Re: g_error_free() warning on null pointer
- Date: Sat, 15 Aug 2015 22:04:35 -0400 (EDT)
- From: Allin Cottrell <cottrell@xxxxxxx>
- Subject: Re: g_error_free() warning on null pointer
On Sat, 15 Aug 2015, Jasper St. Pierre wrote:
Lots of things in GLib fail when passed a NULL pointer, like g_object_unref.
The idea is that passing a NULL pointer is probably a sign of a bug
somewhere, so you shouldn't do it. [...]
On the one hand, the function is question is specialized, it's not
free(), nor g_free(), and no standard mandates that it should accept
a NULL pointer as a no-op.
On the other hand, if this function in fact accepts a NULL without
error it's perverse that it should make a fuss about it. It seems to
me that by far the most likely case of g_error_free() getting a NULL
argument is a coder expecting NULL -> no-op semantics by analogy
with C's free(). What sort of bug would you have in mind?
@McConville: the standard most relevant to your argument is the ISO
C standard, not POSIX.
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