *) xmalloc (length);
- out = result;
-
- for (i = 0; i < argc; ++i)
+ for (int i = 0; i < argc; ++i)
{
if (i > 0)
- *out++ = ' ';
+ result += ' ';
/* Need to handle empty arguments specially. */
if (argv[i][0] == '\0')
{
- *out++ = quote;
- *out++ = quote;
+ result += quote;
+ result += quote;
}
else
{
#ifdef __MINGW32__
- int quoted = 0;
+ bool quoted = false;
if (strpbrk (argv[i], special))
{
- quoted = 1;
- *out++ = quote;
+ quoted = true;
+ result += quote;
}
#endif
- for (cp = argv[i]; *cp; ++cp)
+ for (char *cp = argv[i]; *cp; ++cp)
{
if (*cp == '\n')
{
/* A newline cannot be quoted with a backslash (it
just disappears), only by putting it inside
quotes. */
- *out++ = quote;
- *out++ = '\n';
- *out++ = quote;
+ result += quote;
+ result += '\n';
+ result += quote;
}
else
{
@@ -102,26 +88,22 @@ construct_inferior_arguments (int argc, char **argv)
#else
if (strchr (special, *cp) != NULL)
#endif
- *out++ = '\\';
- *out++ = *cp;
+ result += '\\';
+ result += *cp;
}
}
#ifdef __MINGW32__
if (quoted)
- *out++ = quote;
+ result += quote;
#endif
}
}
- *out = '\0';
}
else
{
/* In this case we can't handle arguments that contain spaces,
tabs, or newlines -- see breakup_args(). */
- int i;
- int length = 0;
-
- for (i = 0; i < argc; ++i)
+ for (int i = 0; i < argc; ++i)
{
char *cp = strchr (argv[i], ' ');
if (cp == NULL)
@@ -131,16 +113,13 @@ construct_inferior_arguments (int argc, char **argv)
if (cp != NULL)
error (_("can't handle command-line "
"argument containing whitespace"));
- length += strlen (argv[i]) + 1;
}
- result = (char *) xmalloc (length);
- result[0] = '\0';
- for (i = 0; i < argc; ++i)
+ for (int i = 0; i < argc; ++i)
{
if (i > 0)
- strcat (result, " ");
- strcat (result, argv[i]);
+ result += " ";
+ result += argv[i];
}
}
diff --git a/gdbsupport/common-inferior.h b/gdbsupport/common-inferior.h
index ee87bc75a3..5e9fc8b0b9 100644
--- a/gdbsupport/common-inferior.h
+++ b/gdbsupport/common-inferior.h
@@ -60,6 +60,6 @@ extern bool startup_with_shell;
/* Compute command-line string given argument vector. This does the
same shell processing as fork_inferior. */
-extern char *construct_inferior_arguments (int, char **);
+extern std::string construct_inferior_arguments (int, char * const *);
#endif /* COMMON_COMMON_INFERIOR_H */
--
2.26.2
next prev parent reply other threads:[~2020-05-13 9:48 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-29 11:16 Patches for PR 25893 "gdbserver incorrectly handles program args containing space" Michael Weghorn
2020-04-29 11:16 ` [PATCH 0/4] gdb: Move construct_inferior_arguments to gdbsupport Michael Weghorn
2020-05-07 19:31 ` Simon Marchi
2020-05-12 15:50 ` Michael Weghorn
2020-04-29 11:16 ` [PATCH 1/4] gdbsupport: Extend construct_inferior_arguments to allow handling all stringify_args cases Michael Weghorn
2020-04-29 15:25 ` Christian Biesinger
2020-04-29 15:45 ` Christian Biesinger
2020-05-07 19:29 ` Simon Marchi
2020-05-12 15:48 ` Michael Weghorn
2020-05-12 16:11 ` Simon Marchi
2020-05-12 16:24 ` Michael Weghorn
2020-04-30 6:02 ` [PATCH v2 " Michael Weghorn
2020-05-07 19:49 ` Simon Marchi
2020-05-12 15:57 ` Michael Weghorn
2020-04-29 11:16 ` [PATCH 2/4] gdbserver: Don't add extra NULL to program args Michael Weghorn
2020-05-07 19:54 ` Simon Marchi
2020-05-12 16:00 ` Michael Weghorn
2020-04-29 11:16 ` [PATCH 3/4] [PR gdbserver/25893]: Use construct_inferior_arguments which handles special chars Michael Weghorn
2020-05-07 20:09 ` Simon Marchi
2020-05-07 22:09 ` Simon Marchi
2020-05-12 16:10 ` Michael Weghorn
2020-05-12 16:07 ` Michael Weghorn
2020-05-12 17:37 ` Simon Marchi
2020-05-13 1:59 ` Simon Marchi
2020-05-13 9:51 ` Michael Weghorn
2020-04-29 11:16 ` [PATCH 4/4] [PR gdbserver/25893]: Add gdbserver test for argument with space in it Michael Weghorn
2020-05-07 22:15 ` Simon Marchi
2020-05-10 15:59 ` [PATCH 1/2] gdb/testsuite: support passing inferior arguments with native-gdbserver board Simon Marchi
2020-05-10 15:59 ` [PATCH 2/2] gdb/testsuite: add inferior arguments test Simon Marchi
2020-05-15 20:07 ` Pedro Alves
2020-05-19 17:13 ` Simon Marchi
2020-05-20 16:28 ` Michael Weghorn
2020-05-15 20:07 ` [PATCH 1/2] gdb/testsuite: support passing inferior arguments with native-gdbserver board Pedro Alves
2020-05-10 16:09 ` [PATCH 4/4] [PR gdbserver/25893]: Add gdbserver test for argument with space in it Simon Marchi
2020-05-11 14:33 ` Michael Weghorn
2020-05-11 15:04 ` Simon Marchi
2020-05-12 16:20 ` Michael Weghorn
2020-05-12 16:50 ` Simon Marchi
2020-05-13 9:55 ` Michael Weghorn
2020-04-29 15:27 ` Patches for PR 25893 "gdbserver incorrectly handles program args containing space" Simon Marchi
2020-04-30 6:03 ` Michael Weghorn
2020-05-12 15:42 ` [PATCH v3 1/6] gdb: Move construct_inferior_arguments to gdbsupport Michael Weghorn
2020-05-12 15:42 ` [PATCH v3 2/6] gdbsupport: Adapt construct_inferior_arguments Michael Weghorn
2020-05-12 17:53 ` Simon Marchi
2020-05-13 9:56 ` Michael Weghorn
2020-05-12 15:42 ` [PATCH v3 3/6] gdbserver: Don't add extra NULL to program args Michael Weghorn
2020-05-12 15:42 ` [PATCH v3 4/6] nto_process_target::create_inferior: Pass args as char ** Michael Weghorn
2020-05-12 18:34 ` Simon Marchi
2020-05-13 9:56 ` Michael Weghorn
2020-05-12 15:42 ` [PATCH v3 5/6] [PR gdbserver/25893]: Use construct_inferior_arguments which handles special chars Michael Weghorn
2020-05-13 0:52 ` Simon Marchi
2020-05-13 0:54 ` Simon Marchi
2020-05-13 9:58 ` Michael Weghorn
2020-05-12 15:42 ` [PATCH v3 6/6] gdbsupport: Drop now unused function 'stringify_argv' Michael Weghorn
2020-05-13 0:52 ` Simon Marchi
2020-05-13 9:47 ` [PATCH v4 1/9] gdb: Move construct_inferior_arguments to gdbsupport Michael Weghorn
2020-05-13 9:47 ` Michael Weghorn [this message]
2020-05-13 9:47 ` [PATCH v4 3/9] gdbsupport: Let construct_inferior_arguments take gdb::array_view param Michael Weghorn
2020-05-13 9:47 ` [PATCH v4 4/9] gdbserver: Don't add extra NULL to program args Michael Weghorn
2020-05-13 9:47 ` [PATCH v4 5/9] nto_process_target::create_inferior: Pass args as char ** Michael Weghorn
2020-05-13 9:47 ` [PATCH v4 6/9] [PR gdbserver/25893]: Use construct_inferior_arguments which handles special chars Michael Weghorn
2020-05-13 9:47 ` [PATCH v4 7/9] gdbsupport: Drop now unused function 'stringify_argv' Michael Weghorn
2020-05-13 9:47 ` [PATCH v4 8/9] gdb/testsuite: support passing inferior arguments with native-gdbserver board Michael Weghorn
2020-05-15 17:29 ` Tom de Vries
2020-05-19 17:11 ` Simon Marchi
2020-05-19 17:22 ` Simon Marchi
2020-05-19 18:46 ` Tom de Vries
2020-05-25 15:14 ` Simon Marchi
2020-05-13 9:47 ` [PATCH v4 9/9] gdb/testsuite: add inferior arguments test Michael Weghorn
2020-05-13 14:39 ` [PATCH v4 1/9] gdb: Move construct_inferior_arguments to gdbsupport Simon Marchi
2020-05-13 15:01 ` Michael Weghorn
2020-05-13 15:05 ` Simon Marchi
2020-05-20 16:37 ` Michael Weghorn
2020-05-20 16:40 ` Simon Marchi
2020-05-20 16:21 ` [PATCH v5 " Michael Weghorn
2020-05-20 16:21 ` [PATCH v5 2/9] gdbsupport: Adapt construct_inferior_arguments Michael Weghorn
2020-05-20 16:21 ` [PATCH v5 3/9] gdbsupport: Let construct_inferior_arguments take gdb::array_view param Michael Weghorn
2020-05-20 16:21 ` [PATCH v5 4/9] gdbserver: Don't add extra NULL to program args Michael Weghorn
2020-05-20 16:21 ` [PATCH v5 5/9] nto_process_target::create_inferior: Pass args as char ** Michael Weghorn
2020-05-20 16:21 ` [PATCH v5 6/9] [PR gdbserver/25893]: Use construct_inferior_arguments which handles special chars Michael Weghorn
2020-05-20 16:21 ` [PATCH v5 7/9] gdbsupport: Drop now unused function 'stringify_argv' Michael Weghorn
2020-05-20 16:21 ` [PATCH v5 8/9] gdb/testsuite: support passing inferior arguments with native-gdbserver board Michael Weghorn
2020-05-20 16:21 ` [PATCH v5 9/9] gdb/testsuite: add inferior arguments test Michael Weghorn
2020-05-25 15:42 ` [PATCH v5 1/9] gdb: Move construct_inferior_arguments to gdbsupport Simon Marchi
2020-05-26 6:17 ` Michael Weghorn
2021-09-28 14:33 ` Simon Marchi
2021-09-29 5:53 ` Michael Weghorn
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