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The free callback could end up being fired before the done callback

Browse Source 
(happens on Cygwin), so use a reference count instead of a single
flag. SF bug 188 reported by "iceboy".
This commit is contained in:
nicm
2015-04-21 21:31:02 +00:00
parent 0e7219d437
commit d16b640fe8
1 changed files with 8 additions and 7 deletions
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15
cmd-if-shell.c
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@@ -51,7 +51,7 @@ struct cmd_if_shell_data {
struct mouse_event mouse;
int bflag;
int started;
int references;
};
enum cmd_retval
@@ -113,11 +113,11 @@ cmd_if_shell_exec(struct cmd *self, struct cmd_q *cmdq)
cdata->bflag = args_has(args, 'b');
cdata->started = 0;
cdata->cmdq = cmdq;
memcpy(&cdata->mouse, &cmdq->item->mouse, sizeof cdata->mouse);
cmdq->references++;
cdata->references = 1;
job_run(shellcmd, s, cmd_if_shell_callback, cmd_if_shell_free, cdata);
free(shellcmd);
@@ -152,12 +152,11 @@ cmd_if_shell_callback(struct job *job)
return;
}
cdata->started = 1;
cmdq1 = cmdq_new(cmdq->client);
cmdq1->emptyfn = cmd_if_shell_done;
cmdq1->data = cdata;
cdata->references++;
cmdq_run(cmdq1, cmdlist, &cdata->mouse);
cmd_list_free(cmdlist);
}
@@ -170,12 +169,14 @@ cmd_if_shell_done(struct cmd_q *cmdq1)
if (cmdq1->client_exit >= 0)
cmdq->client_exit = cmdq1->client_exit;
cmdq_free(cmdq1);
if (--cdata->references != 0)
return;
if (!cmdq_free(cmdq) && !cdata->bflag)
cmdq_continue(cmdq);
cmdq_free(cmdq1);
free(cdata->cmd_else);
free(cdata->cmd_if);
free(cdata);
@@ -187,7 +188,7 @@ cmd_if_shell_free(void *data)
struct cmd_if_shell_data *cdata = data;
struct cmd_q *cmdq = cdata->cmdq;
if (cdata->started)
if (--cdata->references != 0)
return;
if (!cmdq_free(cmdq) && !cdata->bflag)