Issue 11720 - Function-local static variables should cause "already defined in another scope" error

[9rnsr]

https://d.puremagic.com/issues/show_bug.cgi?id=11720

[yebblies]

This is not the correct fix. Each static variable should be given a unique name. ie https://d.puremagic.com/issues/show_bug.cgi?id=3031

[9rnsr]

I know the issue, but I think rejecting currently unsupported code is better than silently generating wrong code.

void main()
{
  { void f() {} }
  { void f() {} }  // Error: declaration f is already defined in another scope in main

  { struct S {} }
  { struct S {} }  // Error: declaration S is already defined in another scope in main

  { static int v = 1; }
  { static int v = 1; }  // should be same error
}

[WalterBright]

I agree with @9rnsr in that silently generating bad code is always wrong. We may in the future decide to make this work, but until then it's better to generate an error.