Message5117

I guess i meant critical. This issue was also present in release 2.5.0. 
What it appears to be is the format:

test_str = "for i in range(5):\n   print i\nprint 'Ouch!'\n"

does not end the interactive evaluation. The below however does:
test_str = "for i in range(5):\n   print i\n\nprint 'Ouch!'\n"

note the extra '\n' after the for loop. This is also true for function 
definitions as well and is not limited to for loop termination.

probably could be added as a test string in test_valid of 
test_codeop.py?