John:
If I understand your code, "v" is a pointer to a so-called null string and C
does not allow it to be a NULL (char * 0). Therefore I would expect
_tmp65803 to be returned as a pointer to the Value (0) associated with the
string "".
It would be a NULL pointer if an error occurred.
I.E. to get an error in the below code try:
JudySLIns((PTF index), (unsigned char*)0, _tmp65802);
Thank you for your interest,
doug
P.S. Pointers to pointers drive me crazy too.
Doug Baskins <[email protected]>
>________________________________
> From: john skaller <[email protected]>
>To: judy <[email protected]>
>Cc: felix google <[email protected]>; felix sf
><[email protected]>
>Sent: Thursday, July 4, 2013 6:39 AM
>Subject: weird bug
>
>
>I must be missing something but I have this code using JudySLIns:
>
> {
>
>printf("Judy Array at address %p = %p\n", PTF index, *PTF index);
> char* _tmp65801 = v ;
>
> JError_t* _tmp65802 = (JError_t*)&_i52588_v52588_err;
> _a12095t_65459** _tmp65803 = (_a12095t_65459**)((void****)&slot);
>
>printf("CALLING INSERT key = %s\n", _tmp65801);
> if (::std::strlen(_tmp65801) >= JUDY_SL_MAXLEN) throw "JudySLIns
>strlen>10000";
> *(Word_t**)_tmp65803=(Word_t*)JudySLIns((PTF index),(unsigned
>char*)_tmp65801,_tmp65802);
>
>printf("INSERT DONE _tmp65803=%p, &slot=%p,slot=%p,*slot=%p, error=%d\n",
>_tmp65803, &slot,slot,*slot,(int)_i52588_v52588_err.je_Errno);
>
> }
>
>and my output is:
>
>Judy Array at address 0x1001033b0 = 0x0
>CALLING INSERT key = isNULL
>INSERT DONE _tmp65803=0x100101120,
>&slot=0x100101120,slot=0x100132450,*slot=0x0, error=0
>
>in other words, JudySLIns returns NULL but there's no error code.
>There's also no reason I can think of for JudySLIns to return NULL
>if given valid arguments: it either finds an existing key and returns the
>data slot address or it creates a new one.
>
>In this case, the JudySLArray is a virgin (NULL).
>
>The code above was generated. With some tweaks to my compiler
>input different C++ code is generated, and that code actually works.
>
>Any thoughts on what the error could possibly be?
>[Apart from the horrible obvious .. corruption someplace else..]
>
>--
>john skaller
>[email protected]
>http://felix-lang.org
>
>
>
>
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