Change float operations to safe_emalloc().

Original idea by Sascha (see sess_sqlite.c)

diff --git a/ext/sqlite/sqlite.c b/ext/sqlite/sqlite.c
index 9ba406c16b5aaefb433a1ef1b173bbe8f50a4804..545a919dc5fcec9857d559433a7a927e79d4cd0d 100644 (file)
--- a/ext/sqlite/sqlite.c
+++ b/ext/sqlite/sqlite.c
@@ -2612,7 +2612,7 @@ PHP_FUNCTION(sqlite_escape_string)
                /* binary string */
                int enclen;
                
-               ret = emalloc( 1 + 5 + stringlen * ((float) 256 / (float) 253) );
+               ret = safe_emalloc(1 + stringlen / 254, 257, 3);
                ret[0] = '\x01';
                enclen = php_sqlite_encode_binary(string, stringlen, ret+1);
                RETVAL_STRINGL(ret, enclen+1, 0);
@@ -2842,7 +2842,7 @@ PHP_FUNCTION(sqlite_udf_encode_binary)
                int enclen;
                char *ret;
                
-               ret = emalloc( 1 + 5 + datalen * ((float) 256 / (float) 253) );
+               ret = safe_emalloc(1 + datalen / 254, 257, 3);
                ret[0] = '\x01';
                enclen = php_sqlite_encode_binary(data, datalen, ret+1);
                RETVAL_STRINGL(ret, enclen+1, 0);