Re: A question regarding C string functions

On Wed, 02 Apr 2025 18:33:17 +0000, Kaz Kylheku wrote:

On 2025-04-02, Lew Pitcher <lew.pitcher@digitalfreehold.ca> wrote:

I cannot find any definitive statement in my copies of the various
C language standards that addresses the behaviour of the C string
functions when given a NULL pointer.

 
Let us start with ISO C 90.
 
  7.1.7 Use of library functions
 
  Each of the following statements applies unless explicitly stated
  otherwise in the detailed descriptions that follow. If an argument to
  a function has an invalid value (such as a value outside the domain of
  the function. or a pointer outside the address space of the program.
  or a null pointer), the behavior is undefined.
  ^^^^^^^^^^^^^^^^^

Thanks, Kaz

I knew that I had seen such a statement in the standards before, but
for the life of me, I couldn't find it today.

That settles my quandry; the code I'm looking at has got to change

[snip]

It gets more verbose and indented, but the null treatment is
consistently there.

Thanks again

--
Lew Pitcher
"In Skills We Trust"