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These issues were found by Coverity static analysis tool, for more info
see messages by particular fixes (messages belong to 5.1.61).
Error: BUFFER_SIZE_WARNING:
/builddir/build/BUILD/mysql-5.1.61/sql/sql_prepare.cc:2749: buffer_size_warning: Calling strncpy with a maximum size argument of 512 bytes on destination array "this->stmt->last_error" of size 512 bytes might leave the destination string unterminated.
diff -up mysql-5.5.21/sql/sql_prepare.cc.coverity mysql-5.5.21/sql/sql_prepare.cc
--- mysql-5.5.21/sql/sql_prepare.cc.coverity 2012-03-13 17:24:40.493658626 +0100
+++ mysql-5.5.21/sql/sql_prepare.cc 2012-03-13 17:25:14.574338307 +0100
@@ -2863,7 +2863,7 @@ void mysql_stmt_get_longdata(THD *thd, c
{
stmt->state= Query_arena::STMT_ERROR;
stmt->last_errno= thd->stmt_da->sql_errno();
- strncpy(stmt->last_error, thd->stmt_da->message(), MYSQL_ERRMSG_SIZE);
+ strncpy(stmt->last_error, thd->stmt_da->message(), sizeof(stmt->last_error)-1);
}
thd->stmt_da= save_stmt_da;
thd->warning_info= save_warinig_info;
Error: STRING_OVERFLOW:
/builddir/build/BUILD/mysql-5.1.61/sql/sql_trigger.cc:2194: fixed_size_dest: You might overrun the 512 byte fixed-size string "this->m_parse_error_message" by copying "error_message" without checking the length.
/builddir/build/BUILD/mysql-5.1.61/sql/sql_trigger.cc:2194: parameter_as_source: Note: This defect has an elevated risk because the source argument is a parameter of the current function.
diff -up mysql-5.5.21/sql/sql_trigger.cc.coverity mysql-5.5.21/sql/sql_trigger.cc
--- mysql-5.5.21/sql/sql_trigger.cc.coverity 2012-03-13 17:25:50.781985493 +0100
+++ mysql-5.5.21/sql/sql_trigger.cc 2012-03-13 17:27:04.589225626 +0100
@@ -2260,7 +2260,7 @@ void Table_triggers_list::mark_fields_us
void Table_triggers_list::set_parse_error_message(char *error_message)
{
m_has_unparseable_trigger= true;
- strcpy(m_parse_error_message, error_message);
+ strncpy(m_parse_error_message, error_message, sizeof(m_parse_error_message)-1);
}
Error: STRING_OVERFLOW:
/builddir/build/BUILD/mysql-5.1.61/storage/innodb_plugin/handler/ha_innodb.cc:6544: fixed_size_dest: You might overrun the 512 byte fixed-size string "name2" by copying "name" without checking the length.
/builddir/build/BUILD/mysql-5.1.61/storage/innodb_plugin/handler/ha_innodb.cc:6544: parameter_as_source: Note: This defect has an elevated risk because the source argument is a parameter of the current function.
diff -up mysql-5.5.21/storage/innobase/handler/ha_innodb.cc.coverity mysql-5.5.21/storage/innobase/handler/ha_innodb.cc
--- mysql-5.5.21/storage/innobase/handler/ha_innodb.cc.coverity 2012-03-13 17:28:52.982738150 +0100
+++ mysql-5.5.21/storage/innobase/handler/ha_innodb.cc 2012-03-13 17:29:14.952427553 +0100
@@ -6926,7 +6926,7 @@ ha_innobase::create(
DBUG_RETURN(HA_ERR_TO_BIG_ROW);
}
- strcpy(name2, name);
+ strncpy(name2, name, sizeof(name2)-1);
normalize_table_name(norm_name, name2);
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