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nto_process_target::create_inferior: Pass args as char **

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According to [1], the fifth parameter
to the 'spawnp' function is 'char * const argv[]',
so just pass the args contained in the vector as
an array right away, rather than converting that
to a C string first and passing that one.

With commit 2090129c36c7e582943b7d300968d19b46160d84
("Share fork_inferior et al with gdbserver",
2016-12-22) the type had changed from 'char **'
to 'char *', but I can't see an apparent reason for
that, and 'nto_procfs_target::create_inferior'
(in gdb/nto-procfs.c) also passes a 'char **' to
'spawnp' instead.

I do not know much about that target and cannot actually
test this, however.
The main motivation to look at this was identifying
and replacing the remaining uses of the 'stringify_argv'
function which does not properly do escaping.

[1] http://www.qnx.com/developers/docs/7.0.0/#com.qnx.doc.neutrino.lib_ref/topic/s/spawnp.html

gdbserver/ChangeLog:

	* nto-low.cc (nto_process_target::create_inferior): Pass
	argv to spawnp function as char **.

Change-Id: Ic46fe745c2aa1118114240d149d4156032f84344
This commit is contained in:
Michael Weghorn
2020-05-25 11:39:20 -04:00
committed by Simon Marchi
parent b69ca137ac
commit ace6b9195e
2 changed files with 6 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
gdbserver/ChangeLog
View File

@ -1,3 +1,8 @@
2020-05-25 Michael Weghorn <m.weghorn@posteo.de>
* nto-low.cc (nto_process_target::create_inferior): Pass
argv to spawnp function as char **.
2020-05-25 Michael Weghorn <m.weghorn@posteo.de>
* server.cc (captured_main), (handle_v_run): No longer

3
gdbserver/nto-low.cc
View File

@ -357,7 +357,6 @@ nto_process_target::create_inferior (const char *program,
struct inheritance inherit;
pid_t pid;
sigset_t set;
std::string str_program_args = stringify_argv (program_args);
TRACE ("%s %s\n", __func__, program);
/* Clear any pending SIGUSR1's but keep the behavior the same. */
@ -371,7 +370,7 @@ nto_process_target::create_inferior (const char *program,
inherit.flags |= SPAWN_SETGROUP | SPAWN_HOLD;
inherit.pgroup = SPAWN_NEWPGROUP;
pid = spawnp (program, 0, NULL, &inherit,
(char *) str_program_args.c_str (), 0);
program_args.data (), 0);
sigprocmask (SIG_BLOCK, &set, NULL);
if (pid == -1)