[freetds] "DB-lib error, no 20050, Attempt to convert data stopped by syntax error in source field" - FreeTDS trying to convert to SYBMONEY for some reason?
freddy77 at gmail.com
Sun Aug 7 11:00:28 EDT 2016
2016-08-06 18:58 GMT+01:00 Karen Pease <Karen.Pease at isavia.is>:
> That indeed was the problem - thanks a bunch :) I didn't have the sybase package installed, which was confusing, but apparently our app has some of the sybase headers in its include directory; I had to remove them.
> One more piece of weirdness I'm hitting... and it took me a long time to track down:
> int32 count;
> dbcmd (ET_fillas_dbp1, " select count(*) ");
> dbcmd (ET_fillas_dbp1, " from AIRSPACE_BOUND ");
> dbfcmd (ET_fillas_dbp1, " where Airspace_Vol_Name = '%s' ", volname);
> dbsqlexec (ET_fillas_dbp1);
> if (dbresults (ET_fillas_dbp1) != SUCCEED)
> dbbind (ET_fillas_dbp1, 1, INTBIND, (DBINT) 0, &count);
> dbnextrow (ET_fillas_dbp1);
> printf("%d, %X, %lX\n", __LINE__, count, count, count);
> So, obviously, count is just an integer, it should never be negative. For example, if I run that query in in tsql, it returns '4'. But the output in the code is:
> 4 4 7FFF00000004
> ... as if it's doing some sort of weird negative conversion (???). It took a long time to catch because when I was just printing it out with "%d" it looked fine, but it was crashing me in a calloc statement.
I don't know your system but I suppose that sizeof(int) == 4 and
sizeof(long) == 8 and you are doing something bad with printf. INTBIND
is supposed to write a 4 byte integer. Explaining what's going on
requires to understand how does variadic functions work and the
architecture you are using.
I cannot see the calloc call.
How is defined the int32? Usually DBINT is safer.
> Any clue what's going on there? The dump ends:
> dblib.c:2043:dbnextrow() dbresults_state = 2 (_DB_RES_RESULTSET_ROWS)
> token.c:549:tds_process_tokens(0x1aff550, 0x7ffe79928be4, (nil), 0x1508)
> util.c:165:Changed query state from PENDING to READING
> token.c:564:processing result tokens. marker is d1(ROW)
> token.c:1951:tds_process_row(): reading column 0
> data.c:534:tds_get_data: type 56, varint size 0
> data.c:587:tds_get_data(): wire column size is 4
> util.c:165:Changed query state from READING to PENDING
> buffering.h:305:buffer_transfer_bound_data(0x1afeb90 4040 -1 0x1afeb80 0)
> dblib.c:7210:copy_data_to_host_var(56 [SYBINT4] len 4 => 56 [SYBINT4] len 0)
> dblib.c:7252:copy_data_to_host_var() srctype == desttype
> dblib.c:2117:leaving dbnextrow() returning REG_ROW/MORE_ROWS
> - kv, Karen
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