Re: Extern/scope issue

[rikki cattermole via Digitalmars-d-learn]

On 03/04/2021 11:01 PM, DLearner wrote:
'Testmain' imports module 'testmod'.
Both are shown below.
I expected 1,1,2,2.
I got 1,0,2,1 - which speaks to scope/extern misunderstanding
Any ideas?
Best regards

Testmain:

int xvar;

TLS variable with D mangling, not a c global.

import testmod;
void main() {
   import std.stdio;

   writeln("Entering: main");
   xvar = 1;
   writeln("xvar=", xvar);
   testsub();
   writeln("xvar=", xvar);

   writeln("Leaving: main");
}

Testmod:

void testsub() {

   extern(D) int xvar;

That is a regular variable.
Setting the calling convention/mangling like that doesn't make any sense 
and shouldn't be allowed in context.

   import std.stdio;

   writeln("Entering: testsub");
   writeln("xvar=", xvar);
   xvar = 2;
   writeln("xvar=", xvar);
   writeln("Leaving: testsub");
}