Use memory safe snprintf() in Connect Engine and elsewhere (#2210)
Continue with similar changes as done in 19af1890 to replace sprintf(buf, ...) with snprintf(buf, sizeof(buf), ...), specifically in the "easy" cases where buf is allocated with a size known at compile time. All new code of the whole pull request, including one or several files that are either new files or modified ones, are contributed under the BSD-new license. I am contributing on behalf of my employer Amazon Web Services, Inc.
This commit is contained in:
parent
b2cfcf1d1f
commit
9de9f105b5
@ -449,7 +449,7 @@ list_dbs(MYSQL *mysql,const char *wild)
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MYSQL_RES *tresult = mysql_list_tables(mysql,(char*)NULL);
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if (mysql_affected_rows(mysql) > 0)
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{
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sprintf(tables,"%6lu",(ulong) mysql_affected_rows(mysql));
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snprintf(tables, sizeof(tables), "%6lu",(ulong) mysql_affected_rows(mysql));
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rowcount = 0;
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if (opt_verbose > 1)
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{
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@ -470,13 +470,13 @@ list_dbs(MYSQL *mysql,const char *wild)
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}
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}
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}
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sprintf(rows,"%12lu",rowcount);
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snprintf(rows, sizeof(rows), "%12lu", rowcount);
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}
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}
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else
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{
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sprintf(tables,"%6d",0);
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sprintf(rows,"%12d",0);
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snprintf(tables, sizeof(tables), "%6d" ,0);
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snprintf(rows, sizeof(rows), "%12d", 0);
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}
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mysql_free_result(tresult);
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}
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@ -594,7 +594,7 @@ list_tables(MYSQL *mysql,const char *db,const char *table)
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}
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else
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{
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sprintf(fields,"%8u",(uint) mysql_num_fields(rresult));
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snprintf(fields, sizeof(fields), "%8u", (uint) mysql_num_fields(rresult));
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mysql_free_result(rresult);
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if (opt_verbose > 1)
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@ -610,10 +610,10 @@ list_tables(MYSQL *mysql,const char *db,const char *table)
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rowcount += (unsigned long) strtoull(rrow[0], (char**) 0, 10);
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mysql_free_result(rresult);
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}
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sprintf(rows,"%10lu",rowcount);
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snprintf(rows, sizeof(rows), "%10lu", rowcount);
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}
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else
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sprintf(rows,"%10d",0);
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snprintf(rows, sizeof(rows), "%10d", 0);
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}
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}
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}
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@ -412,7 +412,7 @@ void field_real::add()
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if ((decs = decimals()) >= FLOATING_POINT_DECIMALS)
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{
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length= sprintf(buff, "%g", num);
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length= snprintf(buff, sizeof(buff), "%g", num);
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if (rint(num) != num)
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max_notzero_dec_len = 1;
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}
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@ -423,7 +423,7 @@ void field_real::add()
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snprintf(buff, sizeof(buff)-1, "%-.*f", (int) decs, num);
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length = (uint) strlen(buff);
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#else
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length= sprintf(buff, "%-.*f", (int) decs, num);
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length= snprintf(buff, sizeof(buff), "%-.*f", (int) decs, num);
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#endif
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// We never need to check further than this
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@ -810,32 +810,32 @@ void field_str::get_opt_type(String *answer, ha_rows total_rows)
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if (can_be_still_num)
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{
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if (num_info.is_float)
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sprintf(buff, "DOUBLE"); // number was like 1e+50... TODO:
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snprintf(buff, sizeof(buff), "DOUBLE"); // number was like 1e+50... TODO:
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else if (num_info.decimals) // DOUBLE(%d,%d) sometime
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{
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if (num_info.dval > -FLT_MAX && num_info.dval < FLT_MAX)
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sprintf(buff, "FLOAT(%d,%d)", (num_info.integers + num_info.decimals), num_info.decimals);
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snprintf(buff, sizeof(buff), "FLOAT(%d,%d)", (num_info.integers + num_info.decimals), num_info.decimals);
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else
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sprintf(buff, "DOUBLE(%d,%d)", (num_info.integers + num_info.decimals), num_info.decimals);
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snprintf(buff, sizeof(buff), "DOUBLE(%d,%d)", (num_info.integers + num_info.decimals), num_info.decimals);
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}
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else if (ev_num_info.llval >= -128 &&
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ev_num_info.ullval <=
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(ulonglong) (ev_num_info.llval >= 0 ? 255 : 127))
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sprintf(buff, "TINYINT(%d)", num_info.integers);
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snprintf(buff, sizeof(buff), "TINYINT(%d)", num_info.integers);
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else if (ev_num_info.llval >= INT_MIN16 &&
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ev_num_info.ullval <= (ulonglong) (ev_num_info.llval >= 0 ?
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UINT_MAX16 : INT_MAX16))
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sprintf(buff, "SMALLINT(%d)", num_info.integers);
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snprintf(buff, sizeof(buff), "SMALLINT(%d)", num_info.integers);
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else if (ev_num_info.llval >= INT_MIN24 &&
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ev_num_info.ullval <= (ulonglong) (ev_num_info.llval >= 0 ?
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UINT_MAX24 : INT_MAX24))
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sprintf(buff, "MEDIUMINT(%d)", num_info.integers);
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snprintf(buff, sizeof(buff), "MEDIUMINT(%d)", num_info.integers);
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else if (ev_num_info.llval >= INT_MIN32 &&
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ev_num_info.ullval <= (ulonglong) (ev_num_info.llval >= 0 ?
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UINT_MAX32 : INT_MAX32))
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sprintf(buff, "INT(%d)", num_info.integers);
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snprintf(buff, sizeof(buff), "INT(%d)", num_info.integers);
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else
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sprintf(buff, "BIGINT(%d)", num_info.integers);
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snprintf(buff, sizeof(buff), "BIGINT(%d)", num_info.integers);
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answer->append(buff, (uint) strlen(buff));
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if (ev_num_info.llval >= 0 && ev_num_info.min_dval >= 0)
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answer->append(STRING_WITH_LEN(" UNSIGNED"));
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@ -853,12 +853,12 @@ void field_str::get_opt_type(String *answer, ha_rows total_rows)
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}
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else if ((max_length * (total_rows - nulls)) < (sum + total_rows))
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{
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sprintf(buff, "CHAR(%d)", (int) max_length);
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snprintf(buff, sizeof(buff), "CHAR(%d)", (int) max_length);
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answer->append(buff, (uint) strlen(buff));
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}
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else
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{
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sprintf(buff, "VARCHAR(%d)", (int) max_length);
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snprintf(buff, sizeof(buff), "VARCHAR(%d)", (int) max_length);
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answer->append(buff, (uint) strlen(buff));
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}
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}
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@ -897,18 +897,18 @@ void field_real::get_opt_type(String *answer,
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0 : (item->decimals + 1));
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if (min_arg >= -128 && max_arg <= (min_arg >= 0 ? 255 : 127))
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sprintf(buff, "TINYINT(%d)", len);
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snprintf(buff, sizeof(buff), "TINYINT(%d)", len);
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else if (min_arg >= INT_MIN16 && max_arg <= (min_arg >= 0 ?
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UINT_MAX16 : INT_MAX16))
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sprintf(buff, "SMALLINT(%d)", len);
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snprintf(buff, sizeof(buff), "SMALLINT(%d)", len);
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else if (min_arg >= INT_MIN24 && max_arg <= (min_arg >= 0 ?
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UINT_MAX24 : INT_MAX24))
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sprintf(buff, "MEDIUMINT(%d)", len);
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snprintf(buff, sizeof(buff), "MEDIUMINT(%d)", len);
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else if (min_arg >= INT_MIN32 && max_arg <= (min_arg >= 0 ?
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UINT_MAX32 : INT_MAX32))
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sprintf(buff, "INT(%d)", len);
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snprintf(buff, sizeof(buff), "INT(%d)", len);
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else
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sprintf(buff, "BIGINT(%d)", len);
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snprintf(buff, sizeof(buff), "BIGINT(%d)", len);
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answer->append(buff, (uint) strlen(buff));
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if (min_arg >= 0)
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answer->append(STRING_WITH_LEN(" UNSIGNED"));
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@ -923,10 +923,10 @@ void field_real::get_opt_type(String *answer,
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else
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{
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if (min_arg >= -FLT_MAX && max_arg <= FLT_MAX)
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sprintf(buff, "FLOAT(%d,%d)", (int) max_length - (item->decimals + 1) + max_notzero_dec_len,
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snprintf(buff, sizeof(buff), "FLOAT(%d,%d)", (int) max_length - (item->decimals + 1) + max_notzero_dec_len,
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max_notzero_dec_len);
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else
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sprintf(buff, "DOUBLE(%d,%d)", (int) max_length - (item->decimals + 1) + max_notzero_dec_len,
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snprintf(buff, sizeof(buff), "DOUBLE(%d,%d)", (int) max_length - (item->decimals + 1) + max_notzero_dec_len,
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max_notzero_dec_len);
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answer->append(buff, (uint) strlen(buff));
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}
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@ -945,18 +945,18 @@ void field_longlong::get_opt_type(String *answer,
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char buff[MAX_FIELD_WIDTH];
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if (min_arg >= -128 && max_arg <= (min_arg >= 0 ? 255 : 127))
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sprintf(buff, "TINYINT(%d)", (int) max_length);
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snprintf(buff, sizeof(buff), "TINYINT(%d)", (int) max_length);
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else if (min_arg >= INT_MIN16 && max_arg <= (min_arg >= 0 ?
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UINT_MAX16 : INT_MAX16))
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sprintf(buff, "SMALLINT(%d)", (int) max_length);
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snprintf(buff, sizeof(buff), "SMALLINT(%d)", (int) max_length);
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else if (min_arg >= INT_MIN24 && max_arg <= (min_arg >= 0 ?
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UINT_MAX24 : INT_MAX24))
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sprintf(buff, "MEDIUMINT(%d)", (int) max_length);
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snprintf(buff, sizeof(buff), "MEDIUMINT(%d)", (int) max_length);
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else if (min_arg >= INT_MIN32 && max_arg <= (min_arg >= 0 ?
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UINT_MAX32 : INT_MAX32))
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sprintf(buff, "INT(%d)", (int) max_length);
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snprintf(buff, sizeof(buff), "INT(%d)", (int) max_length);
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else
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sprintf(buff, "BIGINT(%d)", (int) max_length);
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snprintf(buff, sizeof(buff), "BIGINT(%d)", (int) max_length);
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answer->append(buff, (uint) strlen(buff));
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if (min_arg >= 0)
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answer->append(STRING_WITH_LEN(" UNSIGNED"));
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@ -976,15 +976,15 @@ void field_ulonglong::get_opt_type(String *answer,
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char buff[MAX_FIELD_WIDTH];
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if (max_arg < 256)
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sprintf(buff, "TINYINT(%d) UNSIGNED", (int) max_length);
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snprintf(buff, sizeof(buff), "TINYINT(%d) UNSIGNED", (int) max_length);
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else if (max_arg <= ((2 * INT_MAX16) + 1))
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sprintf(buff, "SMALLINT(%d) UNSIGNED", (int) max_length);
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snprintf(buff, sizeof(buff), "SMALLINT(%d) UNSIGNED", (int) max_length);
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else if (max_arg <= ((2 * INT_MAX24) + 1))
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sprintf(buff, "MEDIUMINT(%d) UNSIGNED", (int) max_length);
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snprintf(buff, sizeof(buff), "MEDIUMINT(%d) UNSIGNED", (int) max_length);
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else if (max_arg < (((ulonglong) 1) << 32))
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sprintf(buff, "INT(%d) UNSIGNED", (int) max_length);
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snprintf(buff, sizeof(buff), "INT(%d) UNSIGNED", (int) max_length);
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else
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sprintf(buff, "BIGINT(%d) UNSIGNED", (int) max_length);
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snprintf(buff, sizeof(buff), "BIGINT(%d) UNSIGNED", (int) max_length);
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// if item is FIELD_ITEM, it _must_be_ Field_num in this class
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answer->append(buff, (uint) strlen(buff));
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if (item->type() == Item::FIELD_ITEM &&
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@ -1005,7 +1005,7 @@ void field_decimal::get_opt_type(String *answer,
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my_decimal_set_zero(&zero);
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my_bool is_unsigned= (my_decimal_cmp(&zero, &min_arg) >= 0);
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length= sprintf(buff, "DECIMAL(%d, %d)",
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length= snprintf(buff, sizeof(buff), "DECIMAL(%d, %d)",
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(int) (max_length - (item->decimals ? 1 : 0)),
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item->decimals);
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if (is_unsigned)
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@ -4032,7 +4032,7 @@ bool mysql_show_binlog_events(THD* thd)
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binlog_size= s.st_size;
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if (lex_mi->pos > binlog_size)
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{
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sprintf(errmsg_buf, "Invalid pos specified. Requested from pos:%llu is "
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snprintf(errmsg_buf, sizeof(errmsg_buf), "Invalid pos specified. Requested from pos:%llu is "
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"greater than actual file size:%lu\n", lex_mi->pos,
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(ulong)s.st_size);
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errmsg= errmsg_buf;
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@ -1144,7 +1144,7 @@ my_bool BJNX::LocateArray(PGLOBAL g, PBVAL jarp)
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for (int i = 0; i < n && !Found; i++) {
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Jp->N = m;
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sprintf(s, "[%d]", i + B);
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snprintf(s, sizeof(s), "[%d]", i + B);
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if (Jp->WriteStr(s))
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return true;
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@ -1438,7 +1438,7 @@ my_bool BJNX::AddPath(void)
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for (int i = 0; i <= I; i++) {
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if (Jpnp[i].Type == TYPE_JAR) {
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sprintf(s, "[%d]", Jpnp[i].N + B);
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snprintf(s, sizeof(s), "[%d]", Jpnp[i].N + B);
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if (Jp->WriteStr(s))
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return true;
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@ -14,6 +14,8 @@
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#include <time.h> /* time_t type declaration */
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#include <setjmp.h> /* Long jump declarations */
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#define ROUNDUP_TO_8(num) (((num + 7) / 8) * 8)
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#if defined(_WIN32) && !defined(NOEX)
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#define DllExport __declspec( dllexport )
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#else // !_WIN32
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@ -451,8 +451,14 @@ PQRYRES JDBCSrcCols(PGLOBAL g, PCSZ src, PJPARM sjp)
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if (strstr(src, "%s")) {
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// Place holder for an eventual where clause
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sqry = (char*)PlugSubAlloc(g, NULL, strlen(src) + 2);
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sprintf(sqry, src, "1=1"); // dummy where clause
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size_t sqry_size = strlen(src) + 2;
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sqry = (char*)PlugSubAlloc(g, NULL, sqry_size);
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// Function PlugSubAlloc(...) recalculate string size
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// while allocate memory - it rounds size up size to multiple of 8
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// we need to know the real allocated size
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// to use it in sprintf(...)
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const int sqry_real_allocated_size = ROUNDUP_TO_8(sqry_size);
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snprintf(sqry, sqry_real_allocated_size, src, "1=1"); // dummy where clause
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} else
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sqry = (char*)src;
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@ -1023,13 +1023,13 @@ bool JDOC::SerializeValue(PJVAL jvp)
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case TYPE_DTM:
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return js->Escape(jvp->Strp);
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case TYPE_INTG:
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sprintf(buf, "%d", jvp->N);
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snprintf(buf, sizeof(buf), "%d", jvp->N);
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return js->WriteStr(buf);
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case TYPE_BINT:
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sprintf(buf, "%lld", jvp->LLn);
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snprintf(buf, sizeof(buf), "%lld", jvp->LLn);
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return js->WriteStr(buf);
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case TYPE_DBL: // dfp to limit to the default number of decimals
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sprintf(buf, "%.*f", MY_MIN(jvp->Nd, dfp), jvp->F);
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snprintf(buf, sizeof(buf), "%.*f", MY_MIN(jvp->Nd, dfp), jvp->F);
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return js->WriteStr(buf);
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case TYPE_NULL:
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return js->WriteStr("null");
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|
@ -908,7 +908,7 @@ my_bool JSNX::LocateArray(PGLOBAL g, PJAR jarp)
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for (int i = 0; i < jarp->size() && !Found; i++) {
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Jp->N = m;
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sprintf(s, "[%d]", i + B);
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snprintf(s, sizeof(s), "[%d]", i + B);
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if (Jp->WriteStr(s))
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return true;
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@ -1189,7 +1189,7 @@ my_bool JSNX::AddPath(void) {
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for (int i = 0; i <= I; i++) {
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if (Jpnp[i].Type == TYPE_JAR) {
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sprintf(s, "[%d]", Jpnp[i].N + B);
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snprintf(s, sizeof(s), "[%d]", Jpnp[i].N + B);
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if (Jp->WriteStr(s))
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return true;
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|
@ -371,13 +371,13 @@ char *PlugReadMessage(PGLOBAL g, int mid, char *m)
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PlugSetPath(msgfile, NULL, buff, msg_path);
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if (!(mfile = fopen(msgfile, "rt"))) {
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sprintf(stmsg, "Fail to open message file %s", msgfile);
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snprintf(stmsg, sizeof(stmsg), "Fail to open message file %s", msgfile);
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goto err;
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} // endif mfile
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for (;;)
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if (!fgets(buff, 256, mfile)) {
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sprintf(stmsg, "Cannot get message %d %s", mid, SVP(m));
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snprintf(stmsg, sizeof(stmsg), "Cannot get message %d %s", mid, SVP(m));
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goto fin;
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} else
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if (atoi(buff) == mid)
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@ -386,7 +386,7 @@ char *PlugReadMessage(PGLOBAL g, int mid, char *m)
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if (sscanf(buff, " %*d %.31s \"%.255[^\"]", msgid, stmsg) < 2) {
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// Old message file
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if (!sscanf(buff, " %*d \"%.255[^\"]", stmsg)) {
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sprintf(stmsg, "Bad message file for %d %s", mid, SVP(m));
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snprintf(stmsg, sizeof(stmsg), "Bad message file for %d %s", mid, SVP(m));
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goto fin;
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} else
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m = NULL;
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@ -425,17 +425,18 @@ char *PlugGetMessage(PGLOBAL g, int mid)
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if (n == 0) {
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DWORD rc = GetLastError();
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msg = (char*)PlugSubAlloc(g, NULL, 512); // Extend buf allocation
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n = sprintf(msg, "Message %d, rc=%d: ", mid, rc);
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const int BUF_SIZE= 512;
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msg = (char*)PlugSubAlloc(g, NULL, BUF_SIZE); // Extend buf allocation
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n = snprintf(msg, BUF_SIZE, "Message %d, rc=%d: ", mid, rc);
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FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM |
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FORMAT_MESSAGE_IGNORE_INSERTS, NULL, rc, 0,
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(LPTSTR)(msg + n), 512 - n, NULL);
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(LPTSTR)(msg + n), BUF_SIZE - n, NULL);
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return msg;
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} // endif n
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#else // ALL
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if (!GetRcString(mid, stmsg, 200))
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sprintf(stmsg, "Message %d not found", mid);
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snprintf(stmsg, sizeof(stmsg) "Message %d not found", mid);
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#endif // ALL
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if (g) {
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@ -564,7 +565,7 @@ void *PlugSubAlloc(PGLOBAL g, void *memp, size_t size)
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/*******************************************************************/
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memp = g->Sarea;
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|
||||
size = ((size + 7) / 8) * 8; /* Round up size to multiple of 8 */
|
||||
size = ROUNDUP_TO_8(size); /* Round up size to multiple of 8 */
|
||||
pph = (PPOOLHEADER)memp;
|
||||
|
||||
if (trace(16))
|
||||
|
@ -477,7 +477,7 @@ bool BSONDISC::Find(PGLOBAL g, PBVAL jvp, PCSZ key, int j)
|
||||
n = sizeof(fmt) - (strlen(fmt) + 1);
|
||||
|
||||
if (!tdp->Xcol || stricmp(tdp->Xcol, key)) {
|
||||
sprintf(buf, "%d", k);
|
||||
snprintf(buf, sizeof(buf), "%d", k);
|
||||
|
||||
if (tdp->Uri) {
|
||||
strncat(strncat(fmt, sep, n), buf, n - strlen(sep));
|
||||
@ -798,7 +798,7 @@ void BCUTIL::SetJsonValue(PGLOBAL g, PVAL vp, PBVAL jvp)
|
||||
|
||||
break;
|
||||
default:
|
||||
sprintf(G->Message, "Unsupported column type %d", vp->GetType());
|
||||
snprintf(G->Message, sizeof(G->Message), "Unsupported column type %d", vp->GetType());
|
||||
throw 888;
|
||||
} // endswitch Type
|
||||
|
||||
|
@ -810,7 +810,7 @@ void WMICOL::ReadColumn(PGLOBAL g)
|
||||
char buf[24];
|
||||
int rc = VariantTimeToSystemTime(Prop.date, &stm);
|
||||
|
||||
sprintf(buf, "%02d/%02d/%d %02d:%02d:%02d",
|
||||
snprintf(buf, sizeof(buf), "%02d/%02d/%d %02d:%02d:%02d",
|
||||
stm.wDay, stm.wMonth, stm.wYear,
|
||||
stm.wHour, stm.wMinute, stm.wSecond);
|
||||
Value->SetValue_psz(buf);
|
||||
|
@ -604,7 +604,7 @@ int TYPBLK<TYPE>::GetMaxLength(void)
|
||||
int i, n, m;
|
||||
|
||||
for (i = n = 0; i < Nval; i++) {
|
||||
m = sprintf(buf, Fmt, UnalignedRead(i));
|
||||
m = snprintf(buf, sizeof(buf), Fmt, UnalignedRead(i));
|
||||
n = MY_MAX(n, m);
|
||||
} // endfor i
|
||||
|
||||
|
@ -2626,7 +2626,7 @@ int ha_federatedx::index_read_idx_with_result_set(uchar *buf, uint index,
|
||||
|
||||
if (io->query(sql_query.ptr(), sql_query.length()))
|
||||
{
|
||||
sprintf(error_buffer, "error: %d '%s'",
|
||||
snprintf(error_buffer, sizeof(error_buffer), "error: %d '%s'",
|
||||
io->error_code(), io->error_str());
|
||||
retval= ER_QUERY_ON_FOREIGN_DATA_SOURCE;
|
||||
goto error;
|
||||
@ -3352,7 +3352,7 @@ static int test_connection(MYSQL_THD thd, federatedx_io *io,
|
||||
|
||||
if ((retval= io->query(str.ptr(), str.length())))
|
||||
{
|
||||
sprintf(buffer, "database: '%s' username: '%s' hostname: '%s'",
|
||||
snprintf(buffer, sizeof(buffer), "database: '%s' username: '%s' hostname: '%s'",
|
||||
share->database, share->username, share->hostname);
|
||||
DBUG_PRINT("info", ("error-code: %d", io->error_code()));
|
||||
my_error(ER_CANT_CREATE_FEDERATED_TABLE, MYF(0), buffer);
|
||||
|
Loading…
x
Reference in New Issue
Block a user