Thanks for the help. It was what you said. I had to start a new psql session. And yea, i'm pretty sure objdump does not demangle names. It would be a nice feature if they had the demangled name in parens or something, and that'd probably require support from glibc and gcc, no?
-Arthur
On Fri, Feb 1, 2013 at 12:58 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
Arthur Chan <achan@comprehend.com> writes: > I've been having trouble writing my own custom datatype for PG. when I do > my `CREATE FUNCTION` call, it fails with:
> resultsets=# CREATE FUNCTION fuzzytime_in(cstring) > RETURNS fuzzytime > AS 'fuzzytimetype' > LANGUAGE C IMMUTABLE STRICT; > NOTICE: return type fuzzytime is only a shell > ERROR: could not find function "fuzzytime_in" in file > "/usr/lib/postgresql/9.1/lib/fuzzytimetype.so"
> now I checked my shared lib, and surely enough, it's there
> $ objdump -t /usr/lib/postgresql/9.1/lib/fuzzytimetype.so > ... > 00000000000018b0 g F .text 0000000000000070 fuzzytime_in > ...
> So what gives? The code has PG_MODULE_MAGIC, and I'm > calling PG_FUNCTION_INFO_V1(fuzzytime_in);
Huh, looks like it should work. I can think of a couple of gotchas:
(1) If the library is already loaded, CREATE FUNCTION doesn't reload it. Maybe you have an old image of the .so in memory, which doesn't contain the function? Try starting a fresh psql session.
(2) Maybe you compiled the function as C++, so it has a mangled name? This theory requires that objdump automatically de-mangles names, which I don't know for sure one way or the other.
