[PATCH 2/2] parse-options: use and require int pointer for OPT_CMDMODE

[René Scharfe <l.s.r@xxxxxx>]

Some uses of OPT_CMDMODE provide a pointer to an enum.  It is
dereferenced as an int pointer in parse-options.c::get_value().  These
two types are incompatible, though -- the storage size of an enum can
vary between platforms.  C23 would allow us to specify the underlying
type of the different enums, making them compatible, but with C99 the
easiest safe option is to actually use int as the value type.

Convert the offending OPT_CMDMODE users and use the typed value_int
point in the macro's definition to enforce that type for future ones.

Signed-off-by: René Scharfe <l.s.r@xxxxxx>
---
 builtin/am.c         | 2 +-
 builtin/help.c       | 5 +++--
 builtin/ls-tree.c    | 2 +-
 builtin/rebase.c     | 2 +-
 builtin/replace.c    | 3 ++-
 builtin/stripspace.c | 2 +-
 parse-options.h      | 2 +-
 7 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/builtin/am.c b/builtin/am.c
index 202040b62e..ebb72ebaaa 100644
--- a/builtin/am.c
+++ b/builtin/am.c
@@ -2269,7 +2269,7 @@ enum resume_type {
 };

 struct resume_mode {
-	enum resume_type mode;
+	int mode;
 	enum show_patch_type sub_mode;
 };

diff --git a/builtin/help.c b/builtin/help.c
index dc1fbe2b98..e8aedb932c 100644
--- a/builtin/help.c
+++ b/builtin/help.c
@@ -42,7 +42,7 @@ enum show_config_type {
 	SHOW_CONFIG_SECTIONS,
 };

-static enum help_action {
+enum help_action {
 	HELP_ACTION_ALL = 1,
 	HELP_ACTION_GUIDES,
 	HELP_ACTION_CONFIG,
@@ -50,7 +50,8 @@ static enum help_action {
 	HELP_ACTION_DEVELOPER_INTERFACES,
 	HELP_ACTION_CONFIG_FOR_COMPLETION,
 	HELP_ACTION_CONFIG_SECTIONS_FOR_COMPLETION,
-} cmd_mode;
+};
+static int cmd_mode;

 static const char *html_path;
 static int verbose = 1;
diff --git a/builtin/ls-tree.c b/builtin/ls-tree.c
index 209d2dc0d5..6f8c43f729 100644
--- a/builtin/ls-tree.c
+++ b/builtin/ls-tree.c
@@ -346,7 +346,7 @@ int cmd_ls_tree(int argc, const char **argv, const char *prefix)
 	int i, full_tree = 0;
 	int full_name = !prefix || !*prefix;
 	read_tree_fn_t fn = NULL;
-	enum ls_tree_cmdmode cmdmode = MODE_DEFAULT;
+	int cmdmode = MODE_DEFAULT;
 	int null_termination = 0;
 	struct ls_tree_options options = { 0 };
 	const struct option ls_tree_options[] = {
diff --git a/builtin/rebase.c b/builtin/rebase.c
index 50cb85751f..d11e749579 100644
--- a/builtin/rebase.c
+++ b/builtin/rebase.c
@@ -111,7 +111,7 @@ struct rebase_options {
 		REBASE_INTERACTIVE_EXPLICIT = 1<<4,
 	} flags;
 	struct strvec git_am_opts;
-	enum action action;
+	int action;
 	char *reflog_action;
 	int signoff;
 	int allow_rerere_autoupdate;
diff --git a/builtin/replace.c b/builtin/replace.c
index da59600ad2..d0063d3feb 100644
--- a/builtin/replace.c
+++ b/builtin/replace.c
@@ -553,7 +553,8 @@ int cmd_replace(int argc, const char **argv, const char *prefix)
 		MODE_GRAFT,
 		MODE_CONVERT_GRAFT_FILE,
 		MODE_REPLACE
-	} cmdmode = MODE_UNSPECIFIED;
+	};
+	int cmdmode = MODE_UNSPECIFIED;
 	struct option options[] = {
 		OPT_CMDMODE('l', "list", &cmdmode, N_("list replace refs"), MODE_LIST),
 		OPT_CMDMODE('d', "delete", &cmdmode, N_("delete replace refs"), MODE_DELETE),
diff --git a/builtin/stripspace.c b/builtin/stripspace.c
index 7b700a9fb1..f6de0b17dc 100644
--- a/builtin/stripspace.c
+++ b/builtin/stripspace.c
@@ -32,7 +32,7 @@ enum stripspace_mode {
 int cmd_stripspace(int argc, const char **argv, const char *prefix)
 {
 	struct strbuf buf = STRBUF_INIT;
-	enum stripspace_mode mode = STRIP_DEFAULT;
+	int mode = STRIP_DEFAULT;
 	int nongit;

 	const struct option options[] = {
diff --git a/parse-options.h b/parse-options.h
index 5e7475bd2d..349c3fca04 100644
--- a/parse-options.h
+++ b/parse-options.h
@@ -262,7 +262,7 @@ struct option {
 	.type = OPTION_SET_INT, \
 	.short_name = (s), \
 	.long_name = (l), \
-	.value = (v), \
+	.value_int = (v), \
 	.help = (h), \
 	.flags = PARSE_OPT_CMDMODE|PARSE_OPT_NOARG|PARSE_OPT_NONEG | (f), \
 	.defval = (i), \
--
2.42.0