From 7fb1cf1606c78c9d5b538f29176fd5a101726a9d Mon Sep 17 00:00:00 2001 From: Eric Blake Date: Wed, 18 Nov 2015 01:52:57 -0700 Subject: 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 Message-Id: <1447836791-369-23-git-send-email-eblake@redhat.com> Reviewed-by: Juan Quintela [Rebased to current master, commit message tweaked] Signed-off-by: Markus Armbruster --- hmp.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'hmp.c') diff --git a/hmp.c b/hmp.c index 21406059c7..1b402c4b74 100644 --- a/hmp.c +++ b/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; -- cgit v1.2.1