"Ale Raza" <araza@xxxxxxxx> writes: > Breakpoint 3, #####_Recv (fcinfo=0xbfffa3a0) at binary.c:138 > 138 StringInfo src_buf = (StringInfo) > PG_DETOAST_DATUM(PG_GETARG_DATUM(0)); > (gdb) p *src_buf > Cannot access memory at address 0x0 At the point where you've stopped, src_buf hasn't been assigned to yet. regards, tom lane