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bug: catch invalid assignments and throw a better error message #2808
Description
'a' = 1(base) saurabh-kumar@Awadh:~/Projects/System/lpython$ lpython ./examples/example.py
semantic error: Unsupported type in check_is_assign_to_input_param()
--> ./examples/example.py:1:1
|
1 | 'a' = 1
| ^^^
Note: Please report unclear or confusing messages as bugs at
https://github.com/lcompilers/lpython/issues.I think the invalid assignment above should have been caught earlier and reported with a better error message.
Activity
[-]bug: catch invalid assignments and throw a beautiful error message[/-][+]bug: catch invalid assignments and throw a better error message[/+]amritamishra01 commentedon Nov 24, 2025
Hi! I'd like to work on this issue.
I went through the example and reproduced the error. The assignment to a literal ('a' = 1) should indeed be caught earlier in the semantic analysis, and I’d like to improve the error handling to provide a clearer message.
I’ll start by checking the relevant assignment validation logic and propose a fix.
Please let me know if there are any specific guidelines or preferences before I begin.
Thanks!