The following code compiled on 4.4.x works without problems, but by using gcc
4.5 it produces for -O0 wrong code, and for -O >= 1 correct code but the
strange warning (with -Wall option enabled) 'modf.c:9:1: warning: statement
with no effect.'.
#include <stdio.h>
#include <math.h>
int main( void )
{
double d = 10.5;
double i = 100.0;
modf( d, &i );
printf( "%f %f\n", d, i );
return 0;
}
--
Summary: Wrong code and misleading warning "statement with no
effect"
Product: gcc
Version: 4.5.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: regression
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: ktietz at gcc dot gnu dot org
GCC target triplet: x86_64-*-mingw*
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43356
