test_override('defcompile', 1) gives lots of false errors

[errael]

Steps to reproduce

Source the given script and get.

Error detected while compiling /home/err/work/bugs/vim/defcompile/t.vim[7]..function <SNR>43_F1:
line    1:
E117: Unknown function: F2

But if the test_override statement is commented out, then the defcompile at the end gets no error. This is more in line with expected usage/behavior.

vim9script

test_override('defcompile', 1)

def F1()
    F2()
enddef

def F2()
enddef

defcompile

Expected behaviour

If, when test_override('defcompile', 1), defcompile is done at the end of the file this would be more in line with how things actually work.

@yegappan I took a look at code, but I couldn't even figure out where end of file happens.

Version of Vim

9.1.474

Environment

linux/gtk3

Logs and stack traces

No response

[chrisbra]

I think what happens, is that test_override('defcompile', 1) causes your function to be compiled immediately when it is defined. So in your case the definition of F2() isn't seen yet, so it errors out. That's why you put the :defcompile at the end :)

[errael]

what happens, is that test_override('defcompile', 1) causes your function to be compiled immediately when it is defined

Right. I was able to find that in the code.

That's why you put the :defcompile at the end :)

Yes. Now if only test_override would do that too.

[chrisbra]

Yes. Now if only test_override would do that too.

In that case, I guess we should make it try to compile whenever it reaches the end of a file. Not sure how easy this would be to be implemented.