匹配错误

当我们调用一个传入错误参数的内建函数时，参数不匹配的函数时，匹配错误就会产生。

当遇到匹配错误时,系统的行为可以描述成以下几种情形:

if(called a BIF with bad args)then
    Error = badarg
elseif(cannot and a matching function)then
    Error = badmatch
elseif(no matching case statement)then
    Error = case_clause
    ...
if(within the scope of a “catch”)then
    Value of “catch” = {'EXIT', Error}
else
    broadcast(Error)
    die
endif

其中“broadcast(Error)”可以描述为：

if(Process has Links)then
    send {'EXIT', self(), Reason} signals to all linked
    processes
endif