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Use stack allocation in timezone_initialize() (#19394)

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This lives temporarily, avoid overhead and handling of heap allocation.
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Niels Dossche 2025-08-08 20:29:39 +02:00 • committed by GitHub
parent 9673079903
commit 99e6b0ecc8
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1 changed files with 8 additions and 12 deletions
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20
ext/date/php_date.c
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@ -3970,40 +3970,36 @@ PHP_FUNCTION(date_diff)
static bool timezone_initialize(php_timezone_obj *tzobj, const zend_string *tz_zstr, char **warning_message) /* {{{ */ static bool timezone_initialize(php_timezone_obj *tzobj, const zend_string *tz_zstr, char **warning_message) /* {{{ */
{ {
timelib_time *dummy_t = ecalloc(1, sizeof(timelib_time)); timelib_time dummy_t = {0};
int dst, not_found; int dst, not_found;
const char *tz = ZSTR_VAL(tz_zstr); const char *tz = ZSTR_VAL(tz_zstr);
ZEND_ASSERT(!zend_str_has_nul_byte(tz_zstr) && "timezone should have been checked to not have null bytes"); ZEND_ASSERT(!zend_str_has_nul_byte(tz_zstr) && "timezone should have been checked to not have null bytes");
dummy_t->z = timelib_parse_zone(&tz, &dst, dummy_t, &not_found, DATE_TIMEZONEDB, php_date_parse_tzfile_wrapper); dummy_t.z = timelib_parse_zone(&tz, &dst, &dummy_t, &not_found, DATE_TIMEZONEDB, php_date_parse_tzfile_wrapper);
if ((dummy_t->z >= (100 * 60 * 60)) || (dummy_t->z <= (-100 * 60 * 60))) { if ((dummy_t.z >= (100 * 60 * 60)) || (dummy_t.z <= (-100 * 60 * 60))) {
if (warning_message) { if (warning_message) {
spprintf(warning_message, 0, "Timezone offset is out of range (%s)", ZSTR_VAL(tz_zstr)); spprintf(warning_message, 0, "Timezone offset is out of range (%s)", ZSTR_VAL(tz_zstr));
} }
timelib_free(dummy_t->tz_abbr); timelib_free(dummy_t.tz_abbr);
efree(dummy_t);
return false; return false;
} }
dummy_t->dst = dst; dummy_t.dst = dst;
if (!not_found && (*tz != '\0')) { if (!not_found && (*tz != '\0')) {
if (warning_message) { if (warning_message) {
spprintf(warning_message, 0, "Unknown or bad timezone (%s)", ZSTR_VAL(tz_zstr)); spprintf(warning_message, 0, "Unknown or bad timezone (%s)", ZSTR_VAL(tz_zstr));
} }
timelib_free(dummy_t->tz_abbr); timelib_free(dummy_t.tz_abbr);
efree(dummy_t);
return false; return false;
} }
if (not_found) { if (not_found) {
if (warning_message) { if (warning_message) {
spprintf(warning_message, 0, "Unknown or bad timezone (%s)", ZSTR_VAL(tz_zstr)); spprintf(warning_message, 0, "Unknown or bad timezone (%s)", ZSTR_VAL(tz_zstr));
} }
efree(dummy_t);
return false; return false;
} else { } else {
set_timezone_from_timelib_time(tzobj, dummy_t); set_timezone_from_timelib_time(tzobj, &dummy_t);
timelib_free(dummy_t->tz_abbr); timelib_free(dummy_t.tz_abbr);
efree(dummy_t);
return true; return true;
} }
} /* }}} */ } /* }}} */