Re: OFFTOPIC: core dumped with strcpy,atoi,sprintf. - Mailing list pgsql-general

From Tom Lane
Subject Re: OFFTOPIC: core dumped with strcpy,atoi,sprintf.
Date
Msg-id 15950.1347640654@sss.pgh.pa.us
Whole thread Raw
In response to OFFTOPIC: core dumped with strcpy,atoi,sprintf.  ("Ing.Edmundo.Robles.Lopez" <erobles@sensacd.com.mx>)
Responses Re: OFFTOPIC: core dumped with strcpy,atoi,sprintf.
List pgsql-general
"Ing.Edmundo.Robles.Lopez" <erobles@sensacd.com.mx> writes:
> Debugging the program, found that the core is generated  by atoi,
> sprintf and similar functions; because that functions fails when
> received  a null pointer (NULL). But, if  the functions received  an
> empty string ("") the program continues and run succesfully.

> Yes,  I should validate each input pointers. But, its odd that works in
> SCO and not in Linux, and its odder that fails in functions like strcpy,
> atoi, sprintf, etc.

Not really.  Per the POSIX spec, the behavior of those functions is
undefined for NULL input pointers.  Some platforms are forgiving about
it, most are not.

            regards, tom lane


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