Re: invalid memory alloc after insert with c trigger function

[Dudás József <dj1999@xxxxxxxxxxx>]

Here is the output from gdb:

#0  errfinish (dummy=0) at elog.c:312
#1  0x0827f378 in elog_finish (elevel=20,
    fmt=0x83586d8 "invalid memory alloc request size %lu") at elog.c:937
#2  0x082983d7 in MemoryContextAlloc (context=0x843a1ac, size=4294967293)
    at mcxt.c:504
#3  0x0825751d in varcharout (fcinfo=0xbf8a1e7c) at varchar.c:447
#4  0x08281ceb in FunctionCall1 (flinfo=0x8460298, arg1=3052138532)
    at fmgr.c:1128
#5  0x0807e88f in printtup (slot=0x843d038, self=0x8405df4) at printtup.c:326
#6  0x0816b14f in ExecutorRun (queryDesc=0x8474698,
    direction=ForwardScanDirection, count=0) at execMain.c:1310
#7  0x0820059b in PortalRunSelect (portal=0x842f1f4,
    forward=<value optimized out>, count=0, dest=0x8405df4) at pquery.c:831
#8  0x08201799 in PortalRun (portal=0x842f1f4, count=2147483647,
    dest=0x8405df4, altdest=0x8405df4, completionTag=0xbf8a22e8 "")
    at pquery.c:684
#9  0x081fd150 in exec_simple_query (
    query_string=0x840593c "SELECT * FROM pgsor;") at postgres.c:939
#10 0x081fe761 in PostgresMain (argc=4, argv=<value optimized out>,
    username=0x83accdc "dj") at postgres.c:3424
#11 0x081d1cb8 in ServerLoop () at postmaster.c:2931
#12 0x081d2aa7 in PostmasterMain (argc=3, argv=0x83a78a8) at postmaster.c:963
#13 0x0818d2f0 in main (argc=3, argv=Cannot access memory at address 0x4
) at main.c:188

Hope it is verbose for you, but don't help me :)

=?ISO-8859-2?Q?Dud=E1s_J=F3zsef?= <dj1999@xxxxxxxxxxx> writes:
  

I know that something doing wrong, but I can't find out what is it.
    

Getting a stack trace from the point of the errfinish call would
probably help narrow it down.  One thing that's not clear is whether
SPI_modifytuple itself is failing (have you checked all the *other*
arguments you're passing it?) or whether it happens later.

			regards, tom lane