BUG #4281: some types of errors do not log statements

The following bug has been logged online:

Bug reference: 4281
Logged by: thomas
Email address: me(at)alternize(dot)com
PostgreSQL version: 8.3.3
Operating system: Windows 2003
Description: some types of errors do not log statements
Details:

this isn't really a bug but rather a request for an improvement.

i've noticed that in some cases of errornous sql statements, the statement
itself is logged to the pg_log, in other cases it isn't:

logged:

2008-07-05 01:53:02 CEST 3528 486eade5.dc8 10.1.1.71(53082)ERROR: column
"xyz" does not exist at character 294
2008-07-05 01:53:02 CEST 3528 486eade5.dc8 10.1.1.71(53082)STATEMENT:
SELECT xyz FROM test

not logged:

2008-07-05 02:16:15 CEST 6644 486ebab4.19f4 127.0.0.1(1616)ERROR: invalid
byte sequence for encoding "UTF8": 0xc474
2008-07-05 02:16:15 CEST 6644 486ebab4.19f4 127.0.0.1(1616)HINT: This error
can also happen if the byte sequence does not match the encoding expected by
the server, which is controlled by "client_encoding".

it would be usefull to always see the sql statement that provoked the error.
especially in the case of wrong utf byte sequences it can get very difficult
to find the point of failure without more information.

thanks,
thomas