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Re: some unusual errors
- To: "Matthew O. Persico" <mpersico at erols dot com>
- Subject: Re: some unusual errors
- From: Michael Richardson <mcr at solidum dot com>
- Date: Mon, 21 Sep 1998 12:49:36 -0300
- cc: gnu-win32 at cygnus dot com
>>>>> "Matthew" == Matthew O Persico <mpersico@erols.com> writes:
Matthew> Michael Richardson wrote:
>>
>> I get a lot of warnings like this:
>>
>> strtod.c:1239: warning: subscript has type `char'
>>
>> This line of code is actually:
>>
>> for(s = s00; isspace(*s); s++)
>>
>> which confuses me. What, if not "char" should isspace() take???
>>
Matthew> int. In the bad old days (pre-ANSI) ints and chars swapped positions
Matthew> more often than Clinton does, apparently. Try this (UNTESTED!)
Matthew> for(s = s00; isspace((int)*s); s++)
Matthew> You could have found this out a lot faster from any good 'C' book, esp
Matthew> K&R.
Yes, I understand that. So? Promote the char to int. End of problem. I
shouldn't have to write that cast!
I don't get this warning on any other system using GCC. (Linux, NetBSD,
Solaris). So I assume that there is something up with either the macro or the
prototype of isspace() on Cygwin.
:!mcr!: | Solidum Systems Corporation, http://www.solidum.com
Michael Richardson |For a better connected world,where data flows faster<tm>
Personal: <A HREF="http://www.sandelman.ottawa.on.ca/People/Michael_Richardson/Bio.html">mcr@sandelman.ottawa.on.ca</A>. PGP key available.
Corporate: <A HREF="mailto:mcr@solidum.com">mcr@solidum.com</A>.
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