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| author | Denys Vlasenko | 2020-02-20 10:33:38 +0100 |
|---|---|---|
| committer | Denys Vlasenko | 2020-02-20 10:37:30 +0100 |
| commit | e2dd2afc8e4dbcf1061818adc68d2e74a1fa64d3 (patch) | |
| tree | 9dc1fb145d22ad8c80796bc771e43578b899b507 /shell | |
| parent | 3e729102a86b1fb536f61c6ebcd95321ba98528d (diff) | |
| download | busybox-e2dd2afc8e4dbcf1061818adc68d2e74a1fa64d3.zip busybox-e2dd2afc8e4dbcf1061818adc68d2e74a1fa64d3.tar.gz | |
ash: eval: Always set localvar_stop
Upstream commit:
Date: Thu, 31 May 2018 01:15:34 +0800
eval: Always set localvar_stop
The variable localvar_stop is set iff vlocal is true. gcc doesn't
get this so we get a spurious warning.
This patch fixes this by always calling pushlocalvars with vlocal
and making it only actually do the push if vlocal is non-zero.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'shell')
| -rw-r--r-- | shell/ash.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/shell/ash.c b/shell/ash.c index 5bb10e5..81d2422 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -9722,18 +9722,23 @@ poplocalvars(int keep) * Create a new localvar environment. */ static struct localvar_list * -pushlocalvars(void) +pushlocalvars(int push) { struct localvar_list *ll; + struct localvar_list *top; + + top = localvar_stack; + if (!push) + goto out; INT_OFF; ll = ckzalloc(sizeof(*ll)); /*ll->lv = NULL; - zalloc did it */ - ll->next = localvar_stack; + ll->next = top; localvar_stack = ll; INT_ON; - - return ll->next; + out: + return top; } static void @@ -10217,6 +10222,8 @@ evalcommand(union node *cmd, int flags) vflags = VEXPORT; } + localvar_stop = pushlocalvars(vlocal); + /* Reserve one extra spot at the front for shellexec. */ nargv = stalloc(sizeof(char *) * (argc + 2)); argv = ++nargv; @@ -10245,7 +10252,6 @@ evalcommand(union node *cmd, int flags) status = redirectsafe(cmd->ncmd.redirect, REDIR_PUSH | REDIR_SAVEFD2); if (status) { - vlocal = 0; bail: exitstatus = status; @@ -10256,10 +10262,6 @@ evalcommand(union node *cmd, int flags) goto out; } - localvar_stop = NULL; - if (vlocal) - localvar_stop = pushlocalvars(); - for (argp = cmd->ncmd.assign; argp; argp = argp->narg.next) { struct strlist **spp; @@ -10410,8 +10412,7 @@ evalcommand(union node *cmd, int flags) popredir(/*drop:*/ cmd_is_exec); unwindredir(redir_stop); unwindfiles(file_stop); - if (vlocal) - unwindlocalvars(localvar_stop); + unwindlocalvars(localvar_stop); if (lastarg) { /* dsl: I think this is intended to be used to support * '_' in 'vi' command mode during line editing... |