From 424e28fcadfe0a40e444687c10fb4eaff8360f8d Mon Sep 17 00:00:00 2001 From: Jeff King Date: Wed, 30 Sep 2020 08:28:32 -0400 Subject: env--helper: write to opt->value in parseopt helper We use OPT_CALLBACK_F() to call the option_parse_type() callback, passing it the address of "cmdmode" as the value to write to. But the callback doesn't look at opt->value at all, and instead writes to a global variable. This works out because that's the same global variable we happen to pass in, but it's rather confusing. Let's use the passed-in value instead. We'll also make "cmdmode" a local variable of the main function, ensuring we can't make the same mistake again. Signed-off-by: Jeff King Signed-off-by: Junio C Hamano --- builtin/env--helper.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) (limited to 'builtin/env--helper.c') diff --git a/builtin/env--helper.c b/builtin/env--helper.c index 23c214fff6..3aa4282114 100644 --- a/builtin/env--helper.c +++ b/builtin/env--helper.c @@ -7,18 +7,20 @@ static char const * const env__helper_usage[] = { NULL }; -static enum { +enum cmdmode { ENV_HELPER_TYPE_BOOL = 1, ENV_HELPER_TYPE_ULONG -} cmdmode = 0; +}; static int option_parse_type(const struct option *opt, const char *arg, int unset) { + enum cmdmode *cmdmode = opt->value; + if (!strcmp(arg, "bool")) - cmdmode = ENV_HELPER_TYPE_BOOL; + *cmdmode = ENV_HELPER_TYPE_BOOL; else if (!strcmp(arg, "ulong")) - cmdmode = ENV_HELPER_TYPE_ULONG; + *cmdmode = ENV_HELPER_TYPE_ULONG; else die(_("unrecognized --type argument, %s"), arg); @@ -33,6 +35,7 @@ int cmd_env__helper(int argc, const char **argv, const char *prefix) int ret; int ret_int, default_int; unsigned long ret_ulong, default_ulong; + enum cmdmode cmdmode = 0; struct option opts[] = { OPT_CALLBACK_F(0, "type", &cmdmode, N_("type"), N_("value is given this type"), PARSE_OPT_NONEG, -- cgit v1.2.3