Internal error 2024011501

Summary

The following code using generics and dynamic arrays fails to compile with Fatal: Internal error 2024011501. (The generic function isn't specialized.)

Steps to reproduce

Compile this:

// test.pas
{$MODE OBJFPC}
uses
   testunit;
begin
end.

// testunit.pas
{$MODE OBJFPC}
unit testunit;

interface

generic procedure Test1<T>();

procedure Test2(Arg: array of Integer);

implementation

generic procedure Test1<T>();
begin
   Test2([T.Foo]);
end;

procedure Test2(Arg: array of Integer);
begin
end;

end.

This gives the error testunit.pas(19,1) Fatal: Internal error 2024011501.

System Information

• Operating system: Linux
• Processor architecture: x86-64
• Compiler version: trunk compiled on 2025/07/03
• Device: Computer