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ash: comment out free(p) just before _exit, tweak some outdated comments

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Planned to sync exitshell up to dash, turned out ours is better :)

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2016-10-07 03:17:28 +02:00
parent 2972e2c4ac
commit f37e1155aa
1 changed files with 5 additions and 16 deletions
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21
shell/ash.c
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@ -474,7 +474,7 @@ raise_exception(int e)
#endif
/*
* Called from trap.c when a SIGINT is received. (If the user specifies
* Called when a SIGINT is received. (If the user specifies
* that SIGINT is to be trapped or ignored using the trap builtin, then
* this routine is not called.) Suppressint is nonzero when interrupts
* are held using the INT_OFF macro. (The test for iflag is just
@ -3357,8 +3357,6 @@ unaliascmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
#endif /* ASH_ALIAS */
/* ============ jobs.c */
/* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */
#define FORK_FG 0
#define FORK_BG 1
@ -8161,8 +8159,6 @@ commandcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
#endif
/* ============ eval.c */
static int funcblocksize; /* size of structures in function */
static int funcstringsize; /* size of strings in node */
static void *funcblock; /* block to allocate function from */
@ -12745,8 +12741,6 @@ find_command(char *name, struct cmdentry *entry, int act, const char *path)
}
/* ============ trap.c */
/*
* The trap builtin.
*/
@ -13172,15 +13166,10 @@ exitshell(void)
#if ENABLE_FEATURE_EDITING_SAVE_ON_EXIT
save_history(line_input_state);
#endif
status = exitstatus;
TRACE(("pid %d, exitshell(%d)\n", getpid(), status));
if (setjmp(loc.loc)) {
if (exception_type == EXEXIT)
/* dash bug: it just does _exit(exitstatus) here
* but we have to do setjobctl(0) first!
* (bug is still not fixed in dash-0.5.3 - if you run dash
* under Midnight Commander, on exit from dash MC is backgrounded) */
status = exitstatus;
goto out;
}
@ -13190,10 +13179,13 @@ exitshell(void)
trap[0] = NULL;
evalskip = 0;
evalstring(p, 0);
free(p);
/*free(p); - we'll exit soon */
}
flush_stdout_stderr();
out:
/* dash wraps setjobctl(0) in "if (setjmp(loc.loc) == 0) {...}".
* our setjobctl(0) does not panic if tcsetpgrp fails inside it.
*/
setjobctl(0);
_exit(status);
/* NOTREACHED */
@ -13202,18 +13194,15 @@ exitshell(void)
static void
init(void)
{
/* from input.c: */
/* we will never free this */
basepf.next_to_pgetc = basepf.buf = ckmalloc(IBUFSIZ);
/* from trap.c: */
signal(SIGCHLD, SIG_DFL);
/* bash re-enables SIGHUP which is SIG_IGNed on entry.
* Try: "trap '' HUP; bash; echo RET" and type "kill -HUP $$"
*/
signal(SIGHUP, SIG_DFL);
/* from var.c: */
{
char **envp;
const char *p;