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Error E2158 compiling with Delphi XE10 Seattle

Posted on 2016-10-15
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Last Modified: 2016-10-16
I use the function SetLength at several places in one Delphi application, without any compilation errors
Now I add something like this :

procedure MyProc(var M:array of string);
begin
.../...
SetLength(M,0);
.../...
end;

and get E2158 System unit out of date or corrupted : missing @Clr !!!
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Question by:LeTay
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2 Comments
 
LVL 34

Accepted Solution

by:
sarabande earned 500 total points
ID: 41845617
var M:array of string
don't know much about pascal but would guess that the array passed was by reference. if so, it can't be shrinked (to 0 or at all) in case it is allocated on the stack. you may try to pass a dynamic array instead.

Sara
0
 

Author Closing Comment

by:LeTay
ID: 41845693
Indeed, looks to be that
I used a workaround that ... works !
I defined

TRecArray = record
  Elements:array of string;

procedure MyProc (var M:TRecArray);
begin
.../...
  SetLength(M.Elements,0);
.../...
end;

Works !
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