qapi: Don't let implicit enum MAX member collide

Now that we guarantee the user doesn't have any enum values
beginning with a single underscore, we can use that for our
own purposes.  Renaming ENUM_MAX to ENUM__MAX makes it obvious
that the sentinel is generated.

This patch was mostly generated by applying a temporary patch:

|diff --git a/scripts/qapi.py b/scripts/qapi.py
|index e6d014b..b862ec9 100644
|--- a/scripts/qapi.py
|+++ b/scripts/qapi.py
|@@ -1570,6 +1570,7 @@ const char *const %(c_name)s_lookup[] = {
|     max_index = c_enum_const(name, 'MAX', prefix)
|     ret += mcgen('''
|     [%(max_index)s] = NULL,
|+// %(max_index)s
| };
| ''',
|                max_index=max_index)

then running:

$ cat qapi-{types,event}.c tests/test-qapi-types.c |
    sed -n 's,^// \(.*\)MAX,s|\1MAX|\1_MAX|g,p' > list
$ git grep -l _MAX | xargs sed -i -f list

The only things not generated are the changes in scripts/qapi.py.

Rejecting enum members named 'MAX' is now useless, and will be dropped
in the next patch.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1447836791-369-23-git-send-email-eblake@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
[Rebased to current master, commit message tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>

block/blkdebug.c

@@ -36,7 +36,7 @@ typedef struct BDRVBlkdebugState {
     int state;
     int new_state;
 
-    QLIST_HEAD(, BlkdebugRule) rules[BLKDBG_MAX];
+    QLIST_HEAD(, BlkdebugRule) rules[BLKDBG__MAX];
     QSIMPLEQ_HEAD(, BlkdebugRule) active_rules;
     QLIST_HEAD(, BlkdebugSuspendedReq) suspended_reqs;
 } BDRVBlkdebugState;
@@ -147,7 +147,7 @@ static int get_event_by_name(const char *name, BlkdebugEvent *event)
 {
     int i;
 
-    for (i = 0; i < BLKDBG_MAX; i++) {
+    for (i = 0; i < BLKDBG__MAX; i++) {
         if (!strcmp(BlkdebugEvent_lookup[i], name)) {
             *event = i;
             return 0;
@@ -507,7 +507,7 @@ static void blkdebug_close(BlockDriverState *bs)
     BlkdebugRule *rule, *next;
     int i;
 
-    for (i = 0; i < BLKDBG_MAX; i++) {
+    for (i = 0; i < BLKDBG__MAX; i++) {
         QLIST_FOREACH_SAFE(rule, &s->rules[i], next, next) {
             remove_rule(rule);
         }
@@ -576,7 +576,7 @@ static void blkdebug_debug_event(BlockDriverState *bs, BlkdebugEvent event)
     struct BlkdebugRule *rule, *next;
     bool injected;
 
-    assert((int)event >= 0 && event < BLKDBG_MAX);
+    assert((int)event >= 0 && event < BLKDBG__MAX);
 
     injected = false;
     s->new_state = s->state;
@@ -633,7 +633,7 @@ static int blkdebug_debug_remove_breakpoint(BlockDriverState *bs,
     BlkdebugRule *rule, *next;
     int i, ret = -ENOENT;
 
-    for (i = 0; i < BLKDBG_MAX; i++) {
+    for (i = 0; i < BLKDBG__MAX; i++) {
         QLIST_FOREACH_SAFE(rule, &s->rules[i], next, next) {
             if (rule->action == ACTION_SUSPEND &&
                 !strcmp(rule->options.suspend.tag, tag)) {

block/parallels.c

@@ -61,7 +61,7 @@ typedef struct ParallelsHeader {
 typedef enum ParallelsPreallocMode {
     PRL_PREALLOC_MODE_FALLOCATE = 0,
     PRL_PREALLOC_MODE_TRUNCATE = 1,
-    PRL_PREALLOC_MODE_MAX = 2,
+    PRL_PREALLOC_MODE__MAX = 2,
 } ParallelsPreallocMode;
 
 static const char *prealloc_mode_lookup[] = {
@@ -660,7 +660,7 @@ static int parallels_open(BlockDriverState *bs, QDict *options, int flags,
     s->prealloc_size = MAX(s->tracks, s->prealloc_size >> BDRV_SECTOR_BITS);
     buf = qemu_opt_get_del(opts, PARALLELS_OPT_PREALLOC_MODE);
     s->prealloc_mode = qapi_enum_parse(prealloc_mode_lookup, buf,
-            PRL_PREALLOC_MODE_MAX, PRL_PREALLOC_MODE_FALLOCATE, &local_err);
+            PRL_PREALLOC_MODE__MAX, PRL_PREALLOC_MODE_FALLOCATE, &local_err);
     g_free(buf);
     if (local_err != NULL) {
         goto fail_options;

block/qcow2.c

@@ -2269,7 +2269,7 @@ static int qcow2_create(const char *filename, QemuOpts *opts, Error **errp)
                                          DEFAULT_CLUSTER_SIZE);
     buf = qemu_opt_get_del(opts, BLOCK_OPT_PREALLOC);
     prealloc = qapi_enum_parse(PreallocMode_lookup, buf,
-                               PREALLOC_MODE_MAX, PREALLOC_MODE_OFF,
+                               PREALLOC_MODE__MAX, PREALLOC_MODE_OFF,
                                &local_err);
     if (local_err) {
         error_propagate(errp, local_err);

block/quorum.c

@@ -847,7 +847,7 @@ static int parse_read_pattern(const char *opt)
         return QUORUM_READ_PATTERN_QUORUM;
     }
 
-    for (i = 0; i < QUORUM_READ_PATTERN_MAX; i++) {
+    for (i = 0; i < QUORUM_READ_PATTERN__MAX; i++) {
         if (!strcmp(opt, QuorumReadPattern_lookup[i])) {
             return i;
         }

block/raw-posix.c

@@ -1636,7 +1636,7 @@ static int raw_create(const char *filename, QemuOpts *opts, Error **errp)
     nocow = qemu_opt_get_bool(opts, BLOCK_OPT_NOCOW, false);
     buf = qemu_opt_get_del(opts, BLOCK_OPT_PREALLOC);
     prealloc = qapi_enum_parse(PreallocMode_lookup, buf,
-                               PREALLOC_MODE_MAX, PREALLOC_MODE_OFF,
+                               PREALLOC_MODE__MAX, PREALLOC_MODE_OFF,
                                &local_err);
     g_free(buf);
     if (local_err) {

blockdev.c

@@ -454,7 +454,7 @@ static void extract_common_blockdev_options(QemuOpts *opts, int *bdrv_flags,
         *detect_zeroes =
             qapi_enum_parse(BlockdevDetectZeroesOptions_lookup,
                             qemu_opt_get(opts, "detect-zeroes"),
-                            BLOCKDEV_DETECT_ZEROES_OPTIONS_MAX,
+                            BLOCKDEV_DETECT_ZEROES_OPTIONS__MAX,
                             BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF,
                             &local_error);
         if (local_error) {

docs/qapi-code-gen.txt

@@ -1053,7 +1053,7 @@ Example:
 
     const char *const example_QAPIEvent_lookup[] = {
         [EXAMPLE_QAPI_EVENT_MY_EVENT] = "MY_EVENT",
-        [EXAMPLE_QAPI_EVENT_MAX] = NULL,
+        [EXAMPLE_QAPI_EVENT__MAX] = NULL,
     };
     $ cat qapi-generated/example-qapi-event.h
 [Uninteresting stuff omitted...]
@@ -1070,7 +1070,7 @@ Example:
 
     typedef enum example_QAPIEvent {
         EXAMPLE_QAPI_EVENT_MY_EVENT = 0,
-        EXAMPLE_QAPI_EVENT_MAX = 1,
+        EXAMPLE_QAPI_EVENT__MAX = 1,
     } example_QAPIEvent;
 
     extern const char *const example_QAPIEvent_lookup[];

hmp.c

@@ -855,7 +855,7 @@ void hmp_info_tpm(Monitor *mon, const QDict *qdict)
                            tpo->has_cancel_path ? ",cancel-path=" : "",
                            tpo->has_cancel_path ? tpo->cancel_path : "");
             break;
-        case TPM_TYPE_OPTIONS_KIND_MAX:
+        case TPM_TYPE_OPTIONS_KIND__MAX:
             break;
         }
         monitor_printf(mon, "\n");
@@ -1203,7 +1203,7 @@ void hmp_migrate_set_capability(Monitor *mon, const QDict *qdict)
     MigrationCapabilityStatusList *caps = g_malloc0(sizeof(*caps));
     int i;
 
-    for (i = 0; i < MIGRATION_CAPABILITY_MAX; i++) {
+    for (i = 0; i < MIGRATION_CAPABILITY__MAX; i++) {
         if (strcmp(cap, MigrationCapability_lookup[i]) == 0) {
             caps->value = g_malloc0(sizeof(*caps->value));
             caps->value->capability = i;
@@ -1214,7 +1214,7 @@ void hmp_migrate_set_capability(Monitor *mon, const QDict *qdict)
         }
     }
 
-    if (i == MIGRATION_CAPABILITY_MAX) {
+    if (i == MIGRATION_CAPABILITY__MAX) {
         error_setg(&err, QERR_INVALID_PARAMETER, cap);
     }
 
@@ -1239,7 +1239,7 @@ void hmp_migrate_set_parameter(Monitor *mon, const QDict *qdict)
     bool has_x_cpu_throttle_increment = false;
     int i;
 
-    for (i = 0; i < MIGRATION_PARAMETER_MAX; i++) {
+    for (i = 0; i < MIGRATION_PARAMETER__MAX; i++) {
         if (strcmp(param, MigrationParameter_lookup[i]) == 0) {
             switch (i) {
             case MIGRATION_PARAMETER_COMPRESS_LEVEL:
@@ -1268,7 +1268,7 @@ void hmp_migrate_set_parameter(Monitor *mon, const QDict *qdict)
         }
     }
 
-    if (i == MIGRATION_PARAMETER_MAX) {
+    if (i == MIGRATION_PARAMETER__MAX) {
         error_setg(&err, QERR_INVALID_PARAMETER, param);
     }
 
@@ -1368,7 +1368,7 @@ void hmp_change(Monitor *mon, const QDict *qdict)
         if (read_only) {
             read_only_mode =
                 qapi_enum_parse(BlockdevChangeReadOnlyMode_lookup,
-                                read_only, BLOCKDEV_CHANGE_READ_ONLY_MODE_MAX,
+                                read_only, BLOCKDEV_CHANGE_READ_ONLY_MODE__MAX,
                                 BLOCKDEV_CHANGE_READ_ONLY_MODE_RETAIN, &err);
             if (err) {
                 hmp_handle_error(mon, &err);
@@ -1771,7 +1771,7 @@ void hmp_sendkey(Monitor *mon, const QDict *qdict)
             keylist->value->u.number = value;
         } else {
             int idx = index_from_key(keyname_buf);
-            if (idx == Q_KEY_CODE_MAX) {
+            if (idx == Q_KEY_CODE__MAX) {
                 goto err_out;
             }
             keylist->value->type = KEY_VALUE_KIND_QCODE;

hw/char/escc.c

@@ -714,7 +714,7 @@ MemoryRegion *escc_init(hwaddr base, qemu_irq irqA, qemu_irq irqB,
     return &d->mmio;
 }
 
-static const uint8_t qcode_to_keycode[Q_KEY_CODE_MAX] = {
+static const uint8_t qcode_to_keycode[Q_KEY_CODE__MAX] = {
     [Q_KEY_CODE_SHIFT]         = 99,
     [Q_KEY_CODE_SHIFT_R]       = 110,
     [Q_KEY_CODE_ALT]           = 19,

hw/i386/pc_piix.c

@@ -225,7 +225,7 @@ static void pc_init1(MachineState *machine,
 
     pc_vga_init(isa_bus, pci_enabled ? pci_bus : NULL);
 
-    assert(pcms->vmport != ON_OFF_AUTO_MAX);
+    assert(pcms->vmport != ON_OFF_AUTO__MAX);
     if (pcms->vmport == ON_OFF_AUTO_AUTO) {
         pcms->vmport = xen_enabled() ? ON_OFF_AUTO_OFF : ON_OFF_AUTO_ON;
     }

hw/i386/pc_q35.c

@@ -233,7 +233,7 @@ static void pc_q35_init(MachineState *machine)
 
     pc_register_ferr_irq(gsi[13]);
 
-    assert(pcms->vmport != ON_OFF_AUTO_MAX);
+    assert(pcms->vmport != ON_OFF_AUTO__MAX);
     if (pcms->vmport == ON_OFF_AUTO_AUTO) {
         pcms->vmport = xen_enabled() ? ON_OFF_AUTO_OFF : ON_OFF_AUTO_ON;
     }

hw/input/hid.c

@@ -108,7 +108,7 @@ void hid_set_next_idle(HIDState *hs)
 static void hid_pointer_event(DeviceState *dev, QemuConsole *src,
                               InputEvent *evt)
 {
-    static const int bmap[INPUT_BUTTON_MAX] = {
+    static const int bmap[INPUT_BUTTON__MAX] = {
         [INPUT_BUTTON_LEFT]   = 0x01,
         [INPUT_BUTTON_RIGHT]  = 0x02,
         [INPUT_BUTTON_MIDDLE] = 0x04,

hw/input/ps2.c

@@ -382,7 +382,7 @@ static void ps2_mouse_send_packet(PS2MouseState *s)
 static void ps2_mouse_event(DeviceState *dev, QemuConsole *src,
                             InputEvent *evt)
 {
-    static const int bmap[INPUT_BUTTON_MAX] = {
+    static const int bmap[INPUT_BUTTON__MAX] = {
         [INPUT_BUTTON_LEFT]   = MOUSE_EVENT_LBUTTON,
         [INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON,
         [INPUT_BUTTON_RIGHT]  = MOUSE_EVENT_RBUTTON,

hw/input/virtio-input-hid.c

@@ -21,7 +21,7 @@
 
 /* ----------------------------------------------------------------- */
 
-static const unsigned int keymap_qcode[Q_KEY_CODE_MAX] = {
+static const unsigned int keymap_qcode[Q_KEY_CODE__MAX] = {
     [Q_KEY_CODE_ESC]                 = KEY_ESC,
     [Q_KEY_CODE_1]                   = KEY_1,
     [Q_KEY_CODE_2]                   = KEY_2,
@@ -138,7 +138,7 @@ static const unsigned int keymap_qcode[Q_KEY_CODE_MAX] = {
     [Q_KEY_CODE_MENU]                = KEY_MENU,
 };
 
-static const unsigned int keymap_button[INPUT_BUTTON_MAX] = {
+static const unsigned int keymap_button[INPUT_BUTTON__MAX] = {
     [INPUT_BUTTON_LEFT]              = BTN_LEFT,
     [INPUT_BUTTON_RIGHT]             = BTN_RIGHT,
     [INPUT_BUTTON_MIDDLE]            = BTN_MIDDLE,
@@ -146,12 +146,12 @@ static const unsigned int keymap_button[INPUT_BUTTON_MAX] = {
     [INPUT_BUTTON_WHEEL_DOWN]        = BTN_GEAR_DOWN,
 };
 
-static const unsigned int axismap_rel[INPUT_AXIS_MAX] = {
+static const unsigned int axismap_rel[INPUT_AXIS__MAX] = {
     [INPUT_AXIS_X]                   = REL_X,
     [INPUT_AXIS_Y]                   = REL_Y,
 };
 
-static const unsigned int axismap_abs[INPUT_AXIS_MAX] = {
+static const unsigned int axismap_abs[INPUT_AXIS__MAX] = {
     [INPUT_AXIS_X]                   = ABS_X,
     [INPUT_AXIS_Y]                   = ABS_Y,
 };

include/migration/migration.h

@@ -133,7 +133,7 @@ struct MigrationState
     QemuThread thread;
     QEMUBH *cleanup_bh;
     QEMUFile *file;
-    int parameters[MIGRATION_PARAMETER_MAX];
+    int parameters[MIGRATION_PARAMETER__MAX];
 
     int state;
     MigrationParams params;
@@ -151,7 +151,7 @@ struct MigrationState
     int64_t expected_downtime;
     int64_t dirty_pages_rate;
     int64_t dirty_bytes_rate;
-    bool enabled_capabilities[MIGRATION_CAPABILITY_MAX];
+    bool enabled_capabilities[MIGRATION_CAPABILITY__MAX];
     int64_t xbzrle_cache_size;
     int64_t setup_time;
     int64_t dirty_sync_count;

migration/migration.c

@@ -202,7 +202,7 @@ static int global_state_post_load(void *opaque, int version_id)
     s->received = true;
     trace_migrate_global_state_post_load(runstate);
 
-    r = qapi_enum_parse(RunState_lookup, runstate, RUN_STATE_MAX,
+    r = qapi_enum_parse(RunState_lookup, runstate, RUN_STATE__MAX,
                                 -1, &local_err);
 
     if (r == -1) {
@@ -479,7 +479,7 @@ MigrationCapabilityStatusList *qmp_query_migrate_capabilities(Error **errp)
     int i;
 
     caps = NULL; /* silence compiler warning */
-    for (i = 0; i < MIGRATION_CAPABILITY_MAX; i++) {
+    for (i = 0; i < MIGRATION_CAPABILITY__MAX; i++) {
         if (head == NULL) {
             head = g_malloc0(sizeof(*caps));
             caps = head;

monitor.c

@@ -441,7 +441,7 @@ static void monitor_protocol_emitter(Monitor *mon, QObject *data,
 }
 
 
-static MonitorQAPIEventConf monitor_qapi_event_conf[QAPI_EVENT_MAX] = {
+static MonitorQAPIEventConf monitor_qapi_event_conf[QAPI_EVENT__MAX] = {
     /* Limit guest-triggerable events to 1 per second */
     [QAPI_EVENT_RTC_CHANGE]        = { 1000 * SCALE_MS },
     [QAPI_EVENT_WATCHDOG]          = { 1000 * SCALE_MS },
@@ -481,7 +481,7 @@ monitor_qapi_event_queue(QAPIEvent event, QDict *qdict, Error **errp)
     MonitorQAPIEventConf *evconf;
     MonitorQAPIEventState *evstate;
 
-    assert(event < QAPI_EVENT_MAX);
+    assert(event < QAPI_EVENT__MAX);
     evconf = &monitor_qapi_event_conf[event];
     trace_monitor_protocol_event_queue(event, qdict, evconf->rate);
 
@@ -946,7 +946,7 @@ EventInfoList *qmp_query_events(Error **errp)
     EventInfoList *info, *ev_list = NULL;
     QAPIEvent e;
 
-    for (e = 0 ; e < QAPI_EVENT_MAX ; e++) {
+    for (e = 0 ; e < QAPI_EVENT__MAX ; e++) {
         const char *event_name = QAPIEvent_lookup[e];
         assert(event_name != NULL);
         info = g_malloc0(sizeof(*info));
@@ -1386,7 +1386,7 @@ static void hmp_mouse_move(Monitor *mon, const QDict *qdict)
 
 static void hmp_mouse_button(Monitor *mon, const QDict *qdict)
 {
-    static uint32_t bmap[INPUT_BUTTON_MAX] = {
+    static uint32_t bmap[INPUT_BUTTON__MAX] = {
         [INPUT_BUTTON_LEFT]       = MOUSE_EVENT_LBUTTON,
         [INPUT_BUTTON_MIDDLE]     = MOUSE_EVENT_MBUTTON,
         [INPUT_BUTTON_RIGHT]      = MOUSE_EVENT_RBUTTON,
@@ -3217,7 +3217,7 @@ void sendkey_completion(ReadLineState *rs, int nb_args, const char *str)
     }
     len = strlen(str);
     readline_set_completion_index(rs, len);
-    for (i = 0; i < Q_KEY_CODE_MAX; i++) {
+    for (i = 0; i < Q_KEY_CODE__MAX; i++) {
         if (!strncmp(str, QKeyCode_lookup[i], len)) {
             readline_add_completion(rs, QKeyCode_lookup[i]);
         }
@@ -3316,7 +3316,7 @@ void migrate_set_capability_completion(ReadLineState *rs, int nb_args,
     readline_set_completion_index(rs, len);
     if (nb_args == 2) {
         int i;
-        for (i = 0; i < MIGRATION_CAPABILITY_MAX; i++) {
+        for (i = 0; i < MIGRATION_CAPABILITY__MAX; i++) {
             const char *name = MigrationCapability_lookup[i];
             if (!strncmp(str, name, len)) {
                 readline_add_completion(rs, name);
@@ -3337,7 +3337,7 @@ void migrate_set_parameter_completion(ReadLineState *rs, int nb_args,
     readline_set_completion_index(rs, len);
     if (nb_args == 2) {
         int i;
-        for (i = 0; i < MIGRATION_PARAMETER_MAX; i++) {
+        for (i = 0; i < MIGRATION_PARAMETER__MAX; i++) {
             const char *name = MigrationParameter_lookup[i];
             if (!strncmp(str, name, len)) {
                 readline_add_completion(rs, name);

net/net.c

@@ -943,7 +943,7 @@ static int net_init_nic(const NetClientOptions *opts, const char *name,
 }
 
 
-static int (* const net_client_init_fun[NET_CLIENT_OPTIONS_KIND_MAX])(
+static int (* const net_client_init_fun[NET_CLIENT_OPTIONS_KIND__MAX])(
     const NetClientOptions *opts,
     const char *name,
     NetClientState *peer, Error **errp) = {
@@ -1296,7 +1296,7 @@ void qmp_set_link(const char *name, bool up, Error **errp)
     int queues, i;
 
     queues = qemu_find_net_clients_except(name, ncs,
-                                          NET_CLIENT_OPTIONS_KIND_MAX,
+                                          NET_CLIENT_OPTIONS_KIND__MAX,
                                           MAX_QUEUE_NUM);
 
     if (queues == 0) {

qemu-nbd.c

@@ -487,7 +487,7 @@ int main(int argc, char **argv)
             detect_zeroes =
                 qapi_enum_parse(BlockdevDetectZeroesOptions_lookup,
                                 optarg,
-                                BLOCKDEV_DETECT_ZEROES_OPTIONS_MAX,
+                                BLOCKDEV_DETECT_ZEROES_OPTIONS__MAX,
                                 BLOCKDEV_DETECT_ZEROES_OPTIONS_OFF,
                                 &local_err);
             if (local_err) {

replay/replay-input.c

@@ -61,7 +61,7 @@ void replay_save_input_event(InputEvent *evt)
             replay_put_dword(evt->u.key->key->u.qcode);
             replay_put_byte(evt->u.key->down);
             break;
-        case KEY_VALUE_KIND_MAX:
+        case KEY_VALUE_KIND__MAX:
             /* keep gcc happy */
             break;
         }
@@ -78,7 +78,7 @@ void replay_save_input_event(InputEvent *evt)
         replay_put_dword(evt->u.abs->axis);
         replay_put_qword(evt->u.abs->value);
         break;
-    case INPUT_EVENT_KIND_MAX:
+    case INPUT_EVENT_KIND__MAX:
         /* keep gcc happy */
         break;
     }
@@ -109,7 +109,7 @@ InputEvent *replay_read_input_event(void)
             evt.u.key->key->u.qcode = (QKeyCode)replay_get_dword();
             evt.u.key->down = replay_get_byte();
             break;
-        case KEY_VALUE_KIND_MAX:
+        case KEY_VALUE_KIND__MAX:
             /* keep gcc happy */
             break;
         }
@@ -129,7 +129,7 @@ InputEvent *replay_read_input_event(void)
         evt.u.abs->axis = (InputAxis)replay_get_dword();
         evt.u.abs->value = replay_get_qword();
         break;
-    case INPUT_EVENT_KIND_MAX:
+    case INPUT_EVENT_KIND__MAX:
         /* keep gcc happy */
         break;
     }

scripts/qapi.py

@@ -918,7 +918,7 @@ def c_type(self, is_param=False):
         return c_name(self.name)
 
     def c_null(self):
-        return c_enum_const(self.name, (self.values + ['MAX'])[0],
+        return c_enum_const(self.name, (self.values + ['_MAX'])[0],
                             self.prefix)
 
     def json_type(self):
@@ -1568,7 +1568,7 @@ def gen_enum_lookup(name, values, prefix=None):
 ''',
                      index=index, value=value)
 
-    max_index = c_enum_const(name, 'MAX', prefix)
+    max_index = c_enum_const(name, '_MAX', prefix)
     ret += mcgen('''
     [%(max_index)s] = NULL,
 };
@@ -1579,7 +1579,7 @@ def gen_enum_lookup(name, values, prefix=None):
 
 def gen_enum(name, values, prefix=None):
     # append automatically generated _MAX value
-    enum_values = values + ['MAX']
+    enum_values = values + ['_MAX']
 
     ret = mcgen('''
 

tests/test-qmp-output-visitor.c

@@ -128,7 +128,7 @@ static void test_visitor_out_enum(TestOutputVisitorData *data,
     QObject *obj;
     EnumOne i;
 
-    for (i = 0; i < ENUM_ONE_MAX; i++) {
+    for (i = 0; i < ENUM_ONE__MAX; i++) {
         visit_type_EnumOne(data->ov, &i, "unused", &error_abort);
 
         obj = qmp_output_get_qobject(data->qov);
@@ -143,7 +143,7 @@ static void test_visitor_out_enum(TestOutputVisitorData *data,
 static void test_visitor_out_enum_errors(TestOutputVisitorData *data,
                                          const void *unused)
 {
-    EnumOne i, bad_values[] = { ENUM_ONE_MAX, -1 };
+    EnumOne i, bad_values[] = { ENUM_ONE__MAX, -1 };
     Error *err;
 
     for (i = 0; i < ARRAY_SIZE(bad_values) ; i++) {
@@ -247,7 +247,7 @@ static void test_visitor_out_struct_nested(TestOutputVisitorData *data,
 static void test_visitor_out_struct_errors(TestOutputVisitorData *data,
                                            const void *unused)
 {
-    EnumOne bad_values[] = { ENUM_ONE_MAX, -1 };
+    EnumOne bad_values[] = { ENUM_ONE__MAX, -1 };
     UserDefOne u = {0};
     UserDefOne *pu = &u;
     Error *err;

tests/test-string-output-visitor.c

@@ -194,7 +194,7 @@ static void test_visitor_out_enum(TestOutputVisitorData *data,
     char *str;
     EnumOne i;
 
-    for (i = 0; i < ENUM_ONE_MAX; i++) {
+    for (i = 0; i < ENUM_ONE__MAX; i++) {
         char *str_human;
 
         visit_type_EnumOne(data->ov, &i, "unused", &err);
@@ -217,7 +217,7 @@ static void test_visitor_out_enum(TestOutputVisitorData *data,
 static void test_visitor_out_enum_errors(TestOutputVisitorData *data,
                                          const void *unused)
 {
-    EnumOne i, bad_values[] = { ENUM_ONE_MAX, -1 };
+    EnumOne i, bad_values[] = { ENUM_ONE__MAX, -1 };
     Error *err;
 
     for (i = 0; i < ARRAY_SIZE(bad_values) ; i++) {

tpm.c

@@ -32,7 +32,7 @@ static TPMDriverOps const *be_drivers[TPM_MAX_DRIVERS] = {
 };
 
 static enum TpmModel tpm_models[TPM_MAX_MODELS] = {
-    TPM_MODEL_MAX,
+    TPM_MODEL__MAX,
 };
 
 int tpm_register_model(enum TpmModel model)
@@ -40,7 +40,7 @@ int tpm_register_model(enum TpmModel model)
     int i;
 
     for (i = 0; i < TPM_MAX_MODELS; i++) {
-        if (tpm_models[i] == TPM_MODEL_MAX) {
+        if (tpm_models[i] == TPM_MODEL__MAX) {
             tpm_models[i] = model;
             return 0;
         }
@@ -272,7 +272,7 @@ static TPMInfo *qmp_query_tpm_inst(TPMBackend *drv)
             tpo->has_cancel_path = true;
         }
         break;
-    case TPM_TYPE_MAX:
+    case TPM_TYPE__MAX:
         break;
     }
 
@@ -311,7 +311,7 @@ TpmTypeList *qmp_query_tpm_types(Error **errp)
     unsigned int i = 0;
     TpmTypeList *head = NULL, *prev = NULL, *cur_item;
 
-    for (i = 0; i < TPM_TYPE_MAX; i++) {
+    for (i = 0; i < TPM_TYPE__MAX; i++) {
         if (!tpm_driver_find_by_type(i)) {
             continue;
         }
@@ -335,7 +335,7 @@ TpmModelList *qmp_query_tpm_models(Error **errp)
     unsigned int i = 0;
     TpmModelList *head = NULL, *prev = NULL, *cur_item;
 
-    for (i = 0; i < TPM_MODEL_MAX; i++) {
+    for (i = 0; i < TPM_MODEL__MAX; i++) {
         if (!tpm_model_is_registered(i)) {
             continue;
         }

ui/cocoa.m

@@ -733,7 +733,7 @@ - (void) handleEvent:(NSEvent *)event
          */
         if ((isMouseGrabbed || [[self window] isKeyWindow]) &&
             (last_buttons != buttons)) {
-            static uint32_t bmap[INPUT_BUTTON_MAX] = {
+            static uint32_t bmap[INPUT_BUTTON__MAX] = {
                 [INPUT_BUTTON_LEFT]       = MOUSE_EVENT_LBUTTON,
                 [INPUT_BUTTON_MIDDLE]     = MOUSE_EVENT_MBUTTON,
                 [INPUT_BUTTON_RIGHT]      = MOUSE_EVENT_RBUTTON,

ui/console.c

@@ -1108,7 +1108,7 @@ void kbd_put_keysym_console(QemuConsole *s, int keysym)
     }
 }
 
-static const int qcode_to_keysym[Q_KEY_CODE_MAX] = {
+static const int qcode_to_keysym[Q_KEY_CODE__MAX] = {
     [Q_KEY_CODE_UP]     = QEMU_KEY_UP,
     [Q_KEY_CODE_DOWN]   = QEMU_KEY_DOWN,
     [Q_KEY_CODE_RIGHT]  = QEMU_KEY_RIGHT,

ui/input-keymap.c

@@ -132,7 +132,7 @@ static const int qcode_to_number[] = {
     [Q_KEY_CODE_RO] = 0x73,
     [Q_KEY_CODE_KP_COMMA] = 0x7e,
 
-    [Q_KEY_CODE_MAX] = 0,
+    [Q_KEY_CODE__MAX] = 0,
 };
 
 static int number_to_qcode[0x100];
@@ -154,7 +154,7 @@ int qemu_input_key_number_to_qcode(uint8_t nr)
     if (first) {
         int qcode, number;
         first = false;
-        for (qcode = 0; qcode < Q_KEY_CODE_MAX; qcode++) {
+        for (qcode = 0; qcode < Q_KEY_CODE__MAX; qcode++) {
             number = qcode_to_number[qcode];
             assert(number < ARRAY_SIZE(number_to_qcode));
             number_to_qcode[number] = qcode;

ui/input-legacy.c

@@ -38,7 +38,7 @@ struct QEMUPutMouseEntry {
     /* new input core */
     QemuInputHandler h;
     QemuInputHandlerState *s;
-    int axis[INPUT_AXIS_MAX];
+    int axis[INPUT_AXIS__MAX];
     int buttons;
 };
 
@@ -67,7 +67,7 @@ int index_from_key(const char *key)
         }
     }
 
-    /* Return Q_KEY_CODE_MAX if the key is invalid */
+    /* Return Q_KEY_CODE__MAX if the key is invalid */
     return i;
 }
 
@@ -143,7 +143,7 @@ QEMUPutKbdEntry *qemu_add_kbd_event_handler(QEMUPutKBDEvent *func, void *opaque)
 static void legacy_mouse_event(DeviceState *dev, QemuConsole *src,
                                InputEvent *evt)
 {
-    static const int bmap[INPUT_BUTTON_MAX] = {
+    static const int bmap[INPUT_BUTTON__MAX] = {
         [INPUT_BUTTON_LEFT]   = MOUSE_EVENT_LBUTTON,
         [INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON,
         [INPUT_BUTTON_RIGHT]  = MOUSE_EVENT_RBUTTON,

ui/input.c

@@ -211,7 +211,7 @@ static void qemu_input_event_trace(QemuConsole *src, InputEvent *evt)
             name = QKeyCode_lookup[evt->u.key->key->u.qcode];
             trace_input_event_key_qcode(idx, name, evt->u.key->down);
             break;
-        case KEY_VALUE_KIND_MAX:
+        case KEY_VALUE_KIND__MAX:
             /* keep gcc happy */
             break;
         }
@@ -228,7 +228,7 @@ static void qemu_input_event_trace(QemuConsole *src, InputEvent *evt)
         name = InputAxis_lookup[evt->u.abs->axis];
         trace_input_event_abs(idx, name, evt->u.abs->value);
         break;
-    case INPUT_EVENT_KIND_MAX:
+    case INPUT_EVENT_KIND__MAX:
         /* keep gcc happy */
         break;
     }
@@ -430,7 +430,7 @@ void qemu_input_update_buttons(QemuConsole *src, uint32_t *button_map,
     InputButton btn;
     uint32_t mask;
 
-    for (btn = 0; btn < INPUT_BUTTON_MAX; btn++) {
+    for (btn = 0; btn < INPUT_BUTTON__MAX; btn++) {
         mask = button_map[btn];
         if ((button_old & mask) == (button_new & mask)) {
             continue;

ui/sdl.c

@@ -465,7 +465,7 @@ static void sdl_mouse_mode_change(Notifier *notify, void *data)
 
 static void sdl_send_mouse_event(int dx, int dy, int x, int y, int state)
 {
-    static uint32_t bmap[INPUT_BUTTON_MAX] = {
+    static uint32_t bmap[INPUT_BUTTON__MAX] = {
         [INPUT_BUTTON_LEFT]       = SDL_BUTTON(SDL_BUTTON_LEFT),
         [INPUT_BUTTON_MIDDLE]     = SDL_BUTTON(SDL_BUTTON_MIDDLE),
         [INPUT_BUTTON_RIGHT]      = SDL_BUTTON(SDL_BUTTON_RIGHT),

ui/sdl2.c

@@ -256,7 +256,7 @@ static void sdl_mouse_mode_change(Notifier *notify, void *data)
 static void sdl_send_mouse_event(struct sdl2_console *scon, int dx, int dy,
                                  int x, int y, int state)
 {
-    static uint32_t bmap[INPUT_BUTTON_MAX] = {
+    static uint32_t bmap[INPUT_BUTTON__MAX] = {
         [INPUT_BUTTON_LEFT]       = SDL_BUTTON(SDL_BUTTON_LEFT),
         [INPUT_BUTTON_MIDDLE]     = SDL_BUTTON(SDL_BUTTON_MIDDLE),
         [INPUT_BUTTON_RIGHT]      = SDL_BUTTON(SDL_BUTTON_RIGHT),

ui/spice-input.c

@@ -107,7 +107,7 @@ typedef struct QemuSpicePointer {
 static void spice_update_buttons(QemuSpicePointer *pointer,
                                  int wheel, uint32_t button_mask)
 {
-    static uint32_t bmap[INPUT_BUTTON_MAX] = {
+    static uint32_t bmap[INPUT_BUTTON__MAX] = {
         [INPUT_BUTTON_LEFT]        = 0x01,
         [INPUT_BUTTON_MIDDLE]      = 0x04,
         [INPUT_BUTTON_RIGHT]       = 0x02,

ui/vnc.c

@@ -1676,7 +1676,7 @@ static void check_pointer_type_change(Notifier *notifier, void *data)
 
 static void pointer_event(VncState *vs, int button_mask, int x, int y)
 {
-    static uint32_t bmap[INPUT_BUTTON_MAX] = {
+    static uint32_t bmap[INPUT_BUTTON__MAX] = {
         [INPUT_BUTTON_LEFT]       = 0x01,
         [INPUT_BUTTON_MIDDLE]     = 0x02,
         [INPUT_BUTTON_RIGHT]      = 0x04,

vl.c

@@ -570,8 +570,8 @@ static int default_driver_check(void *opaque, QemuOpts *opts, Error **errp)
 
 static RunState current_run_state = RUN_STATE_PRELAUNCH;
 
-/* We use RUN_STATE_MAX but any invalid value will do */
-static RunState vmstop_requested = RUN_STATE_MAX;
+/* We use RUN_STATE__MAX but any invalid value will do */
+static RunState vmstop_requested = RUN_STATE__MAX;
 static QemuMutex vmstop_lock;
 
 typedef struct {
@@ -642,10 +642,10 @@ static const RunStateTransition runstate_transitions_def[] = {
     { RUN_STATE_GUEST_PANICKED, RUN_STATE_RUNNING },
     { RUN_STATE_GUEST_PANICKED, RUN_STATE_FINISH_MIGRATE },
 
-    { RUN_STATE_MAX, RUN_STATE_MAX },
+    { RUN_STATE__MAX, RUN_STATE__MAX },
 };
 
-static bool runstate_valid_transitions[RUN_STATE_MAX][RUN_STATE_MAX];
+static bool runstate_valid_transitions[RUN_STATE__MAX][RUN_STATE__MAX];
 
 bool runstate_check(RunState state)
 {
@@ -669,7 +669,7 @@ static void runstate_init(void)
     const RunStateTransition *p;
 
     memset(&runstate_valid_transitions, 0, sizeof(runstate_valid_transitions));
-    for (p = &runstate_transitions_def[0]; p->from != RUN_STATE_MAX; p++) {
+    for (p = &runstate_transitions_def[0]; p->from != RUN_STATE__MAX; p++) {
         runstate_valid_transitions[p->from][p->to] = true;
     }
 
@@ -679,7 +679,7 @@ static void runstate_init(void)
 /* This function will abort() on invalid state transitions */
 void runstate_set(RunState new_state)
 {
-    assert(new_state < RUN_STATE_MAX);
+    assert(new_state < RUN_STATE__MAX);
 
     if (!runstate_valid_transitions[current_run_state][new_state]) {
         error_report("invalid runstate transition: '%s' -> '%s'",
@@ -717,9 +717,9 @@ static bool qemu_vmstop_requested(RunState *r)
 {
     qemu_mutex_lock(&vmstop_lock);
     *r = vmstop_requested;
-    vmstop_requested = RUN_STATE_MAX;
+    vmstop_requested = RUN_STATE__MAX;
     qemu_mutex_unlock(&vmstop_lock);
-    return *r < RUN_STATE_MAX;
+    return *r < RUN_STATE__MAX;
 }
 
 void qemu_system_vmstop_request_prepare(void)
@@ -739,7 +739,7 @@ void vm_start(void)
     RunState requested;
 
     qemu_vmstop_requested(&requested);
-    if (runstate_is_running() && requested == RUN_STATE_MAX) {
+    if (runstate_is_running() && requested == RUN_STATE__MAX) {
         return;
     }