Ludovic Drolez wrote:
> Hi !
>
> I've found a bug in Qemu x86_64 under a sles 64 10: conversion of floats
> to strings fails in some cases. For example, Ganglia (cluster monitoring
> software), shows random values and as well as PHP5 programs.
>
> Here is a simple test program to confirm that you have the same bug as me
> (maybe also under another distribution). Compile this and link with libapr-1:
>
> ======================test.c===============
> #include <stdio.h>
> #include <math.h>
> #include <apr.h>
> #include <apr_strings.h>
>
> void main(void)
> {
> char buf[60];
> double d = M_PI;
>
> snprintf(buf, 60, "%f\n", d);
> printf(buf);
> apr_snprintf(buf, 60, "%f\n", d);
> printf(buf);
>
> }
> ============================================
>
> Under a SLES 10/64 bits, you'll see something like:
> 3.141593
> 3.Ojuç_
>
> I tested with Qemu 0.8.2 and the CVS, but of course, it works on a real
> system (a Dell PE1950).
>
> So it's a QEMU bug. Is it triggered by weird code produced by gcc 4.1.0 ? Or a
> FPU emulation bug ? Any ideas ?
>
A bug in apr, maybe, no ?
Rgds,
--
Michel Loiseleur
