ibm-midrange - 调用传递数组的外部程序时如何使用 LIKE 关键字

Question

我有以下 RPGLE 程序:

dmypgm            pr                  extpgm('MYPGM')
d  myarr                              like(myarr)
d  somevar                            like(somevar)

d myarr           s             64a   dim(100)
d somevar         s             65a

/free
 callp mypgm(myarr: somevar);
 *inlr = *on;
/end-free

当我尝试在 V6R1 机器上编译它时，我收到错误消息:

RNF5343 30      1 Array has too many omitted indexes; specification is ignored.

一些documentation告诉我:

RNF5343

Array has too many omitted indexes; specification is ignored.

30

Cause . . . . . : The number of omitted indexes for the array used as an operand on the right side of an assignment operator is greater than the number of omitted indexes for the array specified as the result of the assignment.

Recovery . . . : Reduce the number of omitted indexes for the operand; or increase the number of omitted indexes for the result. Compile again.

这没什么帮助，因为这是一个程序调用，而不是尝试分配一个值(例如使用 EVAL 语句或其他语句)。

如果我将外部程序调用的声明更改为:

dmypgm            pr                  extpgm('MYPGM')
d  myarr                        64a   dim(100)
d  somevar                            like(somevar)

程序可以正常编译。

那么如何将 LIKE 关键字与数组一起用于外部程序定义？

Answer 1

LIKE 仅继承数据类型、长度、数据类型和 CCSID。 要传递数组，请同时使用 LIKE 和 DIM:

dmypgm            pr                  extpgm('MYPGM')
d  myarr                              like(myarr) dim(%elem(myarr))
d  somevar                            like(somevar)

d myarr           s             64a   dim(100)
d somevar         s             65a

请参阅6.1 Infocenter LIKE() keyword 。