Xcode Console "po" error: expression failed to parse

Question

My Xcode cannot po anything suddenly.

For example:

po param

error: expression failed to parse:
error: Couldn't realize type of self.

Every time I use po to print something in the console, it will show the errors above. This started happening one month ago.

Does it do that in all projects on all breakpoints or only in a specific place in a particular project? If you try `p` or `expr` instead of `po`, does it work? — Vadim Belyaev, May 16 '22 at 11:25
I click right button to select ```print``` and solve this problem... even thought it does not good as using ```po``` — malcopolocei, Jun 13 '22 at 09:23
See my answer to this related question here https://stackoverflow.com/a/72831028/1461050 — davidgyoung, Jul 02 '22 at 15:41
None of these "solutions" work when attempting to print the app's debugDescription (for XCUITest). Dead in the water here. — Mike Collins, Jul 18 '22 at 20:57

score 5 · Answer 1 · answered Jun 02 '22 at 08:43

5

I know this does not fix the problem, but meanwhile you can use v param to achieve the expected result.

https://stackoverflow.com/a/60064468/2347811

answered Jun 02 '22 at 08:43

Javi

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thanks, but still not working, is this caused by updated XCode? – malcopolocei Jun 08 '22 at 03:48
I found a solution, click right button and select "print"... well, it is not good as ```po``` but it works. – malcopolocei Jun 13 '22 at 09:23

score 1 · Answer 2 · answered Mar 20 '23 at 08:00

1

Here is easy solution: Change Debug information Format for Debug to "DWARF" in Build Settings. It should be done for both TARGETS AND PROJECT.

Change it back to "DWARF with DSYM File" when upload application on Appstore.

answered Mar 20 '23 at 08:00

Zulqarnain Mustafa

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score 0 · Answer 3 · answered Mar 23 '23 at 09:02

0

for my case i just changed build configuration to debug build mode .

edit scheme -> Run -> info -> build configuration -> select Debug

answered Mar 23 '23 at 09:02

nawaf

21
1

score -4 · Accepted Answer · answered Sep 07 '22 at 15:48

-4

well, you could click right button and choose "print..." at console.

answered Sep 07 '22 at 15:48

malcopolocei

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Xcode Console "po" error: expression failed to parse

4 Answers4