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References: <bug-35634-6291@http.gcc.gnu.org/bugzilla/>
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From: Andrew Pinski <pinskia@gmail.com>
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Subject: Re: [Bug target/35634]  New: [avr] result of char promotion comes out of CHAR_MIN/MAX
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Date: Wed, 19 Mar 2008 06:10:00 -0000
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This code is only defined if char is unsigned which it is not on avr.  
(It is unsigned on some targets like powerpc-Linux-gnu.

Sent from my iPhone

On Mar 18, 2008, at 22:42, "dmixm at marine dot febras dot ru" <gcc-bugzilla@gcc.gnu.org 
 > wrote:

> /* The next program is aborted with avr-gcc 4.1.2, 4.2.3, 4.3.0:
>      result of char promotion comes out of CHAR_MIN/MAX.
>   Options: -W -Wall -Os
>   Know to work:
>      3.3.6, 3.4.6 - good code
>      4.0.4 - correct, but not the best
>      4.1.2, 4.2.3, 4.3.0 - without optimization only
> */
>
> #include <limits.h>
>
> void abort (void);
> void exit (int);
>
> void foo (int i)
> {
>    static int n;
>    if (i < CHAR_MIN || i > CHAR_MAX)
>        abort ();
>    if (++n > 1000)
>        exit (0);
> }
>
> int main ()
> {
>    char c;
>    for (c = 0; ; c++) foo (c);
> }
>
>
> -- 
>           Summary: [avr] result of char promotion comes out of  
> CHAR_MIN/MAX
>           Product: gcc
>           Version: 4.3.0
>            Status: UNCONFIRMED
>          Severity: normal
>          Priority: P3
>         Component: target
>        AssignedTo: unassigned at gcc dot gnu dot org
>        ReportedBy: dmixm at marine dot febras dot ru
>
>
> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35634
>