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RE: [avr-gcc-list] New GCC warning - how to silence?
From: |
larry barello |
Subject: |
RE: [avr-gcc-list] New GCC warning - how to silence? |
Date: |
Thu, 5 Apr 2007 15:19:59 -0700 |
Ok, this is the most interesting answer and begs another question: Are you
just saying use either signed or unsigned (I typically use uint8_t except
when the signedness counts) or is "char" a distinct type that has defined
behavior across portable systems?
I don't like the -funsigned-char because that is "magic". I rather just
explicitly say what I want.
Anyway, I solved the warnings by casting (or changing the type) of buffers
and pointers from "uint8_t" to "char" as "int8_t" seemed to cause grief as
well.
Cheers!
-----Original Message-----
From: address@hidden
[mailto:address@hidden On Behalf Of
Joerg Wunsch
Sent: Thursday, April 05, 2007 3:02 PM
To: address@hidden
Subject: Re: [avr-gcc-list] New GCC warning - how to silence?
Eric Weddington <address@hidden> wrote:
> GCC 4 seems to be a lot more concerned about the differences between
> "char" and "unsigned char". Are you using the -funsigned-char flag
> in your compiler command?
Regardless of which is the default, just never mix up "char" with
either "unsigned char" (or uint8_t) or "signed char" (int8_t) at all.
A portable application needs to handle all three types as distinct, as
the default signedness of the type "char" is not determined by the
standard.
--
cheers, J"org .-.-. --... ...-- -.. . DL8DTL
http://www.sax.de/~joerg/ NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)
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- [avr-gcc-list] New GCC warning - how to silence?, larry barello, 2007/04/05
- RE: [avr-gcc-list] New GCC warning - how to silence?, Eric Weddington, 2007/04/05
- Re: [avr-gcc-list] New GCC warning - how to silence?, Joerg Wunsch, 2007/04/05
- Re: [avr-gcc-list] New GCC warning - how to silence?, Joerg Wunsch, 2007/04/06
- RE: [avr-gcc-list] New GCC warning - how to silence?, Eric Weddington, 2007/04/06
- Re: [avr-gcc-list] New GCC warning - how to silence?, Joerg Wunsch, 2007/04/06
- RE: [avr-gcc-list] New GCC warning - how to silence?, Eric Weddington, 2007/04/06
- Re: [avr-gcc-list] New GCC warning - how to silence?, Joerg Wunsch, 2007/04/06
- RE: [avr-gcc-list] New GCC warning - how to silence?, larry barello, 2007/04/07
- Re: [avr-gcc-list] New GCC warning - how to silence?, Rolf Magnus, 2007/04/07
- Re: [avr-gcc-list] New GCC warning - how to silence?, Joerg Wunsch, 2007/04/08