PostgreSQL clarification -

i have written function inside postgresql has following code:

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for (i = 0; < 4; i++)  {    datum dat_value = cstringgetdatum(inp->str[0][i]);    values[i] = datumcopy(dat_value,                             stats->attrtype->typbyval,                             stats->attrtype->typlen); } 

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the input strings {algeria,argentina,brazil,canada}. code runs algeria,argentina terminates abruptly brazil. when investigated found inside datumcopy function, statement after memcpy not getting printed. checked if palloc failed (s == null) condition, seems not reason. think memcpy failing. reason why? thanks!

datum datumcopy(datum value, bool typbyval, int typlen) { datum       res;  if (typbyval)     res = value; else {     size        realsize;     char       *s;      if (datumgetpointer(value) == null)         return pointergetdatum(null);      realsize = datumgetsize(value, typbyval, typlen);      s = (char *) palloc(realsize);      printf ("value : %s\n",datumgetpointer(value));     memcpy(s, datumgetpointer(value), realsize);     printf ("not printing \n");     res = pointergetdatum(s); } return res; } 

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edited : ok wierd. when input 1 of {brazil,pakistan,france}, code terminates abruptly. if have other countries (i haven't tried extensively, countries), code runs correctly.

edited 2 : found cause , rectified issue. if passing c strings datumcopy, have pass -2 typlen parameter. had been passing incorrectly.

thanks!

i have found cause , rectified issue.

if passing c strings datumcopy, have pass -2 typlen parameter. had been passing incorrectly.