Error raised when analyzing varargs method call

[FlavienQui]

Prerequisites

• This bug is in SonarDelphi, not SonarQube or my Delphi code.
• This bug has not already been reported.

SonarDelphi version

1.6.0

SonarQube version

No response

Issue description

Running analysis with DelphiLint 1.1.1 in Standalone mode, an error is raised when the code contains a method call with the varargs directive.

Steps to reproduce

Analyze the file with the minimal Delphi code joined to this issue.

Minimal Delphi code exhibiting the issue

unit Unit1;

interface

procedure MyProcedure;

var
  SetValues: procedure(AValues: Integer); cdecl varargs;

implementation

procedure MyProcedure;
var
  LValue: Integer;
begin
  LValue := 1;
  SetValues(LValue, LValue);
end;

end.

[cirras]

Hi @FlavienQui,

The exception is getting raised from the VariableInitialization rule, but the actual problem goes a bit deeper into the analyzer's semantic model. It looks like we don't consistently persist varargs when generating type information for procedurals.

Thanks for reporting this bug, your minimal example was very helpful.