Opened 14 years ago

Last modified 7 years ago

#1458 reopened defect

Cyclic default-bindings in functions are still accepted — at Version 12

Reported by: Martin Sjölund Owned by: Martin Sjölund
Priority: high Milestone: Future
Component: Frontend Version:
Keywords: Cc: Martin Sjölund, Per Östlund

Description (last modified by Martin Sjölund)

The check should probably be moved to the instantiation of functions (because we fall back to generation of code). We can check for usage of unbound variables in the same place later on...

function f
  output Real y = y;
end f;

model A
  Real y = f();
end A;
function f
  output Real y = y;
end f;

class A
  Real y = 5.79776549334303e-316;
end A;
Error: Cyclically dependent constants or parameters found in scope : {y}

Change History (12)

comment:1 by Martin Sjölund, 12 years ago

Component: Backend
Description: modified (diff)

comment:2 by Martin Sjölund, 10 years ago

Component: BackendFrontend

comment:3 by Martin Sjölund, 10 years ago

Milestone: 1.9.1

comment:4 by Martin Sjölund, 10 years ago

Milestone: 1.9.11.9.2

This ticket was not closed for 1.9.1, which has now been released. It was batch modified for milestone 1.9.2 (but maybe an empty milestone was more appropriate; feel free to change it).

comment:5 by Martin Sjölund, 10 years ago

Milestone: 1.9.21.9.3

Milestone changed to 1.9.3 since 1.9.2 was released.

comment:6 by Martin Sjölund, 9 years ago

Milestone: 1.9.31.9.4

Moved to new milestone 1.9.4

comment:7 by Martin Sjölund, 9 years ago

Milestone: 1.9.41.9.5

Milestone pushed to 1.9.5

comment:8 by Martin Sjölund, 9 years ago

Milestone: 1.9.51.10.0

Milestone renamed

comment:9 by Martin Sjölund, 8 years ago

Milestone: 1.10.01.11.0

Ticket retargeted after milestone closed

comment:10 by Martin Sjölund, 8 years ago

Milestone: 1.11.01.12.0

Milestone moved to 1.12.0 due to 1.11.0 already being released.

comment:11 by Francesco Casella, 7 years ago

Resolution: invalid
Status: newclosed

It is unclear to me what the problem is here. Function f is not used in class A. Where should the cyclic dependency come from?

comment:12 by Martin Sjölund, 7 years ago

Description: modified (diff)
Resolution: invalid
Status: closedreopened

That's the code from the flat Modelica. The output is now:

function f
  output Real y = y;
end f;

class A
  Real y = f();
end A;
[/home/marsj/tmp/a.mo:1:1-3:6:writable] Error: Cyclically dependent constants or parameters found in scope : {y} (ignore with -d=ignoreCycles).

But translation still continues...

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