Subject: re: implicit array subtype conversion
Date: 27 Jul 90 13:51:08 GMT [thread overview]
Message-ID: <1990Jul27.135108.11518@planck.uucp> (raw)
In my zeal to limit my example and the size of the posting concerning
implict array subtype conversion, I inadvertently changed the nature of my
problem slightly.
I have defined a dynamic length string as follows:
type STRING_RECORD (Len : NATURAL) is
record
S : Standard.STRING(1..Len);
end record;
type STRING is access STRING_RECORD;
Then, I declare some variables:
A : Standard.STRING(7..7);
B : Standard.STRING(1..1);
C : STRING;
The following is accepted by the compiler (Verdix Sun 4 Self, version
6.0.2(g)) because of implicit array subtype conversion:
A := "X";
B := A;
However, the following is not. Why? I don't see the difference in the
assignment of the string because both B and C.S are constrained.
C := new STRING_RECORD'(Len => A'length, S => A);
--
Terry J. Westley
Arvin/Calspan Advanced Technology Center
P.O. Box 400, Buffalo, NY 14225
acsu.buffalo.edu!planck!hercules!westley
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Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
1990-07-27 13:51 [this message]
1990-07-30 18:11 ` implicit array subtype conversion Robert I. Eachus
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