regression in list directed write

[Tim Prince]

At 08:15 AM 1/10/2005, Paul Thomas wrote:


>>This works for me on i386-*-freebsd.  That error message
>>originates in only 1 place in io/write.c in output_float.
>
>Indeed, I just did a grep on the error message "printf is broken" to find 
>that.
>
>>To call output_float, you need to get pass an if()
>>statement that uses isfinite() and isnan().  Are these
>>functions working correctly on your target.
>
>I had tested that printf and sprintf are correctly yielding NaN and Infinity.
>
>However, isfinite and isnan are indeed broken in gcc-4.0 for both float 
>and double.   isnan works for float in the Cygwin supplied gcc-3.3 but the 
>other combos are broken.
>
>#include <stdio.h>
>#include <math.h>
>int main( void)
>  {
>    float x =0.0, y=0.0;
>    char outc[30];
>    sprintf(outc , "x/y = %+-#31.*e" , 10 , x/y );
>    printf("%s\n" , outc );
>    printf("isfinite=%d  isnan=%d \n" , isfinite( x/y ) , isnan( x/y) );
>    return 0;
>  }

So, is the only acceptable solution to have them supported by newlib?


Tim Prince