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Fix for sporadic segfault with MYSQLI_OPT_INT_AND_FLOAT_NATIVE #2249

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Fix for sporadic segfault with MYSQLI_OPT_INT_AND_FLOAT_NATIVE #2249

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8 changes: 7 additions & 1 deletion ext/mysqlnd/mysqlnd_wireprotocol.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1477,7 +1477,12 @@ php_mysqlnd_read_row_ex(MYSQLND_PFC * pfc,
zero-length byte, don't read the body, there is no such.
*/

*data_size = 0;
/*
We're allocating an extra byte, as php_mysqlnd_rowp_read_text_protocol_aux
needs to be able to append a terminating \0 for atoi/atof.
*/
*data_size = 1;

while (1) {
if (FAIL == mysqlnd_read_header(pfc, vio, &header, stats, error_info)) {
ret = FAIL;
Expand Down Expand Up @@ -1526,6 +1531,7 @@ php_mysqlnd_read_row_ex(MYSQLND_PFC * pfc,
pool->free_chunk(pool, *buffer);
*buffer = NULL;
}
*data_size--;
DBG_RETURN(ret);
}
/* }}} */
Expand Down