The file util.c has the following line in the comment at line 1638 before sqlite3AbsInt32():

** Compute the absolute value of a 32-bit signed integer, of possible.  Or

I think "of possible" should be "if possible".

Similarly, the file func.c has the following in the comment at line 1820 before sumStep():

** value.  TOTAL never fails, but SUM might through an exception if

I suspect it should say "SUM might throw an exception".