Xref: utzoo comp.os.os9:224 comp.lang.c:13648
Path: utzoo!yunexus!geac!syntron!jtsv16!uunet!auspex!guy
From: guy@auspex.UUCP (Guy Harris)
Newsgroups: comp.os.os9,comp.lang.c
Subject: Re: Bugs in OS9/68K C-Compiler ?
Message-ID: <338@auspex.UUCP>
Date: 28 Oct 88 04:23:02 GMT
Article-I.D.: auspex.338
References: <147@fbihh.UUCP> <636@tuvie>
Reply-To: guy@auspex.UUCP (Guy Harris)
Organization: Auspex Systems, Santa Clara
Lines: 15

>For the 'return 0 != ptr' problem : I don't know why, but 'return ptr != 0'
>works. Apparently the compiler automatically casts integers to pointers
>on comparisons but doesn't cast pointers to integers. I don't know what
>K&R says to this case.

K&R say that both

	0 != ptr

and

	ptr != 0

should cause 0 to be cast to the type of the pointer "ptr".  It should
not cast "ptr" to "int" in *either* case.